V 



12 Builetin of the Brooklyn Entomological Society voi. viii 



in naming this fine insect after Professor H. E. Crampton, who 

 collected the type on his recent trip with Dr. Lutz in British 

 Guiana and Northern Brazil. 

 Rhipidia unipectinata Williston. 



A female from the United States National Museum, deter- 

 mined by Coquillet as unipectinata, agrees well in most respects; 

 however, the stem and knob of the halteres is deep black, not 

 brown; wings with distinct costal blotches, etc. The coloration 

 of the posterior tarsi is very similar to that of R. calverti, which has 

 long, bipectinated male antennae, not long unipectinate antennae 

 as described for unipectinata. The specimen is labelled "Patalue, 

 Guatemala. 700 ft. (Dr. G. Eisen.) Received Jan. 6, 1903." 

 Rhipidia subpectinata pleuralis subsp. n. 



Resembles subpectinata Will., of the Lesser Antilles, but is 

 larger, the antennae dark brownish-black excepting the light yellow 

 12th and 13th segments; head brownish, gray pruinose, not 

 "ochraceous yellow." Thorax: mesonotum, praescutum as de- 

 scribed for subpectinata but with a broad median grayish stripe 

 overlying the brownish dorsum; scutum and scutellum broadly 

 whitish m.edially, brownish on the sides, a dark brown stripe on 

 either side of the pale median stripe. Pleurae not "with a narrow 

 black stripe" but with a broad black band, clearly defined on the 

 dorsal margin, below suffusing the ventral pleural sclerites; an 

 indistinct narrow stripe over the base of the coxse, almost confluent 

 with the broad dorsal band. Halteres light yellow, knob a little 

 darker. Legs: femora with an indistinct subapical brown band; 

 wings as in subpectinata. Abdomen dark brown, tergites 8 and 9 

 light yellow; sternites yellowish. 



Male: Length 4.8 mm.; wing, 5.7 mm. Female: length 

 4.9 mm.; wing, 5.8 mm. 



Holotype, male, Trece Aguas, Cacao, Alta Vera Paz, Guate- 

 mala, March 28 (coll. Schwarz and Barber). Allotype, female, 

 Bocas de Toro, Panama, 1905 (coll. McKenney). Types in coll. 

 U. S. Nat. Mus. 



It is probable that comparison with subpectinata will give 

 this form specific rank. The description of subpectinata agrees 

 closely with annulicornis End., except in the finely spotted wings 

 of the latter. The pale antennae of these two fonns is quite differ- 

 ent from that of pleuralis, which agrees in this respect with schivarzi 



