JAMES CHESTER BRADLEY 205 



5. Thorax rather long with its caudal face sloping and gradually rounded into 

 the dorsal, the humeral angles (as seen from aljovej rounded. 



rufa Lepeletier de Saint Fargeau 

 Thorax long, its humeral angles broadly rounded, its posterior face truncate, 



but rounded above into the dorsum hexagona Saj'. 



Thorax short, rectangular, its humeral angles sharp, its posterior face 

 squarely truncate and rather sharply separated from the dorsal. 



briaxus Blake 

 Mutilla (Timulla) barbata Fox 

 1899. Mutilla barhata Fox, Trans. Amer. Ent. Soc, 25:212, cf . 



This species is still known only from the unique t\'pe. It is a 

 close ally of the following. The transverse diameter of the 

 posterior ocelli is .09 mm.; their distance from the eyes .43 mm., 

 from each other .38 mm., from the front ocellus .21 mm. 

 Habitat. — ^Missouri. 



Mutilla (Timullaj ornatipennis n. sp. 



cf . Orange rufous, the second dorsal segment medially xanthine orange, 

 apical segments auburn-black, antennae black, the tip of scape and the pedicel 

 pale; legs black; front and dorsum with sparse, short, erect, red hairs; pro- 

 podeum with sparse, erect, short, white hairs, under side of sca})e, base of man- 

 dibles, sternal parts and under surface of coxae and femora with mostly rather 

 dense, long, white pubescence; head with silky, appressed, red pubescence; 

 dorsum with short, depressed, red pubescence; second and third dorsal segments 

 with very sparse and short, appressed, white hairs, along the apex with dense 

 appressed, bristly, red pubescence; following three segments with similar white 

 pubescence, the seventh with depressed, sparse, white pubescence; wings ornate, 

 fuscous, a transverse, broad, hyaline band in the region of the stigma, the cell M 

 except at apex, and the extreme ajiical margin also hyaline, the darkest fuscous 

 is at the apex of the cells 2d Ri+Ko ;ind K4. Length 11 to 17 mm. (Type 17 

 mm.) 



Vertex and front rather shallowly punctured, the punctures separated; 

 diameter of the posterior ocelli .17 mm., their distance from the ej-es .58 mm., 

 from each other .42 mm., from the front ocellus .28 mm.; platform on the front 

 at base of the antennae with only feeble bounding carinae; face below the 

 antennae raised to form a rounded tubercle, bearing a tuft of white hairs, the 

 clypeus below strongty concave, impimetate, and i)olishcd clear to the leases 

 of the mandibles, without a median tubercle, the margin subtruncate; man- 

 dibles with a very deep external notch and tooth on the inferior border. Anterior 

 margin of the scape with a carina inflated ])eyond the middle, forming a 

 rounded tooth; first segment of the flagellum greatly compressed, approxi- 

 mately ec}ual to the second. 



Pronotum weakly, l)ut clo.sely punctured, its side pieces obsoletely; these 

 each with an inferior, vertical, anterior carina; mesonotum and scutellum with 

 close round punctures, the scutellum convex; mesopleura each with a shallow 

 oblique fossa interrupted near the posterior borders; mesosternum on each 



TRANS. AM. ENT. SOC, XLII. 



