TEXAN HYMENOPTERA. 277 



clothed with a long appressed ochraceous pubescence; basal.margin of second 

 segment, an oblique line on each side dilated laterally, a broad band on third 

 and fourth segments, that on third interrupted in the middle and somewhat 

 oblique laterally, clothed with short dense whitish pubescence ; apical seg- 

 ments clothed with black or fuscous pubescence, more or less mixed with yel- 

 lowish laterally; disk of apical segment rather broad, rounded at apex. 

 Length .55 — 75 inch. 



% . — Clypeus, labrum and spot at base of mandibles yellowish white; an- 

 tennae not as long as head and thorax, brown or testaceous beneath ; posterior 

 disk of mesothorax and scutellum thinly clothed with a short black or fuscous 

 pubescence; anterior part of pleura more or less stained with rufo-testaceous ; 

 abdomen more densely pubescent tban 9 ) a double band on second segment 

 confluent laterally, the apical one slightly interrupted medially, and a sub- 

 basal band on three following segments, also slightly interrupted medially, 

 that on fifth segment narrow, the color of these bands varies from white to 

 ochraceous. Length .60 inch. 



Seven specimens. (Belfrage; Boll.) Smaller than either of the 

 two preceding species, and while the 9 more closely resembles that of 

 Comanche, the £ is more nearly allied to that of obliqua. The three 

 species are, however, quite distinct. 



Iflelissotles rivalis, n. sp. 



%. — Black, head and thorax clothed with a dense whitish pubescence, that 

 on occiput and thorax above slightly tinged with pale ochraceous; clypeus 

 yellowish-white; tips of mandibles honey-yellow; antennae as long as head 

 and thorax, brown or pale fulvous beneath, sometimes entirely fulvous; pos- 

 terior disk of mesothorax and scutellum very thinly clothed with pubescence 

 which is short and generally slightly mixed with black; tegulae fuscous; 

 wings hyaline, apical margin faintly dusky ; legs clothed with short pale pu- 

 bescence, dense on tibiae and tarsi and yellowish on latter; abdomen oblong- 

 ovate, convex, shining, minutely punctured, thinly clothed with a short pale 

 pubescence, first segment at base and sides clothed with a rather long, sub- 

 erect pale pubescence, each segment with a subapical fascia of short appressed 

 whitish pubescence, generally more or less interrupted medially on basal seg- 

 ments, quite narrow on first segment, moderately broad on remaining seg- 

 ments, lateral margin of fourth and following segments carinate, ending in a 

 prominent tooth on fifth and following segments, that on the sixth large 

 and subacute. Length .45 — .55 inch. 



Five specimens. (Belfrage ; Boll ) Nearly allied to the % of 

 tnenuachus, but with shorter antennae and more distinctly banded ab- 

 domen. 



Welissodes mentiachus. 



Melissodes menuachus, Cress. Trans. Am. Ent. Soc. i., p. 388. 

 Twenty $ 9 specimens. (Belfrage; Boll.) 



