98 E. T. CilESSON. 



margin of segments 1 — 5, more or less interrupted on middle, of dense white 



pubescence; apical segment (fig. 4) more closely punctured, rather suddenly 

 depressed and narrowed to tip which is obtuse, 

 K~~X/ I [ \ /an indistinctly defined central longitudinal carina; 



venter with large sparse elongate punctures, the seg- 

 ments fringed at apex with short pale pubescence, 

 apical segment (fig. 3) narrow, slightly incurved, 

 longer than upper segment, gradually narrowed to 



tip, before which on each side there is a slight notch, (fig. 2, apex in profile). 



Length .53 inch. 



Hah. — New York, (Comstock) ; Colorado, (Morrison). Three 



specimens. 



Coelioxys floriflana.— '^ . — Black, shining; head and thorax with large 

 deep punctures, clotlied with pale pubescence most dense on face, vertex and 

 sides of thorax; head larger than usual, lower part of cheeks with a broad 

 rather deep groove, their posterior margin carinate; pubescence on eyes short; 

 the usual lines and spots of dense white pubescence on thorax; carina before 

 tegulse acute and emarginate in middle; scutellum broadly rounded behind, 

 with a short tubercle in middle, lateral teeth long, divergent and acute; 

 tegulse pale testaceous; wings fuliginous at apex; legs slender, ferruginous, 

 coxse black, intermediate trochanters elongate subcylindrical when viewed 

 laterally; abdomen shining, sparsely punctured, segments 2 — 5 each with a 

 deep oblique groove, which on segments four and five have a line of white 

 pubescence; sides of segment one, and apical margin of 1 — 5 with a fringe 

 of short white pubescence; a short spine on each side of fifth segment; sixth 

 segment deeply grooved at apex, produced into two bifurcate processes, the 

 teeth acute and straight, the lower pair slightly longer than the upper, a 

 short spine on each side at base; venter banded with white pubescence. 

 Length .53 inch. 



Hah. — Florida. One specimen. 



Ceelioxyscoloradensis. — % . — Black, opaque; head and thorax coarsely 

 confluently punctured, thickly clothed with whitish pubescence, which, on 

 the face is very dense, long and pale ochraceous; eyes densely pubescent; 

 scutellum broadly rounded behind, the lateral teeth long, acute and slightly 

 hooked at tip; tegulse polished black; wings clear, the apical margin fuligi- 

 nous; legs black, the femora, especially the two anterior pairs fringed behind 

 with long white pubescence, tibial spurs and tarsi pale ferruginous; abdomen 

 rather closely punctured, a deep transversely impressed line at base of seg- 

 ments 2 — 5, sides and apical margin of segments 1 — 5, and basal margin of 

 4 — 6 with a fascia of white pubescence; base of first segment thinly clothed 

 with erect pale pubescence; a blunt tooth on each side of fifth segment, and 

 also on the sixth which is produced at apex into two b-ifurcate processes, the 

 upper teeth short, blunt and slightly divergent, the lower teeth straight, acute 

 and much longer than the upper; venter banded with white pubescence. 

 Length .45 inch. 



Hah. — Colorado, (Morrison). One specimen. This and the next 

 species are closely allied, differing chiefly in the armature of the 

 scutellum and apex of abdomen, and in the color of the legs. 



