THE CANADIAN ENTOMOLOGIST. 219 



segment with a lobe-like ])ubescent tumidity at middle of hind margin ; 

 sixth segment slightly sinuate behind, seventh subtruncate or broadly 

 rounded. In the female the first three dorsals are shorter, scarcely longer 

 than the mesonotum, the fourth to eighth longer and subequal, thj 

 ventrals subequal, the first two more membranous, the eighth narrower 

 and rounded behind. 



Much attention has been given to the relations of Ignoius with other 

 Coleoptera, and it is hoped later to offer some of the considerations 

 bearing on the subject. The structure and habits of the larva make it 

 almost impossible to resist the conviction that it is Dermestide, but the 

 loose-jointed imago with its long slender legs and antennae in the male 

 seem very far from the compact- Dermestide type, the only immediately 

 obvious character suggesting afiinity consisting in the presence of an 

 ocelhis. This is so rare among Coleoptera as to be very suggestive. 



Ignotus cenigmaticus, n. sp. 

 Male. — Elongate, a little wider behind, testaceous, the head, 

 prothorax, metasternum and sometimes the tips of the elytra somcvhat 

 darker ; abdomen more or less piceous; thinly clothed with pale prostrate 

 hairs, somewhat condensed on the basal two joints of the antennae, whole 

 surface coriaceous and feebly shining. Head narrowed arcuately behind, 

 and slightly constricted at its insertion with the prothorax, the latter wider 

 than long, much narrowed anteriorly, sides arcuate to base, v.'here they are 

 minutely inflexed, with blunt right angles, the anterior ones rounded, 

 truncate before and behind ; sides of the pronotum narrowly inflexed, with 

 a faintly indicated demarcation between theni and the flanks ; upper 

 surface feebly convex, more or less impressed each side, base indistinctly 

 margined. Elytra shorter than abdomen by one or two segments 

 separately rounded at tips and somewhat dehiscent. Length, 2-3 mm. 



Female. — Wingless, larviform. Elongate, nai rowed towards each 

 extremity, testaceous, thinly dotted with paler hairs, which are a little longer 

 and more bristling along the middle of the sides; surface somewhat 

 coriaceous, feebly shining. The prothorax more transverse than in the 

 male, and more evenly convex, with no trace of basal margin. Abdomen 

 with subequal segments, the last one broadly rounded behind dorsally 

 and ventrally. Length, 2.7 mm. 



