NORTH AMERICAN HYMENOPTERA. 289 



DESCRIPTIONS OF NEW HYMENOPTERA. 



RY T. D. A. COCKERELL. 

 (With Notes by W. J. Fox) 



PIiotop!«is picus si>. iiov. % 7-10 mm. long, anterior wing (i-7 mm. — Dark 

 honey color; antennse fulvous. Legs variable, entirely pale ochreous, or dirty 

 straw color, or the four hindnjost femora largely blackened. Wings smoky hya- 

 line, ivith a large fuscous cloud bei/ond the marginal cell ; nervures partly brown and 

 partly colorless, stigma dark brown ; sculpture ordinary ; pleura and dorsum of 

 prothorax closely and deeply punctured ; mesothorax strongly, but not so closely 

 punctured; metathorax reticulate. Abdomen with first segment finely reticulate, 

 second with numerous broadened shallow punctures; the remaining segments 

 smooth and shiny, becoming punctured below on their distal margins ; first joint 

 of flagelluin a little longer than second. Head round seen from in front, with 

 the eyes large and black ; raet.tthoFax rapidly descending, but rounded. Abdo- 

 men elongate; the first segment with its anterior half very narrow, suddenly 

 imdening just before its middle to the bulbous post^^rior portion, which is i-apidly 

 narrowed at its junction with the second segment; genitalia projecting in the 

 form of a single short spine, which is slightly curved upwards. Very slightly more 

 than half of the stigma enclosed in marginal cell : marginal cell a little shorter than 

 stigma, abruptly truncate before and, behind ; two suhmarginals only ; the first long 

 and narrow, longer than stigma ; the second beneath the first, moderately small, 

 triangular, its inferior distal angle a little more than a right angle ; the single 

 recurrent nervure entering second submarginal before its middle. 



i?r/Y^— Santa Fe, New Mexico (Ckll. 1665, July 25, 1894, and 

 CklL, 1775, beginning of August, 1894) ; Las Cruces, New Mexico 

 (E. O. Wooton, September, 1894) ; San Augustine, New Mexico 

 (Ckll. 2081, Aug. 28, 1894, and three others taken by Prof. Townsend 

 at same place and time) ; all taken at light. The San Augustine 

 specimens show the Avhole range of the variation in the color of the 

 legs. 



The species allied to P. picas are in a considerable state of con- 

 fusion, and it becomes necessary to enter into some detail in order 

 to make the exact position of the new form clear. 



The supposed mellipes which ("Ent. News," 1894, j). 200) I 

 com])ared with P. territm, had been so named for me by Mr. Fox, 

 but it turned out that this was a mistake. Thereupon, after com- 

 parison with the coll. Am. Ent. Soc. it was labeled albipes ; but 

 when I wrote Mr. Fox that I could not separate this so-called albij)es 

 from nubecula, he examined the collection and discovered that the 



TRANS. AM. ENT. SOC. XXII. (37) AUGUST, 1895. 



