12 PROCEEDINGS OF THE NATIONAL MUSEUM VOL.78 



1902. Nyctinomops aurispinosus Miller, Proc. Acad. Nat. Sci. Philadelphia, 



vol. 15, p. 393, May, 1902. 

 1909. Dysopes aurispinosus Lyon and Osgood, Catal. Type-Spec. BuU. U. S. 



Nat. Mus. 62, p. 279, January 28, 1909. 



Type locality. — The type and only specimen known was taken "on 

 board the U. S. S. Peacock off the coast of Brazil. On the 18th of No- 

 vember, when the ship was about 100 miles from land, south of Cape 

 St. Roque." Type specimen in United States National Museum. 



Diagnosis. — This bat is intermediate in size between T. laticaudata 

 and T. macrotis, its nearest relatives. The tibia is 15.5 mm. and the 

 forearm is 50.0 mm., while in T. laticaudata, the tibials 13.2-14.6 and 

 the forearm 46.0-48.6. In T. macrotis the tibia is 16.4-17.8 and the 

 forearm 58.2-63.8. 



Measurements. — For detailed measurements see table, page 22. 



Specimens examined. — One, the type. 



Remarks. — This bat is nearer to T. laticaudata than to T. macrotis; in 

 fact it is my opinion that it is the same as the first-named species; 

 but until specimens of T. laticaudata are known with a forearm reach- 

 ing 50.0 mm. and a tibia as long as 15.5 mm., one can not positively 

 say that it is. 



It was originally a dry skin, but was placed in alcohol November 27, 

 1899, after relaxing in water to bring out the characters of the ears 

 and membranes. Mr. Gerrit S. Miller, jr., then made a note of the 

 color on the back of the label: "Belly wood brown; back between 

 wood brown and russet." There is no skull. 



TADARIDA LATICAUDATA (E. Geofifroy) 



1805. Molossus laticaudatus Geoffroy, Ann. Mus. Paris, vol. 6, p. 156. 



1876. Nydinomus gracilis Dobson, Proc. Zool. Soc. London, p. 731, November 



7, 1876 (part). 

 1878. Nydinomus gracilis Dobson, Catal. Chirop. Brit. Mus., pp. 436-437, (part). 

 1902. Nyctinomops laticaudatus Miller, Proc. Acad. Nat. Sci. Phila., p. 393, 



May, 1902. 



Type locality. — Paraguay. Geoffrey in his description of the 

 species bases his name on Azara's description of bat No. 8 from 

 Paraguay. 



Geographic distribution. — Brazil and Paraguay. 



Diagnosis. — Upper parts vandyke brown (Ridgway 1912), under 

 parts paler, the hairs tipped with pale buff. One skin from Brazil is 

 lighter in color, more of a reddish brown, but this skin is immature. 

 Forearm, 45.6-48.6 mm.; total length of skull, 18.5-19.5 mm. This 

 species is intermediate in size between T. europs and T. macrotis. 



Measurements. — For detailed measurements see tables, pages 22 

 and 27. 



Specimens examined. — Thirty-eight from the following localities: 

 Brazil: Piracicaba, 1 skin; St. Catherine, 2 skins. Paraguay: Asun- 

 cion, 9 alcoholics, 5 skins; Sapucay, 10 alcoholics and 11 skins. 



