210 DESCRIPTIONS OF NEW SPECIES. 



b. Disk of protborax convex not channelled, sparsely and finely 



punctured, elytra rounded at tip ; 



* Sides of head behind the eyes straight, oblique ; neck concave : 



with the front tibiae armed on the inner side with an obtuse 



tooth at the middle, outline concave from the tooth to the tip. 



Testaceous, elytra coarsely punctured, with the suture, dorsal vitta and 



side margin (the latter sometimes interrupted into spots) black ; quadri- 



vittata Linn, (fide Hald.). 13. DIRBCTA Newm. 



** Sides of head behind the eyes tumid, rounded, smooth, protho- 



rax more deeply constricted behind ; ( ?) 

 Black, with fine hoary pubescence, mouth and prothorax ferruginous. 



14. FALSA Lee. 

 c. Disk of prothorax more or less flattened behind, and prolonged 



or elevated each side into a tubercle ; elytra truncate at tip. 

 Prothoracic tubercles conical lateral ; black, elytra opaque, base and side 



margin and sometimes the suture bright red. 15. DISCOIDEA (HaJd.~). 

 Prothoracic tubercles dorsal obtusely rounded ; black, elytra shining, 

 more distinctly punctured, black, striped, testaceous, or fuscous, a. 

 Tubercles less developed, gibbula Lee. 16. PKOTEI'S (Kirby). 



C. A moderately stout but small species, with the front and mouth ex- 

 tremely long , the antennae inserted in front of the line joining 

 the anterior margin of the eyes ; prothorax campanulate, con- 

 stricted in front, wider and feebly constricted behind : tip of 

 elytra truncate. 



Black, elytra black, fuscous, or testaceous, sometimes with a dorsal vitta 

 and tip fuscous, strigilata Fabr., longiceps Kirby,fu!vi}>ennis Mann. 



17. PRATENSIS Latch. 



536. A. pinguis. Fusco-testacea, pallide pubescens, obesa, protho- 

 race latitudine breviore, lateribus postice parallelis, antice rotundatis, 

 apice angustiore constricto, coufertiin punctato, spatio dorsali prsecipue 

 postice Isevi ; elytris latioribus convexis, parce punctatis, punctis pos- 

 tice subtilioribus, versus basin autein irregularibus, vittis indistiuctis 

 sublaevibus relictis. Long. 9 mm. 



One specimen ; California, Dr. Horn. A very stout species, 

 shaped like A. bivittata, but with the sides of the prothorax 

 straight and parallel behind the middle, as in A. atra, and quite 

 distinct from them as from all others by the punctures of the 

 basal half of the elytra being arranged so as to give the appear- 

 ance of faint longitudinal stripes, of which the inner one runs 

 obliquely forwards towards the humerus, so as to tend to unite with 

 the others. The antennae and legs are dark piceous, the former 

 rather stout, with the 3d and 4th joints equal. 



