MYOTIS. PIZONYX. EPTESICUS. 157 



Geogr. Distr. Brandon, Vermont, and Plummers Island, Maryland. 



Genl. Char. Like M. lucifugus, but forearm shorter and muzzle 

 black. Skull small, flattened. 



Color. Upperparts dark chestnut-brown, tinged with golden; 

 underparts dull grayish brown; muzzle and sides of head blackish. 

 Ex type in United States National Museum. 



Measurements. Total length, 82; tail, 39; hind foot, 8; forearm, 

 30.5; extent of wing, 225. Skull: Basal length, 10.4; width of brain- 

 case, 6.8; zygomatic width, 8.2; intertemporal width, 3.6; length of 

 upper molar series, 4; length of mandible, 9.3; length of lower molar 

 series, 4.3. Ex type in United States National Museum. 



My otis yumanensis (H. Allen). 



Vespertilio yumanensis H. Allen, Mon. N. Am. Bats, 1864, p. 58; 

 Elliot, Check-List Mamm. N. Am. Con. and West Indies, 

 F. C. M. Pub. VI, 1905, p. 475. 



Vespertilio obscurus H. Allen, Proc. Acad. N. S. Phila., 1866, p. 231. 



Type locality. Fort Yuma, San Diego County, California. 



In North American Fauna, No. 13, 1897, p. 69 Mr. G. S. Miller 

 Jr., assigned Vespertilio obscurus H. Allen to the synonymy of My otis 

 californicus Aud. and Bach., and it has remained there ever since. 

 The specimen was in alcohol and lately by the removal of the skull, 

 Mr. E. A. Goldman (Proc. Biol. Soc. Wash., XXVII, 1914, p. 102) 

 states that on comparison with the skull of M 1 . yumanensis they prove 

 to be specifically identical and therefore in future the position of V. 

 obscurus H. Allen, will be given as above. 



Genus Pizonyx. 



Pizonyx Miller, Proc. Biol. Soc. Wash., XIX, 1906, p. 85. 



A genus created for the single species Myotis vivesi Menegaux. 

 No. 1148, Check-List. 



Characters. "Like Myotis but with foot (claws included) as long 

 as tibia, the toss and claws so greatly compressed that width of claw 

 is only about one-eighth the height at base ; wing with large glandular 

 mass near middle of forearm." 



Type. Myotis vivesi Menegaux, the only known species. 



Genus. Eptesicus. 



Eptesicus fuscus pallidus Young. 



Eptesicus pallidus Young, Proc. Acad. Nat. Sci. Phila., 1908, p. 408. 

 Type locality. Boulder, Boulder County, Colorado. 



