| 单词 | genus Tamias |
| 例句 | Examination of series of bacula of the subgenus Neotamias and the genus Tamias indicates, as in the case of the mallei, that there is slight individual variation and slight variation with age. Genera and Subgenera of Chipmunks Width of the postorbital process at base.—The postorbital process is broader at the base in the subgenus Eutamias and in the genus Tamias than in most species of the subgenus Neotamias. Genera and Subgenera of Chipmunks In E. townsendii, however, this process is relatively as broad as in the subgenus Eutamias and in the genus Tamias. Genera and Subgenera of Chipmunks This difference may be correlated with differences in size, since specimens of the subgenus Eutamias and the genus Tamias are larger than specimens of the subgenus Neotamias. Genera and Subgenera of Chipmunks In specimens of E. t. townsendii of the subgenus Neotamias, however, the degree of constriction of the interorbital region is approximately the same as in the subgenus Eutamias and the genus Tamias. Genera and Subgenera of Chipmunks In Eutamias townsendii, however, the infraorbital foramen is rounded as much as in the subgenus Eutamias and in the genus Tamias. Genera and Subgenera of Chipmunks Shape of the pinna.—The pinna is narrower and more pointed in the subgenus Neotamias than in the subgenus Eutamias and the genus Tamias. Genera and Subgenera of Chipmunks The crest is least developed in the subgenus Neotamias and most developed in the genus Tamias. Genera and Subgenera of Chipmunks Critical examination of new and old evidence reveals, nevertheless, that the subgenera Eutamias and Neotamias of the genus Eutamias are more closely related to one another than either is to the genus Tamias. Genera and Subgenera of Chipmunks |
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