THE FAMILIES AND GENEKA OF BATS. 113 



Remarks. — This genus is well differentiated from Hipposideros, 

 especially by the nearly equal height of rostrum and braincase and 

 the conspicuous knife-like development of the sagittal crest in the 

 interorbital region (fig. 21 A). The dentition is more modified than 

 that of Hipposideros, as shown by the absence of the small upper 

 premolar, the more reduced condition of the third tipper molar, and 

 the very peculiar position of the secondary cusp of the upper canine. 

 On the other hand, the persistence, even in very old individuals, 

 of the distinctness of the fused elements of the toes is evidently a 

 remnant of more primitive conditions. 



In cranial and dental characters the genera Hipposideros and 

 Asellia show a curious parallelism to Nycti nonius and Molossvs. In 

 both Hipposideros and Xyctinoinus the sagittal crest is low, a small 

 premolar is present, and the third molar has five cusps and three 

 commissures, while in Asellia and Molossus, simultaneously with the 

 development of a high sagittal crest in interorbital region, the small 

 premolar has disappeared and the third molar has lost its third com- 

 missure and fifth cusp. 



Genus ANTHOPS Thomas. 



1888. Anthops Thomas, Aim. and Mag. Xat. Hist, tith ser., I, p. 156, Feb- 

 ruary, 1888. 



Type-species. — Anthops ornatus Thomas. 



Geographic distribution . — Solomon Islands. 



Number of forms. — One, the type species. 



Characters. — Similar to Hipposideros, but with tail reduced to less 

 than half length of femur ; caudal vertebrae, 4. Upper canine with 

 rather large, blunt cusp at posterior base of shaft. Small upper 

 premolar (pm 3 ) well developed, forced partly outward from the 

 toothrow. Posterior upper molar as in maximum condition in Hip- 

 posideros. Cochleae larger than usual in Hipposideros, their diame- 

 ter more than twice width of basioccipital between them. Lumbar 

 vertebras fused as in Asellia. 



Species examined. — Anthops ornatus Thomas. 



Remarks. — Though closely related to Hipposideros in cranial and 

 dental characters, this genus is at once distinguishable by the greatly 

 reduced tail. 



Genus CCELOPS Blyth. 



1848. Ccelops Blyth, Journ. Asiat. Soc. Bengal, XVII, Pt. 1, p. 251. 



1878. Cvelops Teouessart, Revue et Magasin de Zoologie, 3° ser., VI, p. 223. 



1878. Galops Dobson, Oatal. Chiropt. Brit. Mus., p. 152. 



Type-species. — Codops frithii Blyth. 



Geographic distribution. — Known only from Bengal and Java, 

 25733— No. 57—07 m 8 



