42 THE CANADIAN ENTOMOLOGIST. 



Generic Characters of Myrmecophila : — 



Body ovate, greatly convex, apterous. Occiput entirely hidden by the 

 pronotum, vertex depressed. Eyes ocelliform. Furrows of the antennae 

 greatly impressed. Antennae as long as the body, thickest at base, apex 

 pointed. Pronotum large, wide, narrow in front, wide behind with the 

 front and hind margins usually straight, lobes deflexed but not contracted. 

 Meso- and meta-notum not differing from the segments of the abdomen 

 except in some instances where they are wider. Anterior feet small, sub- 

 compressed. Anterior tibise without tympanse, unarmed. Posterior 

 femorae greatly enlarged, dilate ovoid. Posterior tibiae shorter than 

 femorae, stout, compressed, with the upper margin ciliate, internal margin 

 with four movable spines, external margin with two spines, and with four 

 long, terminal spurs. Abdomen short, greatly depressed, and attenuate 

 or tapering. Cerci strong, as long as or longer than the abdomen. Ovi- 

 positor short and quite stout. The male differs from the female in its 

 more slender form and its smaller size. 



Myrmecophila Pergandei, n. sp. 



General form looking from above oval, smallest at the head. The 

 latter depressed, deeply sunken into the front margin of the pronotum. 

 Basal joint of the antennae very large and globular, with a few short 

 bristle-like hairs encircling the insertion of the second joint, remaining 

 joints gradually decreasing in size toward the apex. Antennae as long as 

 body, pale yellowish at base, remaining portion rufous. Eyes small, 

 black, composed of a group of ocelli-like cells, which are situated immedi- 

 ately behind the base of the antennae — in dried specimens partly concealed 

 by the front margin of pronotum. Anterior legs small, slightly compressed, 

 unarmed. Posterior femora greatly enlarged, compressed, ovate incras- 

 sate ; tibiae stout, also slightly compressed, shorter than femora, and fur- 

 nished with four movable spines on the inner and two on the outer edge ; 

 apex with four long spurs. Tarsi plain. Cerci stout, acuminate, slightly 

 thickest in middle, as long as the abdomen, quite hairy ; a trifle heaviest 

 in the male. Ovipositor slender and larger than usual, with the valves of 

 equal lengths, as- shown in the accompanying illustration (Fig. 4, a). 



Pronotum large, wide and greatly deflexed ; narrow in front and wide 

 behind ; front and hind edges straight. Meso- and meta-notum equal, 

 much larger than first abdominal segment. Color, ochraceous and pice- 

 ous. Front margin of pronotum and hind margins of thoracic and 



