1907.] SPECIES OF CRYJ'TUCEri-lALIXE BEETLES. 837 



Length 3 millini. 



Rather short and broad ; the head impunctate ; eyes subtri- 

 angularly notched, nearly touching at vertex ; antenna? slender, 

 lower four joints testaceous, rest black, third and fourth equal, 

 elongate, terminal joints slightly widened. Thorax about one 

 half broader than long, basal margin about twice as wide as 

 anterior one, sides nearly straight ; surface entii-ely impunctate, 

 reddish-fulvous, anterior margin sliglitly flavous. Scutellum 

 trigonate, basal margin black. Elytra slightly narrowed towards 

 apex, without depression, finely and regularly punctate-striate, 

 the punctures slightly larger at anterior portion ; last two or three 

 interstices feebly convex ; colour similar to that of thorax, extreme 

 basal margin black. Under side and legs flavous. Prosternum 

 subquadrate, the lateral margins raised, base truncate. 



Hah. Bahia. 



Not unlike C bisidcatus Sufi", in coloration, but Avith entirely 

 flavous legs and finely, not coarsely punctured elytra, interstices 

 smooth. 



Cryptocephalus tucumanensis, sp. n. 



Flavous ; thorax nearly impunctate, j)ale brownish, sides, a. 

 central longitudinal band, and two obscure spots at base flavous ; 

 elytra very finely j)unctate-striate, flavous, an elongate sub- 

 quadrate band across suture extending below middle obscure 

 dark brownish. 



Length 1|- millim. 



Very narrowly elongate, subcylindrical, subopaque. Head 

 flavous with a brownish central band, impunctate ; eyes feebly 

 emarginate, widely separated at vertex ( § ?) ; lower three joints 

 of antennse flavous, rest wanting. Thorax scarcely twice as broad 

 as long ; sides nearly straight, but little narrowed anteriorly ; 

 surface microscopically punctured and granulate, flavous ; a broad 

 pale brown band each side near middle includes a small spot of 

 the ground-colour at the base. Scutellum narrowly elongate, 

 nearly black. Elytra twice as long as the thoi-ax, very finely 

 punctate-striate, with a few extra punctures below the shoulders ; 

 interstices flat, minutely granulate, the last one widened ; the 

 gTOund-colour pale yellow ; the humeral callus and an elongate 

 sutural band from base to below middle pale piceous. Below and 

 the legs entirely flavous. Prosternum longer than broad, feebly 

 emarginate at posterior margin. 



JIab. Tucuman, Argent, Rep. 



This extremely small species seems more nearly allied to C. mi- 

 serahilis Suff. than others, but is of difierent coloration and well 

 distinguished (as far as the single specimen before me admits) by 

 the sutural piceous elongate band, also by the almost invisible 

 puncturation of the thorax. 



In the La Plata Museiim and that of my own. The following 

 species from the same locality may possibly be a variety of this 

 one or represent the other sex. 



