2012, ISBN: 9781154368062

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustra… More...

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1900 Excerpt: ... Microtus terrtenocw (Bangs). Codroy, Newfoundland. ietramerus (Rhoads). Beacon Hill Park, Victoria, British Columbia. townsendi (Bachman). On or near Wappatoo (Sauvie) Islaud, Willamette River, Oregon. umbrosus Merriam. Mount Zempoaltepec, Oaxaca, Mexico, 8,200 feet. nnalascensis Merriam. Unalaska Island, Alaska. vallieola Bailey. Lone Pine, Inyo County, California. yakutatensis Merriam. Yakutat Bay, Alaska. xanthognathus (Leach). Hudson Bay.. Subgenus MICROTUS Schrank. Type.--Microtus terrestris Schrank --Mus arvalis Pallas). Microtus Schrank, Fauna Boica, I, lste Abth., 72, 1798. Microtus Miller, N. Am. Fauna No. 12, 63, July 23, 189(i (subgenus). Geographic distribution (in Xortli America).--From the Arctic Ocean southward to southern Mexico, and across the continent, mainly in Boreal, Transition, and Upper Austral zones. Subgeneric characters.--Plantar tubercles 6; lateral glands on hips in adult males;1 mamrnii; normally 8, 4 inguinal and 4 pectoral;2 ears usually overtopping fur; ml normally with 5 closed triangles;3 m3 with 3 transverse loops and no triangles; m2 with 4 closed sections, aud in most eastern species an additional posterior inner loop; m3 with 3 closed triangles (except in chrotorrhinus and abbreviatus groups). GROUPS IN THE SUBGENUS MICROTUS. The subgenus Microtus is readily divided into 10 fairly well-marked groups of slightly superspecific rank that may be conveniently designated by the name of their best-known or most characteristic species. These groups are not of great importance or of equal rank, but for showing the relationship of species and for convenience in arrangement they serve a useful purpose. 1. Pennsylvanicus Group, characterized by a posterior fifth loop to middle upper molar, includes pennsylvanicus, nigrans, acadicu... Weight:0.19 lbs, General Books LLC, 2/7/2012 0:00:00<

2012, ISBN: 9781154368062

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustra… More...

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1900 Excerpt: ... Microtus terrtenocw (Bangs). Codroy, Newfoundland. ietramerus (Rhoads). Beacon Hill Park, Victoria, British Columbia. townsendi (Bachman). On or near Wappatoo (Sauvie) Islaud, Willamette River, Oregon. umbrosus Merriam. Mount Zempoaltepec, Oaxaca, Mexico, 8,200 feet. nnalascensis Merriam. Unalaska Island, Alaska. vallieola Bailey. Lone Pine, Inyo County, California. yakutatensis Merriam. Yakutat Bay, Alaska. xanthognathus (Leach). Hudson Bay.. Subgenus MICROTUS Schrank. Type.--Microtus terrestris Schrank --Mus arvalis Pallas). Microtus Schrank, Fauna Boica, I, lste Abth., 72, 1798. Microtus Miller, N. Am. Fauna No. 12, 63, July 23, 189(i (subgenus). Geographic distribution (in Xortli America).--From the Arctic Ocean southward to southern Mexico, and across the continent, mainly in Boreal, Transition, and Upper Austral zones. Subgeneric characters.--Plantar tubercles 6; lateral glands on hips in adult males;1 mamrnii; normally 8, 4 inguinal and 4 pectoral;2 ears usually overtopping fur; ml normally with 5 closed triangles;3 m3 with 3 transverse loops and no triangles; m2 with 4 closed sections, aud in most eastern species an additional posterior inner loop; m3 with 3 closed triangles (except in chrotorrhinus and abbreviatus groups). GROUPS IN THE SUBGENUS MICROTUS. The subgenus Microtus is readily divided into 10 fairly well-marked groups of slightly superspecific rank that may be conveniently designated by the name of their best-known or most characteristic species. These groups are not of great importance or of equal rank, but for showing the relationship of species and for convenience in arrangement they serve a useful purpose. 1. Pennsylvanicus Group, characterized by a posterior fifth loop to middle upper molar, includes pennsylvanicus, nigrans, acadicu... Weight:0.19 lbs, General Books LLC, 2/7/2012 0:00:00<