■246 M>.U>^r—Two X<sic Tropical Old World Bats. 



Cranial nieasurementsof type: greatest length, 15 (10. G);* basal length, 

 i:;.4(14.8); basilar length, 12.8 (1.'].4); zygomatic breadth, 9.2 (10); inter-, 

 orbital constriction, 3 (3.6); greatest breadth of braincase above roots of 

 zygomata, 8(8.4): lachrymal breadth, 5 (0); mandible, 10(11); maxillary 

 loothrow (exclusive of incisors), 5.6(0.(5); mandibular toothrow (exclu- 

 sive of incisors), 6 (6.8). 



Specimens exandned. — Two, both from Aldabra Island. 



Nyctinomus jobensis sp. nov. 



Ti/pe. — Adult male (skin and skull), No. i^JH United States National 

 Museum. Collected at Ansus, Island of Jobie, Northwestern New 

 Guinea, by Dr. O. Beccari. 



Characters. — Similar to the Indian Nyctimnuus plicatus (Buchannan) as 

 described by Dobson and Blanford, but smaller and ear Avith much 

 broader antitragus. 



Earx. — The ear exactly resembles Blanford's figure (Fauna British 

 India, Mammalia, p. 3.>1, December, 1891) except that the antitragus is 

 much broader, its width above nearly equal to height at middle instead 

 of about half this height. The anterior border of the antitragus is very 

 slightly convex instead of distinctly concave as figured. 



Wings, membranes and other external features.- — Externally the animal 

 clo.sely agrees with the descriptions of Nyctinomus plicatus in all respects 

 except the one just jxiinted out. 



Skull and teeth. — The skull is rather robust in form, with high brain- 

 case and cylindric-hourglass shaped interorbital region. The general 

 appearance is very ditferent from the broad flat skull of Nyctinomus 

 (I'f/yptiacus, and strongly resembles some of the species of Promops. 

 Lachrymal processes small but very prominent. Anterior palatine vacu- 

 ity narrow. Teeth as in N. wgyptiacus except that the upper incisors 

 are nearer together, the lower premolars are larger, and the upper molars 

 ave larger, the first and second Avith much less distinct hypocone. 



Measurements. — External measurements of type: total length, 98: head 

 and body, 01; tail, 37: tibia, 15; foot, 10.6 (10); forearm, 45; first digit, 

 7; second digit, 45; third digit, 90; fourth digit, 70; fifth digit, 42; ear 

 from meatus, 20; ear from crown, 15; width of ear, 20. 



Cranial measurements of type: greatest length, 19: basal length, 16.6; 

 basilar length, 15; zygomatic breadth, 11; interorbitjil constriction, 4; 

 greatest breadth of braincase above roots of zygomata, 9.4; lachrymal 

 breadth, 7; mandible, 13.4; maxillary toothrow (exclusive of incisors), 7; 

 mandibular toothrow (exclusive of incisors). 7.6. 



Specimens examined. — Six, all from the type locality. 



liemarlcs. — While there can be no doubt that tliis bat is distinct from 

 Nyctinomus pUcatus, originally described from Pattahaut, Bengal, I am 

 forced to rely on the published accounts of the latter. Both Dobson and 

 Blanford give the length of forearm in N. plicatus as 50 mm. (1.95 in.), 

 while in the six N. jobensis it ranges from 44 mm. to 46 mm. 



*Measurements in parenthesis are those of an adult male Nyctinomus 

 ptimilus from Massowa, Red Sea (No. f sf it)- 



