154 (it-lurid 



GKNKRAL NOTKS. 



The Vespertilio concinnus of Harrison Allen, 



Through the kindness of Mr. Witmer Stone I have recently had the 

 opportunity to examine the bats on which Harrison Allen based the 

 name I >*//////<; <-<nn'itinu* (Proc. Acad. Nat. Sci. Philadelphia, 18<>(>, p. 

 280). The specimens, two in number, are in alcohol, and labeled "San 

 Salvador, Dr. J. Leidy." Though much faded in color they are clearly 

 referable to Myotitt nigricanx (Maximilian), or at least to that form of the 

 species occuring in Columbia and southern Mexico. The name <-<irin- 

 nuif is therefore a synonym of nigricann unless the bat to which it was 

 applied should eventually prove to be distinct from the tnie nigricans of 

 Brazil, specimens of which I have not seen. In that case it would be 

 tenable for the northern animal. Gerrit N. Miller. Jr. 



The generic name Evotomys not invalidated by Anaptogonia. 



In a posthumous paper on the fauna of the Port Kennedy b "me iissure 

 (Journ. Acad, Nat. Sci., Philadelphia, 3d Ser. XI, p. 201) Cope substi 

 tuted the name Anaptogonia Cope 1871 based on a fossil Microtine rodent 

 for Evotomyx Coues 1874 originally applied to the Redbacked Mice. The 

 change was made on account of the supposed generic identity of the 

 fossil and living animals. Through the courtesy of Mr. Witmer Slone 

 I have recently had an opportunity to examine two specimens of Anap 

 togonia from the collection of the Philadelphia Academy of Sciences, 

 This material shows that Anaptogonia, although provided with rooted 

 molars, is in no way closely related to Erotoiny*. The teeth are as large 

 as in Microtnx (Xcojiber) alleni, and the enamel pattern is characteri/.ed by 

 acute angularity. The genus thus resembles the 'M/vvVv/W itifrrntnlitrx" 

 of Xewtori and the Doltnnyn of Xehring. Therefore the name Kr<>1<>iui/x 

 as applied to the Redbacked Mice is in no way invalidated by the pre 

 vious publication of Anaptogonia. f-Gerrit X. \fillrr. Jr. 



Note on Micronycteris brachyotis (Dobson) and M. microtis Miller. 



In describing a bat from Greytown, Nicaragua, under the name M'i- 

 cronycterift microti* (Proc. Acad. Nat. Sci. Philadelphia, 181)8, p. JJ28), I 

 overlooked the fact that Dobson had previously (Proc. Zool. Sue London, 

 1878, p. 880) described a member of the same genus from Cayenne, 

 French Guiana, as Schfuostoma Iradiyoir, a name not cited in Ti-oues- 

 sart's 'Catalogus.' The two animals are evidently much more distinct 

 from each other than the similarity of their specific names would at 

 first suggest. Aficronycteris l>r<i<-/it/<>tix is, with the exception of J/, 

 beknii, one of the largest species of the genus (forearm 40 mm.), while' 

 M. microtix is among the smallest (forearm HI). In M. hrm-htinti* the- 



