276 ENTOMOLOGICAL NEWS. [Oct., '06 



slightly shiny, with very fine rather close punctures; median groove 

 well impressed, parapsidal grooves not very plain ; truncation of meta- 

 thorax not surrounded by a salient rim, its surface reticulately lineolate 

 and with a few oblique punctures and from center of base a few short 

 radiating strias; base of metathorax finely reticulately lineolate, dull, 

 with a few irregularly longitudinal striae reaching about half way to 

 apex except occasionally two or three medial ones which reach almost 

 to apex ; mesopleurae roughened, vertically striate, with oblique punc- 

 tures, more apparent anteriorly; metapleurse finely lineolate, slightly 

 vertically striate, with a few scattered punctures more numerous at the 

 upper posteiror angles; wings hyaline, nervures and stigma light honey- 

 color, third submarginal about one-third longer than second, narrowed 

 about one-third to marginal; tegulze largely testaceous; legs black, 

 anterior and middle knees, a stripe on front of anterior tibise and apical 

 joints of tarsi reddish; hind inner spur with about four long teeth; 

 abdomen transversely lineolate, closely and minutely punctured, segment 

 I almost impunctate ; bases of segments 2 and 3 with indistinct lateral 

 hair patches; segments 4 and 5 covered with thin whitish pubescence; 

 venter with segments 1-3 red, rest black. 

 Length about 7^2-8 mm. 



Six specimens from West Point, Nebraska, June 15, 1905; 

 on Rosa arkensena (Prof. L. Bruner and Harry Smith). 



This species is named after Mr. Myron H. Swenk, from 

 whom I first received the species, in recognition of his excel- 

 lent work on the bees of Nebraska. 



In general form this is like H. galpinsiae Ckll., but that 

 species has the head strongly punctured, the mesothorax much 

 more closely punctured, the first segment of abdomen not 

 transversely lineolate, as well as having the entire abdomen 

 black. H. ovaliccps Ckll., the only described species from the 

 United States with a red abdomen, has the face much longer 

 and the punctures of the mesothorax much closer and stronger, 

 nervures dark, etc. 



This species has a most remarkable resemblance in its 

 general form and color to Sphecodogastra te.vana Cress., which, 

 in addition to its generic differences, also differs in the strong 

 punctures of the head, larger size, first segment of abdomen 

 not transversely lineolate, etc. 



The type has been deposited in the National Museum and 

 paratypes in the collections of the American Entomological 

 Society and the University of Nebraska. 



