772 



SrCONTCTEEIS. 



rule separated, but sometimes (at least in some males of the larger 

 forms; see fig. 73) united into a low sagittal crest ; mandible as in 

 ilacroglossits, but symphysis (though of the same relative length) 

 a little less horizontal, more obliquely ascending, and with scarcely 

 any trace of a longitudinal keel along its anterior inferior surface. 



Fig. 73. — Sycoiiycteris crassa major, cJ, type of subspecies, 

 f (linear), outline of dorsal aspect of skull \. 



Dentition (fig. 73). — Dental formula in two species (>S^. C7-assa 

 and australis) as in Macror/hssus, in the third {S. naias) differing 

 only by the suppression of the small posterior molar above and 

 below : ^^J^cp'p-p-mMm-) ^ 3 ^ 34 „, 30. 

 ii h c Pi P3 P4 ^1 "2 (m.) 



Upper incisors proclivous, remarkably large (for the subfamily), 

 Darrowly spaced, almost equidistant, subequal in size, crown well 

 differentiated, narrowly chisel-shaped ; i'-i' parallel or (in many 

 individuals) more or less conspicuously converging inferiorly. 



