NO. 2013. BATS OF THE 0ENU8 M0L08SUS— MILLER. 89 



MOLOSSUS smALO.£ Allen. 



1906. Molossus sinaloas Allen, Bull. Amer. Mus. Nat. Hist., vol. 22, p. 236. 

 July 25, 1906. (Escuinapa, Sinaloa, Mexico.) 



Like Molossus pretiosus but color a dark brownish drab. Speci- 

 mens examined from Sinaloa (Escuinapa), Yucatan (Yaxcash), 

 Honduras (Chamalicon), Nicaragua (Graytown), and Panama (Punta 

 de Pena). 



Second or currentium-group. — Size less than in the rufus-group; fore- 

 arm ranging from 39 to 42 mm, greatest length of skull from 18 to 18.6 

 mm ; rostral breadth across canines slightly less than 5 mm. 



MOLOSSUS CURRENTIUM (Thomas). 



1901. Molossus obscurus currentium Thomas, Ann. and Mag. Nat. Hist., ser. 7, 

 vol. 8, p. 438. November, 1901. (Goya, Corrientes, Argentina.) 



Size less than in the members of the rufus-group ; greatest length of 

 skull, 18-18.6 mm.; greatest breadth across upper canines less than 

 5 mm.; general color a dark brownish drab. Specimens examined 

 from Argentina (Goya) and Brazil (Manaos and Obydos). 



MOLOSSUS BOND.^: Allen. 



1904. Molossus bondm Allen, Bull. Amer. Mus. Nat. Hist., vol. 20, p. 228. 

 June 29, 1904. (Bonda, Santa Marta, Colombia.) 



Like Molossus currentium but color very dark, approaching the 

 seal-brown of Ridgway. Specimens examined from Nicaragua (Grey- 

 town) and Panama (Chorrera, Am. Mus. Nat. Hist.). 



Third or obscurus-group. — length of forearm usually less than in the 

 members of the currentium-group but seldom falling below 37 mm. 

 (36-41 mm.) ; skull constantly smaller (greatest length, 15^17.4 mm.). 



MOLOSSUS FORTIS, new species. 



Type.— Adult male (in alcohol). Cat. No. 102319, U. S. National 

 Museum. Collected at LuquUlo, Porto Rico, March 5, 1900, by L, 

 Stejneger and C. W. Richmond. 



Size maximum for members of the olscurus-group; lower leg and 

 foot usually more than 22.6 nim. (22-23.8 mm.); skull and teeth 

 normal. Measurements of type: head and body, 66 mm.; tail, 37.5; 

 tibia and foot, 23; forearm, 40; third digit, 81; fifth digit, 43; great- 

 est length of skuU, 17.5; condylobasal length, 16.0; breadth of brain- 

 case, 8.9; mandible, 12.2; maxillary toothrow exclusive of incisors, 

 6.6; mandibular toothrow exclusive of incisors, 7.2. Confined to 

 Porto Rico, 



