172 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io6 



Types: Holotype, female (ITSNAI 62427), Buenos Aires, Trinidad 

 Mountains, Cuba, C. T. Parsons, June 17-23, 1939. Allotype, 

 (USNM), Havana, Cuba, Baker. 



Remarks: This species was recognized as new by Parsons, but he 

 was not certain that it might not be a variation of pictus. The group- 

 ing of the species in this genus reveals, however, that this species could 

 not possibly be a variation of pictus because of the distinct pollmose 

 postvertical stripe. 



This species differs from cubanus by the larger theca of the female, 

 although it is not as large as in pictus. The male is very similar to the 

 male of cubanus; but, since cubanus belongs to the brackyrhynchus 

 group, it lacks the distinct pollinose postvertical stripe, the facial 

 grooves are darkened near the oral margins, and the cheeks are entirely 

 yellowish. In addition, the hum.eri are yellow. The male of parsonsi, 

 on the other hand, belonging to the excisus group, has the distinct 

 postvertical stripe, black on the cheeks, and no trace of darkening in 

 the facial grooves at the oral m.argins. The humeri, while covered with 

 yellow pollen, are black underneath. 



Physoconops (Pachyconops) palUpes (Eymelt) 



Aconops palUpes Eymelt, Senckenbergiana, vol. 25, p. 53, 1942. 



This species has not been seen, but it appears to belong to this 

 subgenus. Although described under Aconops, the illustration of the 

 antennae as well as the description clearly indicate that it does not 

 belong to the subgenus Aconops as defined here. 



Range: Brazil (Espirito Santo). 



Shannonoconops, new subgenus 



Similar to the subgenus Pachyconops in all respects except for the 

 shape of the terminal segments of the abdomen in both sexes. 



The male has abdominal segment 6 elongated so that it is longer than 

 wide, and terminates in a relatively sharp point. Superficially, the 

 abdomen resembles that of the subgenus Sphenoconops of the genus 

 Conops. 



Contrar3^ to the female of Sphenoconops which is relatively normal 

 in appearance, the female of this subgenus is very peculiar. Abdom- 

 inal segment 6 is narrower at the base than at the apex, and the result- 

 ing segment 7 is elongated. The posterior outline of segment 7 is 

 semi-S-shaped, being concave above and convex below. 



Type: Physoconops apicalis, new species. 



Physoconops {Shannonoconops) apicalis, new species 



Description: Male: Length 14}j mm. Front and vertex black, 

 slightly yellowish in front of ocellar swelling. Face and cheeks, 



