AMERICAN HYMENOPTERA. 315 



transverse triangular projections, the space between these and the middle cox* 

 roughened by small transverse ridges. Petiole of abdomen very finely and 

 sparsely punctulate, broadly sessile with the second segment, its length about 

 equalling its breadth, the front angles bluntly dentiform, the ventral surface 

 provided with a A-shaped carina, which is emarginate before its anterior termi- 

 nation ; remainder of abdomen impunctate; pygidium broad and rather blunt, 

 very finely aciculate. Hairs of thorax and abdomen sparse, dusky; abdominal 

 segments except the first provided with a thin fringe of white plumose hairs. 

 Legs testaceous ; hind femora, tarsi, and tibial spurs lightly in fuscated. Wings 

 hyaline, veins testaceous, stigma testaceous but a little darker than the veins, 

 second submarginal cell receiving its recurrent vein before the middle, third 

 suhmarginal wanting. 

 Length, 8 mm. 



Fig. 60; front wing. 



One male collected by Mr. C. H. T. Townsend at La Cueva, 

 Organ Mountains, New Mexico. Altitude about 5300 feet. The 

 insect was taken at light on the 9th of September. The species 

 seems to come near juxta Blake. 



Type in collection of the National Museum, Washington, D. C. 



77. Mutilla imicolor Cresson (137). 



A single specimen examined from the collection of the Museum 

 of Comparative Zoology, collected in California, in August. 



78. JIutilla anthophorse Ashmead (138). 



A female specimen of what seems to belong to this species was 

 collected at Yuma, Arizona. 



As Mr. Ashmead's description of this Californian species is not 

 accessible in this city, the determination rests on Mr. Fox's ana- 

 lytical key. 



79. II ut ilia tapajos Blake (143). 

 Texas (M. C. Z.). 



80. Mutilla Kimpliciventris sp. nov. 



Male. Moderately robust, rufotestaceous; head broadly rounded, moderately 

 punctured, hind ocelli spaced apart as far as they are from the eyes ; prothorax 

 and mesothorax coarsely punctured, the grooves abbreviated anteriorly, meso- 

 sternum with two crenulate ridges, metathorax strongly reticulate, the bisected 

 anterior area as long as five of the meshes; petiole of abdomen triangular sessile 

 the punctures of the first and second segments strong, pygidium finely margined, 

 last ventral with deep punctures; vestiture simple; wings subhyaline, veins and 

 stigma testaceous, third submarginal nearly obliterated, second submarginal large. 



Rufotestaceous, rather robust; head slightly produced behind the eyes, bind 

 angles broad, hind margin truncate, punctures rather deep and close between the 



TRANS. AM. KNT. SOC, XXIX. OCTOBER. 1903 



