OF AMERICA NORTH OF MEXICO. 101 



7 — 8. A. CALiFORNicus. — Nigro-piceus, vix ccerulescens, cinereo-pubescens, thorace confertissime punctato, 

 baud transverse, apice subito paulo angustato, vix constricto, linea longitudinali Igevi ; ely tris confertim 

 punctatis basi planiusculis, humeris prominulis. Long. -35. 



California : Mr. Pease. Body less thick than in A. nigripennis; dark piceous, with 

 a slight bluish reflexion; pubescent, with short cinereous hair; head densely- 

 punctured ; antennae longer than half the body, third and fourth joints equal, and a 

 little shorter than the fifth. Thorax densely punctured, with a smooth longitudinal 

 line ; not transverse, with the sides parallel to near the apex, where it is a little 

 narrowed and slightly constricted. Elytra nearly twice as wide as the thorax, two 

 and a half times as long as wide, truncate and flattened at base, sides nearly 

 parallel; punctures dense, gradually becoming smaller to the apex, which is 

 rounded. 



7 — 8 (bis.) A. SUB^NEUS. — Nigro-piceus, cinereo pubescens, thorace transverso, antice subito angustato, 

 constrictoque, lateribus vix angulato, linea longitudinali laevi, elytris aenescentibus convexis minus dense 

 punctatis. Long. -34. 



San Francisco, (California.) Very similar to the last, but the thorax is transverse, 

 and more suddenly narrowed in front ; it is a little narrowed behind, so that the sides 

 are very obtusely angulated ; the punctures of the elytra are larger and more distant, 

 becoming small at the tip, which is rounded ; the base is uniformly convex, and the 

 humeri less prominent. 



Vol., I., p. 331. STRANGALIA, add : 



21 — 22. S. MOLYBDiCA. — Coerulea, breviter cinereo-pubescens, capite thoraceque virescentibus subtiliter 

 confertissime punctatis, illo canaliculato, hoc longiusculo, antrorsum angustato, lateribus ante medium 

 paulo rotundatis, linea longitudinali abbreviata Isevi, elytris subtilius rugose punctatis, apice rotundatis. 

 Long. -25. 



San Francisco, April. Antennse black, fifth joint a little longer than the fourth. 

 I have two specimens, which agree perfectly with the one described, except in having 

 a red humeral spot. I am unwilling on this single character to found a new species. 



Vol. I., p. 340. Leptura bivittata....for Long. 2-5 read Long. -4. 



Vol. II., p. 6. The table is rendered inaccurate by the transposition of the fig. X from its proper place, to the same 

 line with division c, which it is needless to say includes all the succeeding groups as far as B. 



" 7, group VIII., for Cy phophorus read Cyrtophorus. 



" 9. Smileceras solitarium. I found fragments of this species in the valley of the Gila. 



" 9. To group 4 add: PERARTHRUS. 



Antennae 11-articulatae, corpore longiores, basi vix pilosellse. 



Mandibulsc non elongatae. 



Thorax subrotundatus, antrorsum angustatus, elytris arete conjunctus, dorso callosus. 



Mesosternum antice subito declive. 



Elytra postice angustata, apice fere truncata. 



Corpus punctatum, longius pubescens ; pedibus posticis elongatis. 



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