94 K W. Williston — North American Conopidoe. 



pleiirfe Leing white, the ahdomen reddisli yellow, with the posterior 

 niargiiis of the segments l)rowii, together with the length {-^ of an 

 inch), must apply to this and not to the preceding species. That it 

 is also Westwood's S. coufnsd seems certain from the length of the 

 second and third joints of the antenna?. 



Dalmannia. 



Dalmannia Rob. Desvoidy, Ess. ^^yod., 248, 1830. 



Dalmania id., Myopaires ; Loew, Centuries. 



Stachyma Macquart, Dipt, du Nord, 1830-34; Hist. Nat. des Dipt., ii, 36. 



Third joint of the anteniue with a distinctly dorsal bristle; pro- 

 boscis not longer than the body, bent near the middle, tlie terminal 

 division folding back; abdomen moderately contracted toward the 

 base, somewhat depressed, the ovipositor not as long as abdomen, 

 incurved and folded up beneath the abdomen ; anal cell short, but 

 little longer than the second basal cell. 



Shining black species with bright yellow markings. 



Dalmannia picta, new species. 



? . Face and cheeks light yellow. Front blackish, yellow on the 

 sides. Anteniue black, rather shorter than in D. nl(/rlceps. Thorax 

 black, shining; humeri, a small viltula in front of the wings, and tip 

 of the scutellum bright yellow ; pile white. Abdomen black, with 

 white pile; first segment with a broad posterior yellow ci"<)ss-l)and, 

 broken uj) into three angles on its anterior jjart ; third segment similar, 

 but the angles developed into thi-ee processes, the middle one acute, the 

 outer ones obtuse, rectangular ; in the fourth segment these processes 

 are produced nearly to the anterior border, the side ones larger and 

 each enclosing a small black spot ; fifth with a median triangle and 

 two oblique side spots. . Legs yellow ; anterior femora above nearly 

 the whole length, and the posterior above toward the end, deep black ; 

 tarsi black. Wings nearly hyaline. Length, 54^""". One specimen. 

 New Mexico. 



This species agrees rather closely with 7iigriceps^ but there can be 

 no doubt of their distinctness. The male will probably show similar 

 differences in the color of the legs and cheeks. 



Dalmannia nigriceps. 



Dalmannia nigjiceps Loew, Contiir., vii, 71. 



$ . Black, moderately shining. Front opacpie black, narrowly yel- 

 lowish near the eyes, ocellar tubercle shining. Face and narrow poste- 

 rior portions of the cheeks yellowish white, the cheeks broadly black. 



