MUKIDAE— 8I0M0D0NTES— UK8PKUOMY8 LEUCOPUS. 



7 J. 



Taui.rXIV. — Ati^aauremcntnof about fi/ly {atidlint o/other)»ptcimenKpurporting toheUKfirFAtoyi\'»**GAyinKt.l" 

 from tynnhimjtoH atul Oregon Territorim and California — CiuitiuiiL'd. 



* Thrae npecllncna of Dr. Vollum'a bear out tlio romnrka madu under Dr. Kennerly* 'a. One of them ia referable to " boylii "t 

 tbe real are apparently " ganibelU ". 



The foregoing tnble is to be compared with the following items in the 

 original diagnosis of "gambeli" : — " Very similar to It. leticopus in size and pro- 

 portions." This is true, even without the qualification. "Feet perhaps shorter." 

 This is not so; the feet arc wholly within the range of variation of eastern leuco- 

 pus, and the average of the foregoing table is within an inappreciable fraction 

 (0.01 or 0.02) of the eastern average. *' Ears larger." The largest ear in tiie 

 series is not over the length of a large percentage of tlie eastern series ; all the 

 cars are within the eastern limits of variation, and tiie average ear is within an 

 inappreciable fraction (0.02 or 0.03) of the eastern average. " Tail generally 

 less than the head and body, sometimes a wry little longer." This expression is 

 precisely diagnostic of typical leucopus. ^^ Above yellowish-hroxcn, m..^h mixed 

 with dusky, hut without a distinct broad wash of darker on the Itack" Most of" 

 the specimens really are paler and more nnitltrm on the liack than in average 



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