THE CANADIAN ENTOMOLOGIST. 285 



NOTES ON PACHYBRACHYS AND DESCRIPTIONS OF NEW 



SPECIES. 



BY FRED. C. BOWDITCH, BROOKLINE, MASS. 

 (Continued from page 244.) 



Pachybrachys marginipennis, nov. sp. — The size and general colour 

 of livens, Lee, dull yellow, elytra with very narrow dark edging, and with 

 brown or livid punctures, largely diffuse. Length, 1^-2^ mm. 



Head flat, yellowish, moderately punctured, more thickly on the 

 darker marks in the middle and on the vertex ; eyes moderately distant 

 (much nearer than aelatus), nearer in $ ; antennae of ^ reaching a trifle 

 beyond the middle of the abdomen, of ? to beyond the hind coxa? ; five 

 or six basal joints colour of head, rest dark brown, thorax somewhat 

 tubularly narrowed in front and slightly constricted behind, broad, 

 depressed in front of scutellum, colour same as the head, with the basal 

 part of the standard M very indistinctly suffused in livid ; in its most 

 distinct form it is three poorly-defined spots at the base, from that form it 

 passes to where the livid colour may be almost generally suffused; sides of 

 thorax subangulate, especially noticeable in $ , slightly sinuate towards 

 the rear in $ , hind angles very sharp, fine and nearly rectangular: elytra 

 parallel, roller-shaped, finely and diffusely punctured, the punctures 

 towards the sides and rear arranged in lines so as to give the appearance 

 of flat intervals at the sides and on the convexity. The third, fifth and 

 humeral intervals are the most noticeable, the suture and lateral edge is 

 very narrowly black, the latter sometimes broken ; lobe moderate, with a 

 fine row of marginal punctures on the curve, marginal striae with a very 

 moderate curve ; below dark brown, epimera, sides of abdomen and last 

 ventral segments colour of elytra ; sometimes this yellow embraces the 

 metasternum and nearly all the abdomen, leaving only a brown marking 

 on the side of the metasternum, and the rest of the surface with more or 

 less livid clouds, with darker clouds on thighs; the yellow of the pygidium 

 is complete except that central and two side spots are darker. 



Three $ 's, two 9 's, San Diego, California. Type coll., Bowdiich. 



Livens, Lee, differs from this species by the absence of a dark 

 margin to the elytra, and in having a well-defined median livid cloud on 

 the thorax  the eyes in livens are also more distant. Ccelatus, Lee, has 

 more distant eyes and a well-marked shield. 



Pachybrachys punctatus, nov. sp. — Same general form and colour as 

 livens, Lee, but much larger; dull yellow, with livid marks on thorax, 

 and livid-coloured, mostly diffused punctures on elytra, Length, 2-2^ mm. 



August, 1909 



