A. A. GIRAULT. 51 



latter may sometimes have the fuscation of the fore wings 

 as intense as it occurs usually with this species and may be 

 as black as this species. But semifumatum may be distin- 

 guished at once from the fact that the posterior wings have 

 three complete lines of discal cilia. 



As its name indicates, the fore wings of this species are 

 deeply and distinctly fumated at their proximal half which 

 contrasts with the remaining clear portion of the wing. It is 

 true other species have some fuscation but with them it is 

 slight not noticeable casually and has usually been omitted 

 in descriptions. 



From specimens hereinafter listed I draw the following 

 additional descriptive details : 



Similar to niinntuni Riley but the wings have the following struc- 

 tural characteristics — the oblique curved line of discal cilia running 

 back from the stigmal vein contains from 7 to 9 cilia and is long and 

 complete, that is joins the proximal extension of the discal ciliation 

 and joining a complementary or reciprocal line running disto-caudad 

 forms a v-shaped ciliated line like a broad upper portion of the Greek 

 letter upsilon ; besides the deep fumation this is the characteristic 

 borne by the fore wing ; the posterior wing has three complete lines of 

 discal cilia, the intermediate one as usual being the more prominent. 

 Otherwise I am unable to distinguish the species from minutuin. The 

 ovipositor is slightly more prominent ; the antennas are similar, the 

 ring-joint perhaps less distinct but not enough so as to be character- 

 istic. The males are smaller, with the usual male antenna, winged 

 and more variable as to general coloration, both the head and thorax 

 being liable to be sordid yellowish, the body to be shorter, more com- 

 pact, robust, especially noticeable in the shorter tarsal joints. In both 

 sexes the single tibial spur of the posterior legs, and also the inter- 

 mediate legs, is large, the cephalic tibiae apparently spurless. The 

 ovipositor is slightly larger than usual, so as to seem somewhat top- 

 heavy. 



The foregoing notes taken from two slides of specimens 

 received in alcohol from Dr. D. T. Fulloway and mounted in 

 balsam. They were labelled as follows: " No. 1-1910. Egg- 

 parasite of Phlegethontius cingulata on sweet potato. Hono- 

 lulu. 11. iv. 10.", 6 9 's and 2 c5^'s, 2 9 's respectively. The 

 slide bearing 6 9 's has been deposited into the collections 

 of the Illinois State Laboratory of Natural History and given 

 the accession number 4-4-^189. 



TRANS. AM. ENT. SOC, XXX VII. 



