140 



NORTHERN ZOOLOGY. 



(190) o. * Trichius (Gymnodus) rugosus. Wrinkled Gymnodus. 



T. G. ( rugosus j nigro-piceus, subnitidus ; prothorace canaliculate), ulrinque obtusangulo, cum capite confluenter punctato ; elytris 



confluenter rvgosis. 

 Wrinkled T. Gymnodus, nigro-piceous, rather glossy, prothorax channelled, obtusangular on each side, with the head 



confluently punctured : elytra contiuently wrinkled. 



Length of the body 10^. — 13 lines. 



Taken in Nova Scotia by Dr. Mac Culloch and Capt. Hall. 



DESCRIPTION. 



Body rather glossy, dark pitch-colour, naked above with a few scattered hairs on the underside 

 and on the legs. Head above plane, thickly covered with impressions and punctures that anastomose 

 and run into each other, in some specimens leaving here and there some elevated, levigated, narrow 

 spaces: nose anteriorly transverse, reflexed : prothorax with a longitudinal posteriorly abbreviated 

 channel; sides obtusangular; surface covered, less thickly in the disk, with large, and often conflu- 

 ent, punctures : scutellum an isosceles triangle, channelled, with a few scattered large punctures on 

 each side : elytra indistinctly furrowed, confluently and irregularly wrinkled, wrinkles marked with 

 shallow indistinct punctures, interstices elevated : cubit acutely tridentate : podex transversely irre- 

 gularly acuducted. 



(191) 6. Trichius (Gymnodus) foveatus. Impressed Gymnodus. 



T. G. (foveatus) piceus, subnitidus ; elytris dilutioribus, aneo-tinctis ; vermiculatim confluenter rugosis ; prothorace confluenter 



punctato, canalicidalo, utrinque subfoveato : capite inter oculos profunde foveato. 

 Impressed T. Gymnodus, piceous, somewhat glossy ; elytra pale, a little bronzed, wrinkled, wrinkles contorted like worms 



and confluent ; prothorax confluently punctured, channelled, somewhat impressed on each side ; head with a 



large deep impression between the eyes. 



Length of the body Hi lines. 



4 



Taken in Nova Scotia by Capt. HalL 



DESCRIPTION. 



Near the preceding species, but perfectly distinct. Body nearly naked, somewhat glossy, of a dark 

 pitch-colour. Nose and front between the eyes with a very deep and large impression, the bed of 

 which is acuducted in circles with a minute puncture in the centre of each ; the rest of the head is 

 confluently punctured ; above the bed of the antennae the front rises into a rather lofty levigated 

 prominence : the prothorax is shaped like that of G. rugosus, but is rather less obtusangular, the 

 channel is deeper, with its sides more elevated, and there are one or two slight impressions between 

 it and the margin ; the punctures on the disk are rather more numerous : the elytra are paler than 

 the rest of the body and a little bronzed, the wrinkles of the surface are more vermiform than in 

 the species just named, without any punctures, and the appearance of furrows is less distinct : the 

 podex is distinctly punctured and scarcely acuducted ; and the cubit is sinuated rather than dentated, 

 the three prominences being extremely obtuse. 



