310 A. L. MELANDER. 



narrow. Abdomen robust, strongly petiolate, first segment one-third longer 

 than broad at apex, closely punctured, sharply constricted from the second seg- 

 ment, but subnodose, ventral punctures coarser, keel also punctured ; remainder 

 of abdomen im punctate, except that ventrally the second segment bears fine dis- 

 tant punctures. Legs testaceous, tibial spurs somewhat darker. Wings sub- 

 hyaline, veins testaceous, stigma fuscous, third submarginal wanting; in the 

 middle of the hind margin is a suffused brownish cloud. 

 Length, 15 mm. 



One male, Fort Washington, Cal., October 3, 1895, collected by 

 Miss Rose Patterson, in whose honor the species is respectfully 

 dedicated. 



66. Jlutilla albicinctn Fox (103). 



Numerous specimens do not disagree with the description of this 

 species except for individual differences, and may possibly be the 

 same form, although they are from a different State, being taken at 

 Arrogo, near Talarosa, New Mexico, August 13, at light (Townsend 

 collector, Cockerell). Some of the specimens show a minute denti- 

 cle on the mesosternum, which may be the beginning of a pro- 

 nounced armature of future generations. 



67. Mutilla \\ Vst<-ol I ii sp. nov. 



Male. Elongate, rufo-testaceous. Head produced and rounded behind the 

 eyes, hind portion truncate when viewed from above, sparsely clothed with long 

 white hairs, which arise from the scattered minute punctures, no other punctures 

 present; ocelli rather large, hind ones closer together than to the eyes; a deep, 

 narrow line arises midway between the base of the antenme and the anterior 

 ocellus, in a large, deep puncture, and continues forward to the antennse ; cly- 

 peus broadly and shallowly concave, truncate apically ; antennae testaceous, 

 reaching back to the middle coxre, scape with short fine hairs and punctures 

 above ; mandibles blackened at the obliquely tridentate tips, white-bristly along 

 their base. Thorax elongate pyriform, prothorax coarsely rugosely punctured, 

 mesonotum with scattered deep punctures, shining, the grooves abbreviated in 

 front, the middle ones fuscous, tegulas testaceous, inipunctate, scutellum coarsely 

 rugosely punctate, metanotum coarsely reticulate, the basal areas about equalling 

 two of the other meshes, its hairs very sparse and short, but becoming plumose, 

 white and long laterally; mesopleurse nearly inipunctate in front, becoming 

 deeply pitted on the bulbous hinder portion ; mesosternum with two sharp, beak- 

 like teeth. Abdomen very slender, petiole gradually broadening to the thorax, 

 where it is two times as broad as at the base, over two times as long as apical 

 width, nearly inipunctate above, the sides with obscure punctation ; remainder 

 of the abdomen inipunctate. Vestiture of the abdomen consists of scattered fine 

 white hairs and an apical fringe of broad and strongly plumose white hairs, which 

 give a banded appearance to the abdomen. The usual U-shaped speculum present 

 on the third segment. Legs testaceous, becoming fuscous beyond the middle of 

 the four posterior femora, frout tarsi and all tibial spurs fuscous, hairs dusky 



