98 Dr. A. S. Packard, Jr's Revision of the 



with no fuscous tints. The meso-scutelluni and meta-scutelluni are 

 marked with yellow, the vertex is not so convex, and the prothorax is 

 a little broader and the clypeus a little longer, the teeth of the anten- 

 nae are longer and scape more yellow, and the fasciae of the abdomen 

 are much longer and narrower in proportion. In the propodeum of 

 C. denticulatus the mesial furrow disappears below the enclosure, but is 

 developed below this point into a large triangular fossa, the bottom of 

 which is concave and corrugated. In two specimens from New York, 

 the fasciae approach very closely, and in one specimen the fourth pair 

 of fasciae unite to form a continuous band. 



C. tenuiglossa, n. sp. 



9 . Head of much the same form as in C. pavper, but a little 

 shorter, and the eyes are more contiguous; vertex convex, not broad, 

 slightly channelled in front of the anterior ocellus, all three of which 

 are arranged in a curved line forming a low triangle. Orbits lined 

 with a coarse yellow pubescence of a deeper tint than the clypeal re- 

 gion which is more silvery on the ends of the hairs. Mandibles long 

 and slender, almost unidentate, the two terminal teeth minute and 

 rounded, black. Lingua greatly elongated beyond the two broad 

 lateral lobes, compressed at the end, tip hirsute as usual, not expand- 

 ing. Joints of both pairs of palpi expanding towards tip where they are 

 testaceous, and at base fuscous. Antennae filiform, scape slightly 

 swollen in the middle, entirely yellow, flagellum entirely black, joints 

 short, sutures distinct, terminal joints long obconic. 



Surface of prothorax flattened and obsoletely carinated, angular on 

 the sides, with a slight mesial notch separating two yellow patches; 

 meso-scutum thickly punctured, raphe and submesial ridges nearly 

 obsolete, parapsidal grooves form faintly impressed lines, scutellum 

 puuctured, black ; meta-scutellum smooth, elevated, short, with a narrow 

 transverse linear yellow line. Propodeum with a distinct semiovate 

 enclosure in which the mesial furrow expands into a long, broad hexa- 

 gonal area, and on each side are three fossae, two of which are basal 

 and subquadrate, the other semi-ovate and situated on each side of 

 the square enclosure succeeding the basal hexagonal one : below the fur- 

 row contracts, and is crossed by ridges. Sides of the scutellum smooth, 

 transversely striated becoming on the extreme flanks; situated on each 

 side and parallel to the furrow, is a longitudinal depression, in which 

 the striations become curved. The flanks are smooth and punctured 

 on the convexities, and striated on the concave portions. Tegulas tes- 

 taceous, hinge pieces of wings darker, nervures fuscous, pterostigma 



