148 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



caudal end, etc. These differences are pointed out in the following 

 key: 



Larv.^ 

 1. Size smaller (fully grown, length, 14-15 mm.) ; mandible with 

 the largest of the two teeth at mid-length, slender, rather 

 sharply pointed; labrum with the lateral lobes produced 

 cephalad and proximad, almost touching one another on the 

 middle line ; stigmal field with the dark markings pale, brown, 

 those of the ventral lobes not enclosing an oval pale area at 

 their proximal ends. Hexatoma megacera O. S. 



Size larger (fully grown, length, 18-26 mm.) ; mandible with 

 the largest of the two teeth at mid-length stout, blunt; labrum 

 with the lateral lobes produced cephalad and scarcely proxi- 

 mad, widely separated from one another; stigmal field with 

 the dark markings black or very dark brown, those of the 

 ventral lobes contiguous at their inner ends and there enclos- 

 ing an oval pale area. Eriocera fultonensis Alex. 



Pup^ 

 1. Size small (length under 10 mm.) ; scapal spine larger; no pro- 

 jection on the mesonotal praescutum. 



Hexatoma megacera O. S. 

 Size larger (length over 12 mm.) ; scapal spine small; a small 

 projection on the mesonotal praescutum. 



Eriocera longicornis Walk. 



ERIOCERA Macquart 



The information that was available concerning the species of this 

 genus was included in a paper by Alexander and Lloyd cited before 

 (Journal of Entomology and Zoology, VI, March, 1914), but since 

 that article was written a few more items concerning the biology of 

 members of this genus have been ascertained. 



Eriocera brachycera Osten Sacken. 



Eriocera brachycera Osten Sacken; Bull. U. S. Geol. Surv., Ill, 

 205, 1877. 



This species is one of the rarer forms in the Eastern United 

 States. A pair that was collected by the author on August 4, 1914, 



