514 SERRICOENIA. 



I*. Elytra (in typical form) with alternate lines of light and dark 



pubescence : length 5-6 millim alternus. V 



d". Marginal carina of the prothorax incomplete or interrupted. 

 W. Pubescence of the upper surface decumbent. 



m*. Prothorax very elongate, much longer than broad ; second and 



fourth elytral interstices with a line of darker pubescence . . . quadrilineatus. 

 n*. Prothorax about as long as or a little longer than broad. 

 m 5 . Elytra elongate. 

 J 9 . Prothorax testaceous, with a black cruciform patch ; elytra 

 usually with the suture and a submarginal stripe of paler 



pubescence cruciatus. 



k 6 . Prothorax unicolorous or without definite markings, moderately 

 closely punctured : pubescence uniform. 

 c 7 . Basal incisures of the prothorax deep : body moderately 



broad incallidus. 



d 7 . Basal incisures of the prothorax shallow : body narrow . . monticola. 

 n°. Elytra moderately elongate or rather short. 



Z 6 . Elytral pubescence not paler along the suture and at the sides. 



e" 7 . Prothorax closely and rather finely punctured mexicanus. 



f. Prothorax densely and more coarsely punctured .... guatemalensis. 

 m 6 . Elytral pubescence usually paler along the suture and at the 

 sides ; prothorax dull, very densely punctured ; elytra 



attenuate opacicollis. ^ 



i"'. Pubescence of the upper surface semierect hirsutus. 



b. Antennae with the third joint slightly shorter than the second ; hind angles 



of the prothorax not carinate. 



c'. Body oblong- or elongate-oval; pubescence moderately close; prothorax 



densely punctured, with the hind angles divergent and the marginal 



carina usually interrupted ; elytra with the suture and sides clothed with 



paler pubescence. 



e". Elytral interstices not rougher at the base mixtus. 



/''. Elytral interstices rougher at the base pauwillus. 



a'. Body narrow, subparallel, brown; pubescence sparse and uniform; pro- 

 thorax with the hind angles not divergent and the marginal carina 

 obliterated anteriorly : length 5| millim angustatus. 



1. Agriotes sublineatus. (Tab. XXII. fig. 17.) 



Elongate, convex, shining; black, the prothorax and propleurae obscure rufous; the head and prothorax 

 sparsely, and the scutellum, elytra, and under surface thickly, pubescent, the pubescence yellowish- 

 cinereous, that on the outer alternate elytral interstices blackish, the second and fourth interstices to the 

 middle, and the third also for some distance, with blackish pubescence. Head rather sparsely, finely 

 punctate ; antennse not quite reaching the hind angles of the prothorax, joint 3 longer than 2, as long 

 as, but narrower than, 4. Prothorax considerably longer than broad, rounded at the sides, the latter 

 converging in front and sinuate behind ; the hind angles long, stout, acute, and divergent, sharply 

 carinate ; the surface sparsely, finely punctate, deeply canaliculate behind, and with a smooth median 

 line ; the base with a short deep incisure on either side ; the marginal carina distinct throughout. 



