AMERICAN HYMENOPTERA. 69 



The antennae are long, as long as to third segment of abdomen, se- 

 taceous, densely ciliate; second joint yellow; nasus and labrura emargi- 

 uate, with a sharp ridge from edge of nasus to venter, dividing between 

 antennae, and enclosing lower ocellus in a long, deep basin; third joint 

 of palpi short, globose, fourth enlarged at apex, the two black vitti^ 

 are on the side lobes of mesothorax ; the spurs are pale, long and sharp, 

 the inner spur of anterior tibire twice as long as the other, and sharp. 

 Intermediate tibire and all the tarsi black. The wings are obscure 

 black, with a yellowish hyaline band across their middle, edges dis- 

 tinctly marked; first submarginal cell short, and wider than long; se- 

 cond recurrent nervure received at or near intersection of second and 

 third submarginal cell. The female resembles the male. 



Cordova, Tampico, Mexico, T. C", Huastec, t. f. Mexico, (H. deSaus- 

 sure.) (12 S , 2 9 .) 



This and the two following species and probably that preceding, are 

 much more slender than the northern species. 



12. Hylotoma fascialis, n. sp. 



Testacei.ms, with most part of tlie head, two vittse on thorax, and three apical 

 segments of abdomen black; wings black, with a broad yellowish fascia in 

 middle. Length 0.26. Br. wings 0.60 inch. 



$ . Testaceous ; antenn;c as long as thorax, compressed, widest at 

 base, curved, setaceous, ciliate, the two basal joints pale. Head black, 

 the whole face around and beneath antennse whitish ; nasus and labrum 

 emarginate; a sharp ridge from edge of nasus dividing between auten- 

 usd, and forming a deep basin, enclosing lower ocellus; two vittie on 

 the side lobes of metathorax and the three apical segments of abdomen 

 black. Legs testaceous; apical two-thirds of hinder tibia) piceous ; 

 apical joints of all the tarsi blackish; spurs pale, all long and sharp; 

 inner anterior tibial spur nearly as long as first tarsal joint. Wings 

 with a broad, yellow hyaline band across the middle of both pair ; 

 their basal fifth and about one-quarter of their apex blackish (includ- 

 ing tip of stigma and all of third and fourth submarginal cells). 



Mexico. One Z . (H. deSaussure). 



The abdomen is not very stout. 



13. Hylotoma semifuscus. 



Testaceous, with the head, three vittse on thorax, most of tergtim, and a spot 

 on breast black; the wings yellow hyaline, their ajiical half black. Length 

 0.26. Br. wings 0.60 inch. 



% . Testaceous; antennae as long as thorax, slender, sickle-shaped, 

 ciliate ; their two basal articles pale ; nasus emarginate and ridged as 

 in H. j^roccra, the deep basin enclosing ocellus divided into two by a 



