250 Mr. K. i\ndersen on the Bats 



here under consideration : — Tlie horseshoe is very narrow 

 (9 mm., as against 10-5-12-4 in the series examined by me) ; 

 the tail extremely short (about 21-23 mm., as against 

 29-36) ; also in the letterpress the tail is stated to be only 

 "de la longueur du tibia," whereas in all the individuals I 

 have seen it is from I to ^ longer than the tibia. On the 

 other hand, the length of tlie forearm of the type {" 1 ponce 

 10 lignes"= about 50 mm.) and of the metacarpals, pha- 

 langes, and tibia (on the figure) are quite as in several 

 Bornean specimens. Also it should be remembered that the 

 type is a mounted specimen and, according to Jentink *, only 

 " a-peu-pres adulte " ; the differences pointed out above are 

 of such kind that they may perhaps be due to shrinkage. 

 At all events, in the absence of more conclusive evidence, I 

 think it advisable to retain the name trifoliatus for the 

 species described above. If not identically the same as 

 the Bornean and Malaccan bat, the Java form is probably 

 extremely closely related t. 



4. Rhrnolophus solitarhis, sp, n. 



Diagnosis. — Allied to Rh. trifoliatus, but slightly smaller, 

 with very short tail and tibia. Forearm 46 5 mm. 



Skull. — Smaller than in trifoliatus, but proportionately 

 broader (compare maxillary, zygomatic, mastoid breadth, 

 and breadth of brain- case with the measurements of the 

 trifoliatus skulls, p. 257). 



Dentition (one skull). — p-^ completely ivanting, without any 

 trace of the alveoli (teeth but very slightly worn) ; p.2 andjy^ 

 in contact. This is the only instance, -v^itliin the present 

 group,of a complete obliteration of the middle lower premolar; 

 the aberration from the general rule % is rather surprising, 

 and I must leave it open to question if it is, really, a con- 

 stant (or almost constant) peculiarity of the present species. 



* Jentink, " Cat. sjst. Mamm.," Mus. d'Hist. nat. Pars-Bas, xii. (1888) 

 p. IGO. 



t The following statement.s in the original description of Rh. trifoliatus 

 are, evidently, accidental errors only : — " Deux grosses vermes triaugu- 

 laires a la uiachoh-e superieure " ; must be " inferieure." " Dans I'adulte 

 point d'incisives supeiieures " ; they must have been overlooked. " Point 

 de petite dent auomale eutre la canine et la premiere niolaire de la machoire 

 sup^iieure " ; it is extremely improbable that p-, which is present in all 

 species of this group and always situated in the tooth-row, should be 

 wanting in the type o^ trifoliatus. 



X As ?igeneraiv\i\e, in the genus, the lower ^73 does not completely dis- 

 appear until the dentition Iims arrived at the stage that the upper p^ is 

 external, and even then it is still very often present. In all species of the 

 present group ir is quite in tlie tooth row. 



