DTPTEEA. 271 



have the closed first posterior cell of E. iota, but the wing-markings are always paler 

 and less extensive, especially in the proximal brown band. 



Exoprosopa limbipennis (p. 84). 

 To the localities given, add : — Mexico, Dos Arroyos, Rincon, Tierra Colorada, and 

 Amula in Guerrero (H. H. Smith), Northern Yucatan (Gaumer). 



Sixty specimens. The majority of them, both male and female, agree fairly well 

 with the description given by Osten Sacken ; but there are others that do not, and 

 I am inclined to doubt the distinctness of E. procne, O. S. I find that there is a 

 variation in the relative length of the third antennal joint, apart from other differences. 



Several examples from Dos Arroyos, which at first sight seemed to belong to a very 

 different species, have the first posterior cell closed in the margin or narrowly open, 

 the abdomen almost wholly white-tomentose, the hind margin of the segments only 

 being black, and the brown of the wings narrower. 



7 (a). Exoprosopa sackeni, sp. n. 



Exoprosopa, sp. ? no. 1, O. Sack, antea, p. 86 \ 



S . Closely allied to E. limbipennis, differing more particularly in the markings of the abdomen. The second 

 segment has a broad white band, and the seventh also has white hairs, the abdomen elsewhere being 

 black-tomentose, with a fringe or narrow posterior band of rufous tomentum on each of the segments. 

 The wings have the anterior border coloured darker brown and more narrowly than in E. limbipennis ; 

 there is a brown cloud at the base of the fourth posterior cell, another, less distinct, at the base of the 

 third, and one also on the vein that closes the outer anterior submarginal cell near its junction with 

 the second vein ; and the anterior cross-vein has a broad cloud, coalescent with the brown of the 

 anterior margin of the wing. Antennae black, the first joint in large part reddish; style rather more 

 than half the length of the third joint. Face and lower part of the front with fulvous pile ; face 

 on the sides yellowish-red. Hair on the front and sides of the throat and at the base of the abdomen 

 reddish-yellow. The four posterior femora in great part, and the front femora also in part, yellow. 

 Length 12-1S miliim. 



Hab. Mexico (Sumichrast l ), Hacienda de la Imagen and Venta de Zopilote in 

 Guerrero (H. H. Smith). 



Three specimens. The one from Venta de Zopilote, a female, has the face wholly, 

 and the antennas in great part, as well as the femora and tibiae, yellow ; the brown of 

 the wings encroaches more in the second basal cell, and the stump in the discal cell 

 is lono-er. It is possible that these differences are sexual. I believe that this is the 

 species mentioned by Osten Sacken {antea, p. 86, no. 1, under E. anthracoidea). 



Exoprosopa rostrifera (p. 86). 



To the localities given, add : — Mexico, Xucumanatlan, Amula, and Omilteme in 

 Guerrero (H. E. Smith). 



Fifteen specimens. 



