700 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 

 27. ^dilis nodosus Fabricius. 



Found under the bark of the pine from June to September. The 

 specimens collected about Philadelphia are quite small compared with 

 those found in the pine forests of New Jersey. (Bland, Proc. Ent. Soc. 

 Phil., i, p. 97.) 



28. ^dilis obsoletus Olivier. 



Taken under the bark of pine stumps at and near Philadelphia. Not 

 common. (Bland, I. c.) 



29. The pine euderces. 

 Eudercea pini Olivier. 



Order Coleoptera; family Cerambycidje. 



To distinguish this beetle from Psenocerus supernotatus it is only 

 necessary, says Dr. John Hamilton, to remember that the prothorax of 

 E. pini, instead of being pitted, is longitudinally rugose, and that there 

 is on the elytra anterior to the middle a smooth, ivory white, obliquely 

 transverse line, which is wanting in P. supernotatus. (Can. Ent., xvi,, 

 p. 36.) 



A small cylindrical long-horned beetle, having a wide separation between its 

 thorax and abdomen, giving it some resemblance to an ant, 0.23 to 0.30 long, of a 

 bright chestnut coloi", with its abdomen and the posterio r third of its wing-covers 

 black, the wing covers crossed obliquely forward of their middle by a silverj"^ white 

 line which does not reach to the suture, and posteriorly on the fore part of their black 

 portion a gray band, which is placed in a shallow groove running obliquely and par- 

 allel with the silvery line ; the thorax covered with fine impressed lines running 

 lengthwise. 



This is said by Olivier to have been found on pines around the city 

 of New York, but it is probably a Southern insect. (Fitch.) 



30. Black-horned callidium. 



Callidium antennatum Newman. 



Order Coleoptera; family Cerambycid^. 



A flattened long-horned beetle, appearing in May and June, about 

 0.52 long, of a deep Prussian blue color, often with shades of green in 

 places, its aiitenuiB and legs black, its thorax hairy, and as broad as 

 the wing-covers, with the sides strongly rounded and above on each 

 side of the middle a little round hollow spot, and its wing-covers rough 

 from close shallow pnnctures. (Fitch.) 



Dr. Harris regarded this as identical with the European G. 

 violaceiim, deeming the latter to have been probably intro- 

 duced into Europe from this country. (Treatise, p. 88.) But 

 entomologists now consider the insects of the two continents 

 to be distinct species. Ours, doubtless, has the same habits with that 



