AMERICAN HYMENOPTERA. 99 



Ceelioxys SOdaliS. — %. — Very much like coloradensis, but differs as 

 follows; head and thorax more densely and less coarsely punctured; lateral 

 teeth of seutellum short and obtuse; legs entirely black, including tibial 

 spurs; abdomen more finely punctured, no spine on sides of fifth segment, 

 that on sides of the sixtli long and acute, the teeth on apical processes 

 straight, when viewed from above the upper two are on a line with the 

 lower two. Length .42 inch. 



Hah. — New York ; Colorado. Three specimens. 



Coelioxys mexicana. — 9 • — Black ; head and thorax closely and deeply 

 punctured; face and cheeks with short dense pale ochraceous pubescence, 

 most dense on sides of face; pubescence on eyes very short; anterior margin 

 of mesothorax, spot behind tegulas, line on base of seutellum and line on post- 

 scutellum of short dense appressed pale ochraceous pubescence; two lines of 

 short dense white pubescence on sides of pleura confluent beneath with a broad 

 central longitudinal strijDe on thB middle; seutellum (fig. 1) broadly rounded 

 behind, with a well defined central longitudinal carina, lateral teeth long, 

 divergent and compressed laterally; sides of postscutellum and of metathorax 

 with long pale pubescence; tegulse and legs fulvo-ferruginous; wings dusky, 

 darker on apical margin, coxae black, trochanters fuscous, the middle pair 

 elongate and subcylindrical when viewed laterally; teeth on anterior coxae 

 short and acute; abdomen shining, finely and sparsely punctured, a deeply 

 impressed transverse line on sides of segments 2 — 4, 

 sides of the first and apex of segments 1 — 5 with a 

 narrow fringe of dense pale pubescence; apical seg- 

 ment (fig. 4) long, gradually narrowed to tip which 

 is rounded, the sides slightly sinuate, an obscurely 

 defined central longitudinal carina; venter banded 

 with white pubescence, the fifth segment acutely angular at tip, the apical 

 segment (fig. 3) longer than the upper, broadly rounded on the sides and then 

 narrowed to apex, before which on each side there is a slight notch, (fig. 2, 

 apex in profile). Length .45 inch. 



%. — Face with dense golden pubescence, pale on tip of clypeus; apex of 

 abdominal segments 2 — 5 deeply transversely impressed, and lined with white 

 pubescence, the apical margin reflexed and smooth ; segments 4 — 6 with a line 

 of white pubescence at base; sides of fifth segment with a very short blunt 

 tooth; apical segment with an acute tooth on each side, the apex produced into 

 two bifurcate processes, the two upper teeth blunt and divergent, the lower two 

 longer than the upper, subacute and nearly straight; venter banded with white 

 pubescence, sometimes tinged with ferruginous, apical middle of fourth segment 

 with two short acute teeth. Length .45 inch. 



Hab. — Mexico, (Sumichrast). Four specimens. 



Ceelioxys zapoteca. — 9- — Black; head and thorax with large deep 

 and rather sparse punctures; broad anterior orbits and cheeks clothed with 

 dense silvery-white pubescence, on middle of face and clypeus which is finely 

 sculptured, there is a very fine appressed pale pile and a short scattered erect 

 pubescence; clypeus squarely produced at tip beneath which there is a fringe 

 of dense pale ochraceous pubescence; a curved line of rather long fuscous 

 hairs on vertex beneath posterior ocelli; a short carina between antennas; 

 pubescence of eyes very short; mandibles ferruginous; sinuate line on anterior 



