380 Dr. J. L. Leconte 07i Coleoptera 



Dyslobus, Lee. 



I have associated under this name several species found in 

 Western North America which belong to the tribe Eremnini 

 of the Oxyophthalm Adelognath CurculionidaB, according to 

 the arrangement of Prof. Lacordaire. They differ from the 

 other genera known to me by the following assemblage of 

 characters : — 



Rostrum slightly dilated at tip, rather thick, flattened above, 

 feebly carinate, with the apical lobes divergent; postocular 

 lobes of thorax more or less ciliate, and very feebly developed, 

 though still quite apparent. The general appearance is that 

 of OtiorJiT/nchus, from which this genus differs by the form of 

 the eyes, narrowed and angulated beneath, by the less elon- 

 gated scape of the antennae, and the postocular thoracic lobes. 



To this genus belong : — 



Otiorhynchus segnis^ Lee. 



Dyslobus granicollis. 



Niger, equamulis griseis et fuscis dense vestitus et breviter brunneo 

 pubescens ; thorace latitiidine paulo longiore, antice vix angus- 

 tiore, lateribus rotundatis, apice et basi subtnincatis vix rotun- 

 datis, angulis omnibus obtusis, dorso transversim convexo, dense 

 subtilius rugose punctato et granulate ; elytris convexis, ovaHbus, 

 thorace duplo latioribus, apice valde declivibus, striis baud im- 

 pressis e punctis magnis compositis, interstitiis 3% 5=*, et 7* paulo 

 elevatis et maculis obscuris variegatis. 



Long. 10 millim. 



Vancouver's Island and Puget Sound (Mr. G. Davidson). 



The beak is a little longer than the head, not narrower than 

 the front, nearly parallel on the sides, very feebly dilated at 

 tip ; upper surface flattened, carinate from the base to between 

 the antennas, where the carina ends in an elongate fovea. 

 The antenna! grooves are short and oblique ; and under them 

 on each side is a strongly impressed oblique line, nearly 

 uniting in the gular transverse impression. The front is broadly 

 transversely impressed at the base of the rostrum. The scales 

 of the occiput are tinged with metallic colours. The prothorax 

 is scarcely one-half wider than the head, a little longer than 

 its width, broadly rounded on the sides, very feebly rounded 

 and nearly truncate at base and tip ; the surface is densely 

 rugosely punctured, and between the scales presents small 

 shining granules. The elytra are nearly twice as wide as the 

 thorax, and about twice as long as their width, oval, convex, 

 very declivous behind ; the stria; are comj)osed of large shal- 

 low punctures, not closely placed ; and the third, fifth, and 

 seventh intervals are shghtly elevated and darker in colour. 



