1 897.] ENTOMOLOGICAL NEWS. 69 



post-scutellum polished, no punctuation. The following are yellow: four 

 lines on mesothorax extending from prothorax almost to scutellum, ex- 

 cept two outer ones which are shorter and commencing in front of tegulse 

 and inclined inwards; scutellum small dot at each side and slightly in ad- 

 vance of same, post-scutellum, transverse spots behind same and two 

 large spots on posterior lateral angles, teguloe, tubercles, elongated spot 

 back of this (and sometimes a rounded spot back of elongated spot) and 

 a still larger triangular spot below these. Abdomen thickly, rather coarsely 

 punctured, a considerable growth of whitish hair below becoming quite 

 thick at tip, a large yellow band on first segment with touch of black above 

 and below not as thickly punctured as following, band on second segment 

 slightly emarginate on posterior side, a touch of black below, band on 

 third segment covering entire surface, bands on fourth, fifth and sixth seg- 

 ments with touch of black anteriorly, seventh segment black and emar- 

 ginate at tip; venter considerably marked with yellow; coxae yellow spotted, 

 trochanters yellow tipped, last half too two-thirds femora yellow, as are 

 tibia and first joint of tarsi, last joints of tarsi yellow inclined to rufous; 

 marginal cell about as long as first and second submarginal, second sub- 

 marginal receiving recurrent at its middle, third submarginal receiving 

 recurrent at end of first fourth. Wings inclined to dusky in outer half; 

 stigma and costa rust colored; submedian cell posterior wings slightly 

 larger than median on the externo-median nervure. 



Two specimens (No. 1591 Baker), Colorado, and one, Las Cru- 

 ces New Mexico, " on Salix." Cockerell. 



Related to P. pacificus Cr. and crabroniformis Sm., but differs 

 as follows: 



From pacificus in "two spots behind ocelli" forming distinct 

 band in having spots behind and below tubercles, in marking of 

 abdominal bands; abdomen thickly pitted and rather coarsely so 

 and venter yellow. 



From crabroniformis in having band on vertex, lines on meso- 

 thorax (four) and in last segment being black and in .punctuation 

 of abdomen. 



P. politus Say 9 , July-August; not uncommon here. 



P. dubins Cr. , July- August on Daucus carota; more com- 

 mon than politics. 



P. pundatus Say and 9 , July-August; common. 



P. pundatus Say van cockerelli n. var. . Differs from punc- 

 tatus in coloring being all white and wings entirely transparent 

 (Ckll. Nos. 1954 and 4726 " on Solidago' i 



P. sanborni Cr. , July 11 at Southampton, Mass. 



P. ventilabris P^ab., Algonquin, 111.; one (Dr. William A. 



