ZENILLIA AND ALLIED GENERA — SELLERS 61 



point; first and second segments with one pair of marginal macro- 

 chaetae, third with a marginal row of macrochaetae, and fourth tipped 

 with marginal bristles; fourth segment of male with a striking thatch 

 or dense group of bristles on sides extending straight back. 



Length 7.5 to 8 mm. 



The puparium resembles that of Carcelia reclinata. 



Type series localities. — Orizaba (Veracruz) and Teapa (Tabasco), 

 Mexico. 



Distribution. — Puerto Rico 1, Mexico 2. 



Type series. — British Museum. 



Hosts. — "Larva on calabash tree" 4, Megolopyge krugii Dewitz 1. 



Remarks. — The description is based on an examination of one male 

 and three females reared from "larva on calabash tree'' in January 

 1912 (Hooker) ; one female reared from Megolopyge krugii (Van 

 Zwalenburg) . 



The writer had the privilege of examining the type series of 

 Exorkta flavirostris Van der Wulp in the British Museum. This 

 series consisted of one male and two females, which varied as follows 

 from the foregoing description: Male with six frontal bristles, fe- 

 male witli six varying from five to seven ; facial ridge bristly on low- 

 est one-third; one female lacked the brassy tinge to parafrontals, 

 which were slightly blackish toward vertex (junction of second and 

 third antennal segments of this female reddish). 



Thorax bluish-silvery-gray pollinose, male with shoulders and ex- 

 treme sides golden pollinose, one female faintly golden-pollinose and 

 other female lacking golden tinge; scutellum yellow, blackish in 

 one female ; male with one strong and one weak sternopleural macro- 

 chaetae on one side and only one on other. 



Abdomen with golden tingle to pollen; abdominal hairs suberect 

 in male. The female that lacked the brassy tinge to the parafrontals 

 lacked the golden tinge to the pollen of the thorax and abdomen. 



The discrepancies are minor in character, and the writer questions 

 the desirability at this time of considering the Puerto Rican speci- 

 mens other than Carcelia flavirostris. 



11. CARCELIA DIACRISIAE, new species 



Zenillia n. sp. (4) Schaffneb and Griswold, U. S. Dept. Agr. Misc. Publ. 188, 

 p. 113, 1934. 



Although a larger fly, this species resembles Carcelia perplexa. 

 It differs in having the legs and abdomen wholly black, the front 

 tibia with only one long posterolateral bristle instead of two, and 

 the dorsal vitta obscure except on the basal half of the second seg- 

 ment. The genitalia of the two forms are very distinct. The puparia 

 are different. 



