3O2 ENTOMOLOGICAL NEWS. [July, '17 



Some Bees of the Genus Psaenythia (Hym.). 



By T. D. A. COCKERELL, Boulder, Colorado. 

 Many years ago Professor L. Bruner collected three species 

 of the wasp-like Panurgid genus Psaenythia at Carcarana, Ar- 

 gentina. They were sent to the National Museum, and are 

 now in my hands for determination. One proves to be a fe- 

 male of P. picta Gerst, but the others are considered new. 



Psaenythia thoracica crawfordi n. subsp. 



Larger than true P. thoracica from Parana, about 8.5 long in both 

 sexes ; female with lower border of clypeus black, and the black on 

 disc extending upward as two large wedge-shaped marks; supra- 

 clypeal area black; mesothorax, scutellum, postscutellum and two trans- 

 verse marks on basal part of metathorax red ; pale yellow abdominal 

 bands narrowly interrupted on first two segments, constricted but not 

 interrupted on third and fourth, very narrowly interrupted on fifth. 

 Male with face cream-colored below antennae, the supraclypeal mark 

 notched above; anterior margin of mesothorax broadly black; no red 

 on metathorax; all the abdominal bands interrupted. 



The female, in my collection, was reqeived from the National 

 Museum, labelled P. thoracica Gerst. by Mr. Crawford. The 

 male (Bruner 33) evidently belongs with it. In spite of the 

 greater size, I should not separate this from P. thoracica (de- 

 scribed from the male), but for the fact that Friese has the 

 female of that insect (from Villa Rica, Paraguay), and states 

 that the abdomen has on each side of segments 1-5 a small yel- 

 low three-cornered spot. Since Friese's insect is from a region 

 comparatively near the type locality, there is no reason to doubt 

 that it represents the species correctly ; P. thoracica crawfordi 

 is evidently a well-marked subspecies from the desert regions 

 of the interior. 



Psaenythia pachycephala n. sp. 



$. Length about 10 mm., robust; head very broad; eyes rather 

 small, green, strongly diverging below. Black, with clear ferruginous 

 legs, the markings cream-color, those on face and mandibles lemon - 

 yellow. Mandibles long, yellow on outer face except at apex ; clypeus 

 (which is extremely broad and low), labrtim, large dog-ear marks, 

 and space between clypeus and dog-ear marks and orbits yellow, the 

 lateral yellow ending above horizontally, not quite reaching level of 

 top of dog-ear marks; a cream-colored mark on upper part of each 



