630 FAMILY IV. SCOLYTID^E. 



elytra strongly punctured, but not in rows, impressed along the suture 

 behind middle, the tip rounded. The form is stouter, size much smaller, 

 punctures coarser than in allied species. (LeConte.) Length 1 1.5 mm. 



Tybee Island, Ga., June, July. (Wenzel.} Lake Okeeckobee, 

 Fla., March 8. Illinois, South Carolina. Ranges from New Jer- 

 sey to Florida in the coastwise states, June, August. Breeds in 

 pine twigs. 



1009 ( ). PITYOPHTHORUS TOMENTOSUS Eich., 1878, 201. 



Oblong, subelongate. Piceous, almost shining, thinly pubescent with 

 very short hairs. Thorax oblong-ovate, almost constricted in front, 

 smooth behind. Elytra smooth, obliquely deplanately subretuse at apex. 

 Male, front densely clothed with yellow hair at sides. Length 1.5 mm. 



Described from North America. Placed by Eichhoff next to 



pusiUus. 



1010 (11,242). PITYOPHTHOKUS coNCENTRALis Eich., 1878, 188. 



Elongate. Ferruginous-testaceous, almost shining, sparsely clothed 

 with grayish hair. Thorax oblong, narrowed in front, almost constricted, 

 front part with elevated tubercles concentrically arranged, behind sparsely 

 feebly punctate. Elytra from base to apex almost equally deeply punc- 

 tato-striate, intervals narrow, impunctate; declivity as described in key. 

 Closely allied to P. consimiMs ; differs in the sharply raised concentric 

 lines on anterior part of thorax. Length 1.5 mm. 



Biscayne Bay, Fla., under bark of Rhus. Abundant in semi- 

 tropical Florida on poison-wood (Rhus metopium}. (Scliwarz.') 

 Described from Cuba. By the co-operation of several parent 

 beetles a large central chamber of irregular outline is excavated 

 under the thin bark of the trunk or larger branches; several (two 

 to five) more or less undulating primary galleries radiate there- 

 from, the eggs being deposited singly in little indentations. The 

 larval galleries are short, either diverging in the usual way or 

 frequently intersecting each other, or even reverting to the central 

 chamber. 



1011 (9076). PITYOPHTHORUS CONSIMILIS Lee., 1878, 622. 



Yellow-brown, shining, with a few erect yellow hairs; elongate-cylin- 

 drical, of the same form and sculpture as P. annectens, except that the ob- 

 tuse elevation of apical declivity of elytra, and the corresponding part of 

 suture are sparsely crenate; antennae and legs yellow, form a trifle more 

 robust. Male, head flat, slightly pubescent, with a large, subquadrate, 

 densely punctured opaque spot occupying nearly the whole upper surface 

 and divided by a longitudinal impressed line; sides shining, sparsely 

 punctured. Female, head slightly convex, strongly punctured. Length 

 1.6 mm. 



