114 BULLETIN J3, UNITED STATES NATIONAL MUSEUM. 



But it may be said that the Oaliforuiau specimens do not as a rule, 



differ from the Eastern ones. I have „,any examples m good conrt^ou 



from Mr. H. A.Ward's collection, and find tliem ni no way atypical. 

 t"; immature examples are often ,nore white at the t,ps ban are 



the adults, and in one specin.eu from Williamstown, Mass. U. b. JN. 



51 CisW), is almost an albino. Other things remamn,g the san.e 



tLnresence of the long, whitish tips to the hair prepare the student 



the "that the sp'edmen is not luUy grown. The varymg degrees 



n which the pale shades of the tips of the hair are met in adults depend 



m™^ the extent to which the colors of the young an.nn.l are retan>ed 



^Uthough pertaining to forms beyond the limits prescribed m t lis 

 essay the following notes may be of interest. Mr. J. A. Allen (Bnll. 

 im M„ " Nat. Hist. Ill, No. l«i), IStlO). describes a speo.men Irom 

 »";««, which is one-third the size of the .1 . /«.«« of the United S ates, 

 and has delicate membranes and c-^-id is siimta m col . i - 



In Xo. 



nnrl hiis delicate memDraiies a-uu utiio .ii^v.. x^ ^^ - , ., , 



8185 U s1r M., from Cuba, the colors are of an almost golden brown 

 'above the basal darker colors. In all other resperts the specmei^.s 

 like those from which the general description is drawn up. in .No. 

 13215, dult, from Mirador, Mexico, the shades of basal brown on the 

 dorsu'm are ;f a very dark brown, while the tips are 7™ 1;'- ^ ^.^^ 

 the venter of chest and abdomen the ha,r is ,,i lonr obscurely d a. en 

 ti-ited shades of dark brown and gray, the tips being gray. The ha, 

 ;^ the neck is of two shades only, the basal two-tbirds being light 

 hinwii imd tlie tips beiu^- conspicuou.sly Avlute gray. 



n f "h ^ecincns collected in Philadelphia a sparse growth of 

 hair wis found on the ventral surface of the endopatagium, extending 

 nlono- the arm and tbrearm to uear the wrist. 



l":,, '«,«r-A small, oblique band is found at the muscle mass near 

 nrSe dof the ftf h metacarpal bone on the mesopatagnim, and 

 one o he ourth interspace. The intercostal lines five rn numbe . 

 The ™^t.ligital line, as a lule, appears as one of two terminal branches, 

 which attorn a ..mrnou trunk in the angle formed by the approxi- 

 ;', on M- the, fourth and iiftli metacarpal bones. The Inie ma^ in some 

 instances, approach the fourth metacarpal an,l "' «""^"^''J?" ' " ™ 

 lue arrangement resembles that of Vc.pcm,o carolmam.. ^'OPI^'I^^ 

 ifal neive shows the line from the mu.scle mass scarcely elevated. The 

 '^^^Sphalanx of the thu-d linger slender, .id e.-l^^ --thirds the 

 length of the second. That of the fourth digit is L"l^- P'- 



The iitth Phalanx is minute, a conspicuous accessory cart age lies 

 soniad to ittd projects slightly beyond *>.« f-^^-; , ^.^Id 

 ™t„..ium A rounded callosity is seen at the ball of the tliumo anu 

 ^Ut of ankle. The tibial line does not reach the free margin 

 of the endopatagium as it does in Vespertdw. 



In the vouiK' and depilated adults a raised skin fold lies on the sicic 

 of f^ie t k ,1 line with the prebrachinm. It is defined by the occipiU. 

 pollieal muscle. The occipito-pollical receives no accession from the 



