486 Bulletin American Museum of Natural History. [Vol. XXII, 



Forearm (in type) 50, averaging 51 in 9 adults, and ranging from 50-52 

 (only 2 above 51), as against 66 (64-67) in kuhlii insularis. Skull (type), 

 total length, 18.5 ; greatest orbital breadth, 7, as against 10.2 in kuhlii insularis; 

 least postorbital breadth, 5; breadth at outside base of canines, 6.2; upper 

 lateral toothrow (excluding incisor), 6.3 ; length of lower jaw, 9; length of lower 

 lateral toothrow, 7 mm. 



Young darker, more olive brown and less yellow; also smaller, with the 

 forearm ranging from 46-48, with one at 50 mm. Transverse ridge on front 

 base of tragus wanting, as it is also in immature specimens of the kuhlii 

 group. 



Represented by 17 specimens, of which 9 are adult and 8 are immature; 

 13 were collected at Rintoi, July i, and 4 at Rinsui, July 2. The adults range 

 in coloration of the upper parts from cinnamon brown to dark wood brown, 

 according to the amount of yellowish suffusion; underparts yellowish buff, 

 'varying in different specimens from buff to ochraceous buff. The young of the 

 year (smaller and with free epiphyses) darker, mostly with a decided olivaceous 

 shade above and a brownish tinge below. Most of the young specimens are 

 scarcely distinguishable in color of upper parts from the adults of 5. kuhlii 

 insularis, but the adults are much more yellowish. 



There are only two species of Asiatic Scotophili with which the 

 present species needs comparison, 5. wroughtoni Thomas, from 

 Surat, British India, and S. castaneus Horsfield, the three species 

 having practically the same measurements (average length of forearm 

 in all, 50-51 mm.). For 5. wroughtoni the length of the forearm is 

 given as 50 mm. ; Bonhote (P. Z. S., 1900, p. 192), for 5. castaneus, says 

 "the average length of the forearm of the 5 specimens in the [British] 

 Museum is 50.7 mm., the lengths ranging from 49-52 " ; in 9 adults of 

 5. consobrinus the forearm averages 51, ranging from 50-52. Bon- 

 hote (/. c.} says the color of S. castaneus "is of a uniform chestnut all 

 over, showing no tendency to become lighter below" ; while Thomas 

 says S. wroughtoni is "uniform brownish from above without any 

 tinge of yellowish ; the hairs white at their bases and gradually darken- 

 ing to the brownish tips; . . . undersurface very pale fawn, 

 almost white." In neither does the coloration agree with that of 

 5. consobrinus, none of the 17 specimens of which approach chestnut, 

 either above or below ; in several there is a decided suffusion of yellow, 

 especially on the under surface, which is decidedly lighter than the 

 upper surface; the basal portion of the fur is not white, being on the 

 upper surface only a little lighter than the tips, with rather more 

 difference on the ventral surface between the apical and proximal 

 portions. - It seems probable that consobrinus is more closely allied 

 to castaneus than to any other described form, of which it is doubtless 

 the Hainan insular form. . 



