476 



Bulletin American Museum of Natural History. [Vol. XXXVII, 



Judging from the description, Nyctinomus thersites Thomas greatly 

 resembles the present species but whether they are identical cannot be 

 satisfactorily determined without direct comparison of the types. The 

 description of thersites makes no direct mention of the coloration of the 

 underparts, which in occipitalis are very unlike the upperparts, the colora- 

 tion of thersites being described as "Colour brownish chestnut, glandular 

 hairs back of ears black." Other features mentioned point strongly to a 

 form greatly resembling occipitalis. In thersites the premaxillae are thus 

 described: "Premaxillse separated, but opening between them small," 

 for which reason the species has been regarded as a Nyctinomus. In six 

 skulls of occipitalis the premaxillse are fully ossified in four of them and in 

 the other two (one of them the type and the most mature specimen) there 

 is a slight opening behind and between the incisors. In a skull of A. farad- 

 jius (the only one available for examination) the premaxillse are fully ossified. 

 In five adult skulls of the much smaller A. nanulus there is a very small 

 opening at the inner base of the incisors in all, but in all other characters, 

 external and cranial, including color pattern and femoral bristles, nanulus 

 is obviously only the little brother of the three larger forms here referred 

 to Allomops. 



67. Mops (Allomops) faradjius sp. nov. 



Type, No. 49222, d 71 ad. (in alcohol), Faradje, northeastern Belgian Congo, Nov. 

 1, 1913; Herbert Lang and James P. Chapin. American Museum Congo Expedi- 

 tion. Orig. No. 3015. 



Similar to A. osborni in general size and in coloration, but with a shorter fore- 

 arm (44 instead of 49 mm.), a vestigial p 2 on the right side only, in the toothrow 

 (visible only by aid of a strong lens), less developed sagittal and lambdoid crests 

 (doubtless due to the fact that it is much younger than the type of osborni), darker 

 upperparts and a more decided brownish band across the pectoral region. 



Upperparts blackish brown, much darker than in osborni; underparts blackish 

 brown along the sides and across the throat, forming a darker and broader pectoral 

 * band, the central area broadly whitish. Ears and membranes blackish, and in all 

 other respects similar to those of osborni. The broad patch of glandular hairs 

 between the ears deep black, fuller and longer than in osborni and covering the mem- 

 brane connecting the ears, but not lengthened into a crest as in Lophomops. , 



Total length, 108 mm.; head and body, 76; tail, 32; forearm, 43.5; third meta- 

 carpal, 42.5; third finger, 82; ear from crown, 10; from notch behind antitragus, 17; 

 expanse from tip to tip of both ears, 32.8; tibia, 15: foot, 9. 



Skull, total length, 22.2; zygomatic breadth, 12.9; mastoid breadth, 11.5; 

 breadth of braincase, 9.3; interorbital breadth, 4; maxillar breadth, 8.8; breadth at 

 base of canines, 6.7; upper toothrow (c-m 3 ), 7.6; length of mandible, 14; angle to 

 condyle, 4.5; depth at coronoid, 3.7; lower toothrow, 8.7; transverse extent of 

 lambdoid crest at upper border, 6.7. 



Represented by only the type, taken at Faradje, and labelled by the collectors 



