186 AMERICAN HYMENOPTERA. 



succeeding ventral segments with adjoining or nearly adjoining jmnctures. Py- 

 gidium with fine apparently concentric wrinkles. 



Color. — Ferruginous, scape and pedicellum, mandibles at base and apex very 

 dark brown, appearing rather black, flagellum brown, dorsum of head, thorax 

 and second abdominal segment covered, almost to the extent of hiding the sculp- 

 ture, with appressed golden hairs, interspersed rather sparsely with rather erect 

 black hairs; legs, suture between first and second dorsal abdominal segments, 

 apices of abdominal segments, practically all of the exposed portion of the dorsal 

 segments beyond the second and all of the ventral segments beyond the third, 

 black; sides of head and thorax, dorsum of first abdominal segment and venter 

 of abdomen clothed with rather erect and sparse black hairs. 



Type. — University of Kansas. 



Type locality. — Hamilton Co., Kansas (F. H. Snow). 



IVIiitilla prognoides n. sp. 



Related to orcus and leda with the color pattern of magna. 

 Snperficially like progne. 



9- — 16 mm. — Head. — Quadrate, as wide as the thorax, excluding the temples, 

 and space adjoining eye closely lather rugosely punctured, no carinse, the malar 

 space a little longer than the greatest diameter of the eye, pedicellum a little 

 shorter than the second joint of the flagellum, the first joint of the flagellum a 

 little longer than the two succeeding joints together. 



Thorax. — From above rather ovoid, the greatest length of the same distinctly 

 greater than the greatest width of the thorax, dorsum with large shallow almost 

 adjoining punctures, prothorax witn a longitudinal rather undulate carina on the 

 pleura anteriorly, the junction of the dorsum with the pleura not carinate, rather 

 crenulate, pro- and mesopleura practically rugoso-punctate, the impressed space 

 between pro- and mesopleura tessellately punctured, metapleura shining, largely 

 impunctate, posterior face of metathorax dull, rather reticulate. 



Abdomen. — First dorsal segment dull, reticulate, second dorsal segment shining, 

 with shallow, almost confluent punctures, the succeeding dorsal segments, except 

 the ultimate, have their sculpture hidden by pubescence more than the second 

 segment, pygidium finely longitudinally striate, the strife almost straight; first 

 ventral segment carinate, the carina produced into triangular projections or 

 teeth that about divide the carina into thirds, the anterior tooth longer than the 

 posterior one, the second ventral segment punctured and shining, much like the 

 corresponding dorsal segment, the succeeding ventral segments very closely punc- 

 tured and dullish. 



Color. — Black, dorsum of head, thorax and abdomen, the latter inclusive of the 

 first segment, covered with a rather dense ochreous appressed pubescence that 

 almost or actually obscures the sculpture, in addition the dorsum of the head has 

 sparse erect black hairs and abundant erect ochreous hairs, dorsum of thorax and 

 abdomen, the latter, excepting first segment, with abundant erect ochreous hairs; 

 greater part of head and thorax sparsely covered with black hairs as are the first 

 dorsal, basal fifth of second dorsal and the second ventral segments, beyond the 

 second segment the ventral segments are rather densely clothed with black pu- 

 bescence. 



