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



STENOPELMATIN^. 



The insects belonging to this sub-family are commonly called 

 " stone-" or " camel-crickets." One genus is represented in 

 Connecticut. 



Ceuthophilus Scudder. 



Wingless LocustidcE, medium or large in size, with a thick 

 body. Head large, oval, deflexed, extending backward between 

 the fore legs. Vertex without tubercles. Eyes somewhat pyri- 

 form in shape, widest at the top, and situated close to the base 

 of the antennae, which are long, slender, and cylindrical. Maxil- 

 lary palpi long and slender, the first joint longest, grooved be- 

 neath at the apex. Pronotum short, prosternum unarmed. Hind 

 femora stout, turned inward at the base, channeled beneath, 

 with the margins of the channel either serrate or spined in the 

 male, nearly smooth in the female. Ovipositor well developed, 

 slightly upturned at the tip. Cerci of male long and slender, 

 usually thickly clothed with hair. The members of this genus 

 are nocturnal in habit, and are usually found in damp places 

 under stones, bark of stumps, logs, and in damp, dark cellars. 

 Uusually but one or two pairs are found together. Our col- 

 lection contains very little material in this genus, and the follow- 

 ing keys and descriptions are mainly taken from other papers. 

 The females are very hard to identify, and the keys are for 

 distinguishing the males. The female is similar in color to the 

 male, and as the species are usually found in pairs, these should be 

 placed together in the collection. 



Key to Species. 



1. Large species ; hind femora more than 20 mm. in length 2 

 Smaller species; hind femora rarely more than 16 mm. 



in length 3 



2. Hind femora less than four times as long as broad ; 



hind tibiae more than one-tenth as long as femora, 



more or less sinuate at base in old males gracilipes 



Hind femora more than four times as long as broad ; 

 hind tibiae scarcely more than one-tenth longer than 

 femora, straight at base grandis 



3. Fore femora but little, if any, longer than the pronotum 4 



