THE CANADIAN ENTOMOLOGIST. 217 



bicolor, Walk. albigutta, Boisd. 



Courregesi, Dognin. ' lugens, Hy. Edw. 



atra, Druce. Aemilia, Kirby. 



daruba, Druce. roseata, Walk, 



ergana, Druce. occide/iialis, French, 



aconia, H.-S. Eitpseicdosoma, Grote. 



thalassina, H.-S. floridum, Grote. 



Schausia, Dyar. Eucereon, Hiibn. 



argent at a. Pack. carolmum, Hy. Edw. 



subalpina, French. Theages, Walker." 



sobrina, Stretch. strigosa, Walk. 



?nixta, Neum.|| Bertholdia, Schaus. 



inge?is, Hy. Edw. specularis, H. S. 



ambigua, Strecker. trigona, Grote. 



LARVA OF TITANIC HELIANTHIALES, Murtfeldt. 



BY HARRISON G. DYAR, PH. D., NEW YORK. 



Miss Murtfeldt's interesting discovery of this leaf-mining Pyralid 

 suggested to me the inquiry as to how far the setae of the larva had been 

 affected by this unusual habit. The leaf-mining Tineids have tubercles 

 iv. and v. remote, while all the Pyralids that I have seen have these 

 tubercles united. I was interested to learn how far fixed this Pyralid 

 character is, especially as the setae have been studied in but a few 

 microlepidoptera. 



Miss Murtfeldt very kindly sent me her alcoholic specimens. The 

 larva has the flattened retracted head and large cervical shield of a leaf- 

 miner, but the body is not flattened and the slender legs are normal. The 

 setse are perfectly normal for the Pyralidse, iv. and v. closely united. 

 There is also the little additional tubercle before and above the spiracle, 

 which is present in other Pyralids and also in the Cossidae. In fact, the 

 larva strongly suggests a little Cossid, except that the feet are longer and 

 the circle of crotchets is broken on the outside. The pupa tells a different 

 story. It might belong to the Pyraloid Obtectse, which Dr. Chapman 

 says have obtect characters in practically all respects except the possession 



l|In the male type vein lo of primaries arises from the apex of discal cell on one wing, 

 distinctly stalked on the other wing, but with a basally directed spur, indicating an 

 accessory cell. On secondaries the supplementary vein preceding vein 8 is very short. 



"Type of Theages not examined. Tlie characters in the table are those of oiir 

 species, 



