HELOPS. 331 



h. Femora not fringed beneath : sides of thorax not 

 sinuate before base. 



Upper-side brown or black-brown, with bronze reflec- 

 tion ; under-side red-brown. Thorax somewhat broader 

 than long, base bisinuate, sides with a narrow raised border, 

 rather finely punctured. L. 3| — 4^ 1. Common. 



H. striatus, Fourc. 



CISTBLIDAE. 



A, Last joint of maxillary palpi much larger than third ; 

 tarsal claws usually with five or six teeth. 



Mandibles slightly bifid at apex ; abdomen with five 

 ventral segments (at least in female). 



a. Anterior coxae not contiguous. 



Antennae more or less long, threadlike or sliglitly saw- 

 like, third joint variable in length. Cist el a, Fab. 



h. Anterior coxae contiguous. 



Antennae a little shorter than half the body, threadlike, 

 third joint at least as long as fourth ; body more slender 

 than in Cistela, eyes more prominent. 



Mycetochares, Latr. 



jB. Last joint of maxillary palpi not much larger than 

 third ; tarsal claws usually with from nine to twelve 

 teeth. 



Mandibles entire at apex; abdomen with six ventral 

 segments. 



a. Posterior angles of thorax right angles. 



Antennae at least as long as half the body, slender, 

 threadlike or slightly thickened, third joint as long, or 

 nearly so, as fourth ; last joint of maxillary palpi cut very 

 obliquely at apex ; reflexed margin of elytra continued 

 nearly to sutural angle. Cteniopus, Sol. 



h. Posterior angles of thorax rounded or at least obtuse. 



Antennae shorter than half the body, threadlike, apical 

 half a little thickened, third joint longer than fourth ; last 

 joint of maxillary palpi cut less obliquely at apex than in 

 Cteniopus. Omophlus, Sol. 



