120 TRANS. ST. LOUIS ACAD. SCIENCE. 



except a medial black band which on 5 is sometimes interrupted, rufous. 

 The terminal J of 6 obscurely rufous. Venter yellow, with an abbreviated, 

 lateral, fuscous vitta on each joint, the entire base of 1 black and the two 

 or three last joints mostly fuscous. 7. The legs are rufous, the front coxae 

 and trochanters yellowish; in the middle and hind legs the coxa; and the 

 basal trochanters are black tipped with yellowish and the terminal tro- 

 chanters vice versa. Claws simple. 8. The stigma is black, and the peti- 

 ole of the areolet is only \ as long as the rhomb. Length rf .35-.3Q. inch. 

 Front wing o* .26-.27 inch. 



Two % ; 2 unknown. Very like the preceding, but sufficiently 

 distinct by the black face, the black middle coxae, and the differ- 

 ent fasciation of the abdomen. 



Lampronota breviventris, n. sp., $.— Differs from {scutellaris, Cress.] 

 5 only as follows : — 1. The white markings of the latter become here yel- 

 lowish-white or are obsolete. 2. The entire head is black, save that the 

 clypeus is rufous, and the palpi and mandibles, except their black tips, 

 whitish. 3. The antennae are brown-black immaculate and only § as long 

 as the body. 4. The tegulse and a minute spot before them are whitish, 

 but the rest of the thorax is black. 5. The metathorax is perfectly opaque, 

 and its two carina? are pretty distinct except towards the tip. 6. The ab- 

 domen is regularly oval, and the terminal joints are subpolished. Joint 1 

 is only § longer than wide, 2^ times as wide behind as before, with its 

 sides straight | of the way from the tip to the base, whence they converge 

 more rapidly. Joint 2 is J shorter than 1, but is scarcely as long as wide ; 

 3 is a trifle shorter than 2 and \ shorter than wide, and 4-7 regularly and 

 rapidly diminish in length. On joints 2 and 3 there is a pretty distinct 

 pair of the typical tubercles. Basal § of joint 1 black; the rest of the ab- 

 domen rufous. Ovipositor \ longer than the body, bright rufous, piceous 

 at the extreme tip; sheaths black, very slender, and of uniform width 

 throughout. Venter yellowish, with an abbreviated, lateral, fuscous vitta 

 on joints 2-4; joint 6 slightly projecting beyond the tip of the dorsum. 

 7. The legs are rufous immaculate. Claws simple 8. The stigma is black 

 and the petiole of the areolet is very short. Bulla; C and D widely sepa- 

 rated, and the 2d recurrent vein scarcely biangulated. Length § .37 inch. 

 Front wing Q. .26 inch. Ovipos. .45 inch. 



One 9 ; 6* unknown to me. But for the differently colored ab- 

 domen, and especially the difference in the bulla?, this might be 

 taken for § of pictiventris. Differs from all the species but pic- 

 tiventris and ttigrita by the shortness of abdominal joints 2 and 

 3, and from all without exception by the bulhe C and D not being 

 confluent. A similar anomaly in these bulla? occurs in Pimpla 

 annulipes, Brulle. 



Section 2. — Thorax and legs without white or pale yellow 

 markings. 



