124 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



Baccha torva, n. sp. 



Rabitat.—TexRS, ! 



9. Length, 9 to 10""". Cheeks extremely uarrow; face wholly yel- 

 low. Front very narrow above, shining black, yellow on the sides be- 

 low; two small, yellow spots just above the base of the antennae. An- 

 tennae black, third joint oval, thickened. Thorax black; humeri, a spot 

 on the outer end of the suture, the post-alar callosities, and scutellum, 

 3'ellow or luteous, the latter more brown on the disk. Abdomen elon- 

 gate, shining brownish black, anterior outer part of the second-fourth 

 segments more luteous; broadest at the tip of the second segment. 

 Legs luteous, the hind pair blackish; hind tarsi, except the last two 

 joints, light yellow. Wings nearly hyaline; the immediate base, the 

 costal and subcostal cells, and a broad triangular cross-band reaching 

 to the outer part of the sixth vein, dark brown. 



One specimen, Texas (National Museum, Professor Eiley's collec- 

 tion). 



Bacc&a capitata. ' 



Baccha capitata Loew, Centur., iii, 25. 



Habitat. — Cuba (Loew)! 



$ . Length 12'°'". Fuscous-ochraceous, opaque, rather bare. Head, 

 thoracic stripes, spots of the pleurae, scutellum, and abdominal fasciae, 

 light yellowish. Hind femora and the hind tibiae, on their distal, half, 

 fuscous. Costa of the wings rather broadly clouded Avith subfuscous, 

 near the tip fuscous. 



Head large, liglit yellow ; frontal lunule fuscous-ochraceous, circum- 

 scribed with fuscous. Antennae obscurely ochraceous. Occiput black, 

 white polliuose, the pollen of the orbits light yellow. Dorsum of the 

 thorax fuscous-ochraceous, opaque, with four light yellow stripes, the in- 

 termediate ones posteriorly acute and moderately abbreviated, the lat- 

 eral ones broadly interrupted. Scutellum light yellow, near the tip 

 usually fuscous-ochraceous. Pleurae with light yellow spots, variegated 

 with obscure ochraceous and fuscous. First segment of the abdomen yel- 

 low, with a fuscous-ochraceous posterior fascia ; remainder of the abdo- 

 men fuscous-ochraceous, with ochraceous pile, clothed more thickly near 

 the tip of the abdomen ; the second segment has at its base a yellowish 

 cross-band ; third segment with a rather broad, light-yellow cross-band; 

 fourth at its base with a narrow, saturate-yellow band. Legs ochra- 

 ceous : hind femora, except the base and tip, and the distal half of 

 the hind tibiae, fuscous. Wings hyaline, the costal border rather broadly 

 clouded with ochraceous-subfulvous, fuscous near the tii>. 



Translation from the original, compared with the type. 



The stripes of the thorax and bands of the abdomen would be more 

 properlj' described as light ochraceous. It is a beautiful large species, 

 characterized especially by its general light color. 



