collected in Vancouver's Island. 385 



however, belong to a different group, having the elytra biden- 

 tate at tip. This species differs conspicuously from L. cordi- 

 fera and its allies by the tubular constriction of the apex of 

 the thorax being very well marked and longer than usual, and 

 by the base being less prolonged at the middle and more 

 broadly bisinuate ; the posterior impression extends entirely 

 across the base, and is very strongly marked and nearly 

 straight. 



In the name of this fine and conspicuous species I desire to 

 commemorate the labours of Messrs. Henry and Joseph 

 Matthews, who, inspired by the same love of science to whicli 

 we owe many valuable memoirs in entomological literature by 

 their brother, the Rev. A. Matthews, have with great zeal ex- 

 plored the wildernesses of British Columbia and Vancouver's 

 Island, and, in fact, have obtained the best material yet pro- 

 cured for a study of the distribution of species in those regions, 

 which remain, in a scientific sense, the most unexplored por- 

 tions of North America. 



Atimia, Hald. 

 ^ Atimia dor satis. 



Nigro-picea, pube brevi depressa fulvo-sordida dense vestita ; thorace 

 latitudine vix breviore, quadrato, ad apicem subito angustato, 

 lateribuB baud rotundatis, modice punctato, vitta dorsali lata sub- 

 nuda ; elytris antice parce punctulatis, vitta denudata sub- 

 suturali pone medium extrorsum bidentata, et sensim angustata 

 notatis. 



Long. 10 millim. 



Vancouver's Island. A. specimen was also collected in 

 Southern California by Dr. G. H. Horn. 



This species is very closely related \o A. confusa {Clytus 

 confusus, Say, A. tristis, Hald,), but differs by the pro thorax 

 being less transverse, almost quadrate, and scarcely rounded 

 at the sides, except near the apex, where it is suddenly nar- 

 rowed : the arrangement of the denuded spots is somewhat 

 similar ; but the sides of the thoracic vitta are straight and the 

 elytral spots are confluent, forming a vitta extending nearly 

 to the tip, with two external dilatations — one at the middle, 

 the other at the extremity ; the tip of the elytra is more 

 squarely truncate, and the general form a little less robust 

 than in A. confusa. 



Ann. tl Mat/. N. Hist. Ser. 4. Vol.W. 28 



