91 Dr. A. S. Packard, JVs Revision of the, 



yellow spot on each side of the third ring of the abdomen. Head of 

 much the same proportions as described in G. Q-maculatics, but more 

 coarsely punctured ; slightly hirsute in front of the ocelli and orbits, 

 broadly lined with silvery pubescence as is clypeal region ; clypeus 

 black, convex, well carinated. Mandibles yellow, lower edge yellow, 

 or more commonly black ; tips piceous, bases black. Antennas shorter 

 and more clavate than in preceeding species; subclavate, visibly 

 thickening towards the tip, yellow with a black round or ovate spot on 

 the inside ; flagellum black, fifth joint with a large rounded tooth-like 

 expansion beneath. 



Prothorax with an interrupted yellow stripe ; two submesial ridges 

 on meso-scutum ; tubercle yellow; a yellow stripe on scutelluin, some- 

 times reduced to two geminate spots ; enclosure of propodeum dis- 

 tinct, very irregular radiating rugae diverge from the base outwards; 

 below is an irregular net work of pentagonal and hexagonal fossae 

 bounded by rugae which have a general transverse direction ; the me- 

 sial furrow is not plainly marked on the enclosure. Fore femora 

 and tibiae simple, femora dark, becoming much paler towards the tips, 

 internally piceous and testaceous yellow, tibiae and tarsi yellow, joints 

 of latter glaucous brown towards tips, as in G Q-maculatus ; middle 

 femora black, tipped with yellow; tibiae yellow, lined with black in- 

 side; tarsi brown towards ungues; hind femora black, with a slight 

 yellow streak at the tip ; tibiae streaked with black ; tarsi broadly 

 streaked towards tips with brown. 



Abdomen short ovate, somewhat flattened, smooth and polished ; on 

 second ring two straight fasciae much larger than the rest behind, 

 nearly meeting ; on third ring a slight short linear sinuate fascia, two- 

 thirds shorter than the preceeding and much narrower ; bands on 

 fourth ring either disconnected or united and forming a continuous 

 stripe; on fifth and sixth rings a continuous band, on the latter 

 ring the band is slightly excavated on the hind edge; tip black, 

 piceous at edge, slightly hirsute. Beneath piceous, edges of rings 

 paler. 



Length of body, .34; head and thorax together, .18; abdomen, 



.16 inch. 



Differs from C. G-maculatus £ in its flatter body, the short stripe 

 almost uniformly present on the third abdominal ring, in the more 

 coarsely punctured head and thorax, the rugose propodeum and more 

 clavate antennae, and is on the average one-fourth smaller. 



9 . Differs from the % in having simple untoothed autennae, a 



