INSECTS — COLEOPTERA. 63 



fortius marginato, subito constricto et breviter tubulato; elytris sat dense postice subtilius 

 pnnctatis, parallelis postice obtusis. Long. "5. 



One specimen, found at Sacramento by Mr. Wittick. Eesembles the preceding, but tbe form 

 of the thorax is very different. 



A. suhcyanea, nigra parce pubescens, capite thoraceque minus dense punctatis, hoc linea 

 dorsali sublaevi, latitudine baud breviore, antrorsum subangustato, lateribus antice paulo 

 rotundatis, ad apicem constricto breviter tubulato ; elytris antice fortiter minus dense, postice 

 subtilius punctatis, obscure cyaneis, parallelis postice obtusis. Long. "41. 



San Francisco, Mr. Child. Also related to the preceding and to the next species, but differs 

 by the thorax being less densely punctured. The elytra are more coarsely and less densely 

 punctured towards the base than in A. lugens and fusca, resembling in this character A. sub- 

 aenea Lee, from which it differs by the thorax being broadly rounded, and not angulated at 

 the sides. 



A. tumida, cyaneo-atra pubescens, capite thoraceque confertim punctatis, hoc linea dorsali 

 laevi, latitudine breviore, convexo, lateribus postice parallelis, antice valde rotundatis, ad 

 apicem valde constricto et tubulato ; elytris antice fortiter minus dense, postice subtilius punc- 

 tatis, a basi jjaulo angustatis postice obtusis. Long. '42. 



One specimen, San Francisco, Mr. Child. The thorax is formed as in A. lugens, but the 

 elytra are punctured as in A. suhcyanea. 



ToxoTUS Serv. 



T. flavo-lineatus, niger tlavo-pubescens, thorace antice posticeque valde constricto, nitido 

 parcius punctulato, canaliculato, lateribus tuberculo magno acuto armatis ; elytris a basi 

 angustatis, thorace duplo latioribus dense punctulatis et rugosis, margine a basi fere ad apicem 

 vittaque utrinque dorsali postice evanescente antice abbreviata ornatis ad apicem oblique sub- 

 truncatis. Long. I'O. 



Lee. Proc. Acad. Nat. Sc. 7, 18. 



One specimen, found by Dr. Coojjer on the journey from Vancouver to Yokolt Plain. The 

 elytra on each side of the yellow discoidal vittae are marked with a distinct elevated line. 



T. spurcus, testaceus, supra parce subtiliter pubescens, capite canaliculato, subtiliter thorace 

 evidentius rugose punctate, hoc canaliculato latitudine paulo longiore antrorsum angustato, 

 utrinque transversim valde impresso, lateribus spina valida acuta armatis ; elytris thorace duplo 

 latioribus parallelis postice obtusis spina brevi suturali armatis, antice fortius postice subtilius 

 punctatis, gutta submarginali ad medium strigisque duabus posticis nigricantibus. Long. '96. 



Steilacoom, one specimen, Mr. Gibbs. Of the same form as T. Schaumii Lee, but the elytra 

 are not obliquely truncate at tip. The elytra of the male are therefore probably slightly nar- 

 rowed from the shoulders. The fourth joint of the antennae is a little shorter than the third, 

 and one-half as long as the fifth. 



Leptura Linn. 

 L. vitiosa, nigra, tlavo-pubescens, capite rufo-variegato, thorace confertim punctate, latitu- 

 dine breviore antrorsum angustato, lateribus subangulatis biisique subito depressa testaceis, 

 angulis posticis productis, disco nigro subcanaliculato, postice utrinque oblique impresso ; elytris 

 punctatis, flavis macula laterali ad medium apiceque late nigris, a basi angustatis ad apicem 



