NORTH AMERICAN COLEOPTERA. 49 



A. floridannin n. sp,— Black, form rather slender. Head as wide as long, 

 scabrous, puiietiite, and finely excavate between the eyes; the latter are small and 

 prominent. Antennae long, basal joint exceeding second and third; thorax punc- 

 tate, opaque, impressed line distinct, elytra with humeri but little prominent, 

 striae line, punctures obsolete, intervals wide, flat and smooth. Length 2 mm. 



Hah.—Fh., Cal., Ariz., la., D. C. 



Single specimens only from each of the above localities, and present- 

 ing nothing peculiar. 



A. obesum n. sp. — Black, tibiae sometimes piceous, form more robust. 

 Head finely punctured and scabrous, eyes scarcely prominent, antennae as before; 

 thorax slightly widening at middle, moderately punctured, with impressed line 

 distinct; elytra broadly ovate, nearly as wide at middle as long, humeri evident, 

 striae distinctly punctured, intervals rather narrow, scabrous and punctate. 

 Length 2 —2.5 mm. 



Hah.— m^h., Tex. 



A few specimens only received, characterized by the very robust body 

 and rather elongate head and thorax. Easily distinguished by super- 

 ficial comparison from the preceding, and by size from the following. 



A. parvnlum n. sp. — Bronze or brassy black, sometimes deep shining 

 black. Head rugose and canaliculate Vjetween the eyes, the latter scarcely promi- 

 nent, antennae as before ; thorax but little longer than wide, else as before, but 

 more grossly punctured : elytra broadly ovate, but less obese than in the preceding, 

 humeri small, striae distinct, punctures obsolete, intervals rather narrow, convex. 

 Length 1.5 mm. 



ILih. — Middle States. 



The aeneous lustre and small size will serve to distinguish this species 

 from its near neighbors. 



A. atripes n. sp. — Black, glabrous, form robust. Head broad, ejes promi- 

 nent, liead finely rugose, front tri-sulcate. Thorax about as wide as long, sliglitly 

 coarctate at base and tip, sides slightly rounded, with large, shallow, closely set 

 punctures. Elytra broad, sides nearly parallel to middle, striae deep, distinctlv 

 puiu'turcd, intervals moderate, flat and punctured. Length 1.2J — 1.5 mm. 

 /A/A.— Ga., Fla., Cal. 



This may possibly be the A. nodirostre Grerst. Stet. Ent. Zeit. 1854, 

 241. His species is from Florida, and the description agrees tolerably 

 well with this insect, but the rostrum is not at all dilated and some other 

 details do not agree, and T prefer therefore to consider this :i.«< a new 

 species. 



A. cribricolle Lee. Pac. R. R. Expl. and Surv. Ins. 53 : poro.ticoUe Gem. 

 Col. Hefte viii 122. — Entirely black, form robust. Head and thorax elongate, dis- 

 tinctly longer than wide, and grossly punctured, antennae as usual. Elytra 

 moderately ovate, widest behind middle, humeri distinct; striae fine, superficial, 

 obsoletely or distinctly puncture<l. intervals wide, flat and punctate. Length 

 2 — 2.5 mm. 



TRANS. AMER. ENT. SOC. XI. (13) JANIARV, 1 8S4. 



