PROCEEDINGS, 1917. 31 



These insects are noeturnal in habit and are seldom noticed by the casual observer. 

 They are chiefly found beneath old logs and stumps in damp woods or beneath stones. 

 etc., by woodland streams, in which places they are usually found in pairs. 



The majority'of the species evidently reach maturity in the fall as most of the 

 adults are found then. Nymphs have been taken during the summer and one in the 

 late fall. The winter is presumably passed both in'the egg and nymphal stages. 



The males are easily separated by the size and number of spines on the hind fe- 

 mora as well as by the curve present in the hind tibia. The females are less readily dis- 

 tinguished, but as they are usually found in pairs they should be placed together in the 

 collection. 



Only two species have been taken by the writer in the province; these may be 

 separated by the following key: 



KEY TO SPECIES OF CEUTHOPHILUS. 



A. Hind femora of male with about 15 small unequal spines on outer lower carina. 

 Hind tibia with a decided curve in the basal third maculatus. 



B. Hind femora of male with about 25 minute teeth crowded together on the 

 outer lower carina. Hind tibia without decided curve terrestris. 



Ceuthophilus maculatus (Say) Fig. IV. 



General color: dorsal surface dark sooty brown, often with a median stripe of 

 lighter brown on the pronotum. The last two thoracic segments and the abdominal 

 segments mottled with spots of lighter brown. Ventral surface yellowish brown. 

 Antennae and legs light brown. Hind femora crossed with narrow, dark brown lines 

 running in parallel rows. 



Head with vertex bent sharply downward, fastigium ending in a sharp point be- 

 tween the bases of the antennae. Front short and rounded, mandibles well developed. 

 Pronotum with both anterior and posterior margins truncate; disk rounded later- 

 ally. Anterior femora grooved on lower surface, inner carina armed with one long spine 

 on apical fourth. Middle femora grooved, with both carinae armed with one or more 

 spines; tibia armed both in front and behind. Posterior femora, thick, heavy, under 

 surface grooved, outer carina with about 15 rather course spines irregularly placed; the 

 inner carina with about the same number of smaller spines, femora of female unarmed. 

 Tibia with decided curvature in basal third and armed with many long spines, the in- 

 terspaces crowded with smaller spines; distal end bears four pairs, one pair extremely 

 I ong, the inner one being the longer; tarsal claws with no pads between them. 



This insect does not appear to be very common in the province and has only been 

 recorded from a few localities, j The writer has found it beneath old boards, stones, and 

 in damp places, and has'also taken it beneath the bark of an old tree. Adults were taken 

 in the fall, nymphs during the summer and fall. 



