AGKICULURAL EXPERIMENT STATION. 109 



which grow immediately from the surface and curl round the sides 

 each way from the middle of the back ; head black. There ure 

 two little black spots on the top of both the first and second seg- 

 ments, w:th a pale line between them. The top of segments 4, G, 

 7, 8, 11, each bear a straight black brush of hairs. When at rest 

 the larvaj remains curled upon the leaf as shown in Fig. 8. Our 

 specimen agreed exactly with the above description in the number 

 of black brushes, though some specimens have only three tufts, 

 others six, and occasionally there are a few black hairs among the 

 yellow on the body. Our specimens were received about August 

 1st, which would indicate the seconjl brood, the first brood emerg- 

 ing in June. When grown the larvae seek a sheltered place, chink 

 in the bark of a tree or cap of fence, and change to a dark, shiny 

 brown chrysalis, encased in a pale yellow cocoon composed of silk 

 and hairs of the caterpillar. The insect passes th.3 winter in the 

 cocoon. 



The moth has light gray fore wings with a broken black band 

 near the margin and a few black spots in the middle. Hind wings 

 white with black marks in the fringe. 



Three-toothed Aphonus. 



Aphonus tridentatus, Say. 



(Orel. Coleoptera : Fam. Scarabidse.) 



Scarabteus tridentatus, Say, Jour. Acad. Nat. Sciences, Vol. 1, 

 No. 2, June, 1817. Original description Say's Entomology, Vol. 

 11, p. 134. Proc. Acad. Nat. Sciences, 1853, pp. 21-23. 



The technical description of the beetle as given by Say. is as 

 follows : 



Body black, punctured, clypeus, scabrous ; an obsolete elevated 

 abbreviated line in the middle ; an elevated transverse tridentate 

 line on the anterior submargin, confluent each side, Avith the lateral 

 reflected edge ; tip much narrowed, emarginate, reflected ; thorax, 

 punctures generally diffused ; scutel iinpunctured ; elytra with 

 punctured striae, beneath reddish brown. Length three-fifths of 

 an inch. Described from a single specimen brought from Arkan- 

 sas by Thos. Nuttall. 



