. Descriptions of twenty-six new mammals from Alaska and British North America [microform]. Mammals; Mammifères. ! MERRIAM Characters.âExternal characters unknown. Cranial characters.âSkull large; nasals long and slender; pos- terior part of mandible large. Compared with typical americanus from Ungava, Hudson Strait, the skull of dalli is very much larger (basal length 65 mm. or more instead of 61 or less) : rostrum, nasals, and incisive vacuity decidedly longer; jugal longer and somewhat broader (vertically) ; mandible very much larger and more expanded posteriorly; molariform teeth larger.
. Descriptions of twenty-six new mammals from Alaska and British North America [microform]. Mammals; Mammifères. ! MERRIAM Characters.âExternal characters unknown. Cranial characters.âSkull large; nasals long and slender; pos- terior part of mandible large. Compared with typical americanus from Ungava, Hudson Strait, the skull of dalli is very much larger (basal length 65 mm. or more instead of 61 or less) : rostrum, nasals, and incisive vacuity decidedly longer; jugal longer and somewhat broader (vertically) ; mandible very much larger and more expanded posteriorly; molariform teeth larger. Remarks.âSuperficially the skull of dalli resembles that of sub- species virginianus from Ossipee, New Hampshire, much more closely than typical americanus; the agreement in size is better and both have rather long, slender nasals. But dalli has a much broader braincase, longer and heavier zygomata, broader jugals, and differs in other particulars. Compared with its geographical neighbor, L. macfarlani from Fort Anderson, it may be distinguished at a glance by its slender nasals and rostrum, longer zygomata, and larger mandible. Cranial measurements.âType skull: Basal length 65 ; zygo- matic breadth anteriorly ; at middle 38; postpalatal length 3,^.5 ; frontal breadth across middle of postorbital processes 21 ; breadth of nasals posteriorly 15; anteriorly 11. LEPUS AMERICANUS MACFARLANI subsp. nov. MacFarlane Varying Hare. Type (skull) from Fort Anderson, north of Great Bear Lake, Arctic America. No. 14467 U. S. National Museum. R. MacFarlane. Characters.âExternal characters unknown. Cranial characters.âSkull similar to that of typical americanus from Hudson Strait but very much larger and heavier; nasals very broad (anteriorly as well as posteriorly); braincase less flattened; supraoccipital shield narrower and tapering posteriorly: mandible, molariform teeth, and lower incisors decidedly larger. Compared with dalli from Nulato River the nasals are very much broad
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Keywords: ., bookauthorme, bookcentury1900, bookdecade1900, booksubjectmammals
