Vol. XXIV, pp. 161-162 June 16, 1911 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW BAT FROM THE CAROLINE ISLANDS. 



BY GERRIT 8. MILLER, JR. 

 [Published by permission of the .Secretary of the Smithsonian Institution.] 



Two bats of the genus Emballonura from the Caroline Islands 

 represent a species distinct from any hitherto described. 



Emballonura sulcata sp. now 



Type. — Adult (skin and skull), No. 151,568, U. S. National Museum. 

 Collected on Uola Island, Truk group, Caroline Islands, February 16, 

 1900, by H. F. Moore (U. S. Bureau of Fisheries). 



Description. — Externally like Emballonura semicaudata from Samoa 

 except that the size is appreciably greater (forearm 48.5 instead of 45, 

 tibia 19 instead of i'7) ; general color prouts brown, slightly washed with 

 drab below; skull decidedly larger than that of E. semicaudata (greatest 

 length 17-17.4 instead of 14.4-15, but not peculiar in general form or in 

 proportion of parts, except that anterior palatine emargination is 

 somewhat deeper and mesopterygoid space wider; dorsal surface of ros- 

 trum with conspicuous median longitudinal sulcus nearly 1 mm. wide 

 extending from nares to front of sagittal crest and completely separating 

 the inflated lateral areas. In E. semicaudata the inflated areas are 

 broadly in contact along median line, so that longitudinal groove is nearly 

 effaced. Teeth larger than those of the related species but with no 

 appreciable peculiarities of form. 



Measurements. — The two specimens give the following measurements, 

 those of the type standing first: tail, 12 (14); tibia, 19.2 (19): foot, 8.2 

 (8.2); forearm, 48.4 (48.6); thumb, 8.2(8.6); third finger, 78(77); fifth 

 finger, 52 (53) ; greatest length of skull, 17.0 ( 17.4) ; condylobasal length, 

 15.2 ( — ); zygomatic breadth, 10.0 (10.0); lachrymal breadth, 7.0 (7.0); 

 postorbital constriction, 3.4 (3.6); breadth of braincase, 8.0 (8.0); man- 

 dible, 12.2 (12.2); maxillary toothrow (exclusive of incisors, 6.6 (6.8). 



Remarks. — In size this species lies midway between Emballonura semi- 

 caudata and the recently described E. fura.c Thomas, of New Guinea. 

 Its cranial characters are, however, strictly of the normal type. 



2(i— Proc. Biol. Soc. Wash., Vol. XXIV, 1911. (161) 



