MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



295 



F,G. y.-Brain o/tte locuM. l. Front view of the brain of Caloptenu. femur. ruirum: opt. gang., ^"^ /anKUon ^oc oc^U a^^ nerves 



Lan... ,,..,n!l.,...ner. ,„ i^^ -XL:T:^Z T:^^':^^^^ "^^i::!^ l!^^;:^: 



nrmliular muscles play in the lateral angles. The moon-shaped edge is that made by the knife passmg through the eenter of the X 4, 

 y": ^tlirfrom aht-e "et 'ers as beforeK 5. Subcesophageal ganglion from above : t. c, commissure to the succeed.ng thorae.c ganghon ; 

 nthor Ipttero aci before Fie. 3 is enlarged eight times; all the rest twenty-five times. . . ,„ 



Drawn from original dissections by the'late Mr. Edward Burgess.-From Second Eeport U. S. Entomological Commission. 



