ON THE LARWK OK THREE COLEOPTERA. :>- 



by the use of a y^ incli objecti\'e. The first two joints are 

 linely bristled. 



Mandibles heavy, somewhat triangular in outline, the tip 

 thinner, striate, the middle portion ( shaded in the figure ) 

 thicker than the remainder and more perfectly chitinized. 



Maxilla^ with a large basal piece bearing an inner bristled 

 lobe and a two-jointed palpus, of which the first joint is 

 remarkably short and thick, the second rather slender, bristled 

 at tip. I have shaded the more perfectly chitinized portions. 



Prothorax a simple ring of soft consistence and without 

 special marks. 



Meso- and metathorax larger but of practically the same 

 structure. 



Abdomen soft, nine-jointed, the segments gradually smaller 

 to tip, the spiracles lateral, nearer the anterior than the pos- 

 terior margins. 



Legs tuberculiform. 



These larva^ were taken in October from the seeds of 

 Honey-locust. They were so badlv infested b\- a little 

 Hymenopterous parasite [CcenopJunics ipcrnwphagi Ashm. 

 MS. j that I could use but very few for study. Each larva 

 that was attacked contained fovu* or five grubs of this parasite 

 which spun up in fine white cocoons before transforming. A 

 lot of little naked black pupa found in cells with fragments of 

 Spcniiop/iciiJKs larvie produced four-winged flies ( IloJcopcItc 

 popenoei Ashm.) which Mr. Ashmead considers secondary 

 parasites. They probably prey on Ciejiopliaiics. 



The figure of this larva is a mere sketch from an old out- 

 line of mine and while representing the general shape verv 

 well has never had the details filled in because of the unex- 

 pected death from parasitism of my only good specimen. 



