34 PROCEEDINGS 0F» THE NATIONAL MUSEUM vol. 105 



Male, length 5.2 mm., tegmen 6.3 mm. 



Specimen examined: Holotype male. Cinchona, Jamaica, July 25, 

 1924, C. C. Gowdey (USNM 62056). 



This species resembles C. elevans (Walker) in general build of body 

 and gross structure of male genitalia, and is undoubtedly closely re- 

 lated to it. It differs in the coloration of the head and tegmina and 

 in the shape of the processes of the aedeagus. 



Genus Thionia Stal 



Thionia St^l, Berliner Ent. Zeitschr., vol. 3, p. 321, 1859 (logotype, Issus longi- 

 pennis Spinola, Ann. Soc. Ent. France, vol. 8, p. 348, 1839; designated by 

 Schmidt, Stettiner Ent. Zeit., vol. 71, p. 189, 1910). 



Subgenus Cheiloceps Uhler 



Cheiloceps Uhler, Proc. Zool. Soc. London, 1895, p. 68. (Haplotype, Cheiloceps 

 musca Uhler, loc. cit.). 



This subgenus is distinguished from the typical subgenus by the 

 shape of the ovipositor, which is relatively elongate strongly tapering 

 distad, decurved, and acute at apex. In the typical subgenus the 

 ovipositor is short and concealed by the short, convexly subquadrate 

 third valvulae. 



Thionia (Cheiloceps) musca Uhler 



Figure 4,a-e 

 Cheiloceps musca Uhler, Proc. Zool. Soc. London, 1895, p. 68. 



The figiu-e of the male genitalia was kindly prepared by Dr. W. E. 

 China from a male cotype in the British Museum (Natural History) 

 which is here designated as the holotype. The remaining figm-es are 

 of a female cotype in the U. S. National Museum which is here desig- 

 nated as the allotype. The typical pair was the only material avail- 

 able for study from St. Vincent. 



Thionia {Cheiloceps) musca grenadana, new subspecies 



Figure 4,/,g 



Closely similar in external characters to the typical subspecies. 



Anal segment of male with lateral margins at middle produced 

 ventrad in a broader lobe. Aedeagus in profile acute apically, a 

 long spmose process arising laterally approximately one-quarter from 

 apex, directed laterad for half its length and slightly curved, then 

 abruptly bent upward and continued straight to acuminate apex. 



Male, length 3.8 mm., tegmen 3.1 mm. Female, length 3.8 mm., 

 tegmen 3.8 mm. 



Specimens examined: Subspecific holotype male, allotype female, 

 and 2 nymphs, Grenada, B. W. I., Oct. 20, 1943, Fennah (USNM 

 62057). 



