"WALSH DESCRIPTIONS OF N. AM. HYMENOPTERA. I 29 



tathoracic pleura extends halfway up to the wings. 5. The front coxae 

 have no rufous blotches ; the middle coxae are white with rufous blotches, 

 instead of being rufous; the two obfuscations on the middle tibiae are 

 much more distinct; and in the hind legs the extreme tip of the coxa is 

 white, the space intervening between the 2d and terminal I on tlie tibia 

 is sometimes pale rufous instead of white, and the spurs are sometimes 

 •entirely white. Length % •34--37 inch ; $ .33 inch. Front wing % .2^-.2'j 

 inch. Ovipos. .23 inch. 



Two % ; one 9. Distinguishable from varipes^ Cress., and 

 from all the preceding but simplicipes^ ])y its white clypeus, and 

 from that species by its rufous sternum and multiannulate hind 

 legs. 



Oiypta rniicornis, n. sp. — %,. — Differs from simplicifes $ only as fol- 

 lows: — I. The facial tubercle is very slightly polished and a trifle more 

 prominent. 2. The mandibles are pale rufous with their teeth black, and 

 the palpi are whitish. The antennae are opaque rufous above and below, 

 except joint i which is black and polished. 3. The thorax is subpolished 

 and less strongly sculptured, the metathoracic carinse distinct. The white 

 line before the front wing is very short, and the scutel is immaculate. 4. 

 The carinae on abdominal joint 1 extend § of the way to the tip, whence 



they become subobsolete. 5 6. The legs are pale rufous ; the 4 



front legs with the coxse, both trochanters, and the knees, white, and the 

 spurs and tarsi whitish ; the hind legs with the 2d trochanter white, the 

 extreme tip of the femora black, the tibiae white with their 2d and ter- 

 minal \ black, and the tarsi black with the basal \-\ of joints 1-5 white; 

 ■spurs blackish. 7. The wings are subhyaline : veins black ; stigma rufous 

 edged with black, and the 2d recurrent vein with the salient angle obso- 

 lete, and bullae C and D confluent. Length ^ .27 inch. Front wing ^ 

 ..22 inch. 



One c? ; ? unknown to me. Distinct from longiventris by its 

 rufous mandibles and antennas, its black sternum, and the differ- 

 ent ornamentation of its legs ; from varipes. Cress. , and all the 

 preceding but simplicipes and longiventris^ by its white clypeus ; 

 and from simplicipes by its rufous mandibles and antennae, and 

 its entirely different legs. 



Section 4. — Hind legs multiannulate with black and white. 

 Abdomen black with white bands. Clypeus white. 



61ypta [scitala, Cress., Trans. Am. Ent. Soc. iii. p. 155.] — $. — Head 

 «ubglabrous, polished, scarcely pubescent; facial tubercle very small and 

 imbedded in a carina which descends from between the antennae nearly 

 to the clypeus ; general color black, with an orbit entirely surrounding 

 the eye, the face except a minute elongate spot under each antennae, the 

 clypeus, the mandibles except their teeth, and the palpi, all white An- 



iii— 9 [May a6, 1S73.] 



