702 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



Fig. 231.-nylo- 

 tritpes bajulus. 

 —After Leng. 



31. The porter hylotrupes. 



Hylotrupes bajulus LinniBus. 



Order Coleoptera ; family Cerambycid^. 



A beetle very similar to the preceding in its shape and habits, ap- 

 pearing in July and August, .45 to .75 long, of a black color, its 

 thorax nearly circular and clothed with white hairs, with a smooth 

 polished black line in its center, and a callous-like spot on each side 

 of it, and its wing-covers with very coarse, shallow confluent punct- 

 ures and some downy whitish spots, forming two irregular bands near 

 the middle. 



This species is supposed to have been introduced in its 

 larva state in timber from Europe, and is found in our 

 country only near the sea coast. (Harris' Treatise, p. 88.) 



Fig. 238.— The lesser Prionua. 

 Natural size. — After Riley. 



32. The lesser prionus. 



Orthosoma hrunneum De Geer. 



Order Coleoptera ; family Cerambycid.e. 



A flattened long-horned beetle, 1.00 to 1.30 long, and 

 less than a third as broad, •« ith its opposite sides paral- 

 lel, its thorax twice as broad as long, and with three 

 sharp teeth on each side, its wing-covers withtwo or three 

 slight elevated lines, its antennae scarcely as long as the 

 body, and its color chestnut red, darker anteriorly 



Two dozen or more of the grubs were taken, 

 May 26, by Mr. Calder and myself from a very 

 soft, rotten pine stump ; up to June 24 they 

 had not pupated in confinement, but by the 5th 

 to the 8th of July one of them became a pupa. 



Mr. Calder has also found the fully grown 

 larvse in August in maple logs at Warwick, R. I., and in the rotten 

 wood of another deciduous tree. So that it appears that this beetle 

 lives indifferently in the soft, decayed logs or stumps both of hard and 

 coniferous trees. 



Larva. — Described while alive. Body cylindrical, not flattened, the segments very 

 distinct, as the sutures are deeper than usual ; head moderately broad ; prothorax 

 large and broad and rather long, being 9'"'" broad and 4^""" long ; surface rough op 

 the posterior two-thirds. On each of the first to seventh abdominal segments is a 

 transverse oval cylindrical flesliy area, each with three transverse folds, the area on 

 the seventh ring being nearly twice as long (antero-posteriorly) as that on the first, 

 the areas becoming longer and narrower, i. e., more rounded, going backward towards 

 the seventh segment ; the end of the abdomen smooth and shining ; each thoracic 

 segment with a pair of slender three-jointed feet. Length, 35'"'" (li inches). 



In addition to the description on p. 161 of Bulletin 7, the following 

 characters may be noted : 



Head about one-half as wide as the prothorax. Front edge of epicranium rough, 

 olack, with a spine on each side below, projecting over the clypeus (" epistoma" of 



