670 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



C. (S.) advena Smith. 



Female : head and thorax coarsely sculptured ; dorsal aspect of 

 the propodeum very coarsely sculptured with strong longitudinal 

 or slightly oblique ridges which extend to the posterior aspect; 

 scape partly yellow ; postocellar line subequal with the ocellocular 

 line; first two abdominal segments with two yellow spots, those 

 of the second pointed internally. Male: cheeks armed with a 

 keel; clypeus yellow; tibial shield dark brown, marked with fine 

 yellowish lines; mesepisternum striato-punctate. 



This species has been recorded from the State but definite data 

 are wanting. 



C. (S.) tumidus Packard. 



Female: head and thorax without long shaggy pubescence; 

 wings subhyaline; mesepisternum not striate; hind tarsi testa- 

 ceous ; space between the eyes at the base of the clypeus less than 

 the length of the second and third antennal joints. Male: 

 mesosternum nude ; mesepisternum finely punctate ; metano- 

 tum black ; fore femora yellow beneath. 



Westbrook, 30 August, 1904 (H. L. V.). 



Subgenus Crabro Fabricius (s. str.). 



Key to Species. 



1. Females r% 2 



Males S 



2. First transverse cubitus received before middle of radial 



cell 3 



First transverse cubitus received about middle of radial cell 4 



3. First joint of flagellum distinctly shorter than second; lateral 



margin of pronotum with a strong tooth argus 



First joint of flagellum distinctly longer than second; meso- 

 scutum shining, finely closely punctate . . . .' aequalis 



4. Dorsal aspect of propodeum very coarsely sculptured with 



strong longitudinal ridges; scape black provancheri 



Dorsal aspect of propodeum not coarsely sculptured, striae 

 incomplete and fine; clypeus and mandibles black. . .monticola 



5. First joint of flagellum not broadened to meet second; tibial 



shield brownish, covered with pale spots; scutellum and 



metanotum black argus 



First joint of flagellum broadened to meet second 6 



6. First joint of flagellum not hirsute beneath; tibial shield 



very large latipes 



First joint of flagellum with a bunch of pale, curved hair 

 beneath cribrellifer 



