40 Bulletin of the Brooklyn Entomological Society Vol. XII 



the outer carina of the juxta-sutural sulcus is mentioned by Dr. 

 Horn in bonvouloiri. Of this species I have two specimens which 

 have this carina distinctly and somewhat suddenly obliterated be- 

 hind, not differing otherwise from a specimen with entire carina. 



Family Elateridse. — Drasterius thoracicus n. sp. Moderately elongate ; 

 finely pubescent ; color reddish brown, antennae and legs paler ; markings 

 as in dorsalis (elegans)* and amabilis. Head black, moderately closely 

 and not coarsely punctate. Antennae note quite as long as head and pro- 

 thorax. Prothorax about as long as wide; sides moderately arcuate in 

 front; hind angles rather long and acute, not divergent and with an acute 

 carina ; surface moderately coarsely punctate, punctures well separated. 

 Elytra about twice as long as prothorax ; sides narrowed in front and 

 behind ; striae distinctly impressed and with moderate punctures ; intervals 

 sparsely, somewhat granulately punctate. Prosternum rather sparsely punc- 

 tate at middle, punctures coarser at sides and near base; side pieces more 

 coarsely punctate than prosternum ; the first four ventral segments not 

 densely punctate, the punctures at sides coarser than at middle; last ventral 

 segment's rather densely punctate. Penultimate tarsal joint scarcely lobed 

 beneath. Length 5 mm. Southern Illinois. 



One specimen of this peculiar little species in the collection of 

 the late Ottomar Dietz. It is readily distinguished from any of 

 our species by having the sides o'f the elytra narrowed in front 

 and behind, which gives the prothorax the appearance of being 

 wider than the elythra though the prothorax is not wider than the 

 elytra a little above middle. 



Drasterius subornatus n. sp. Rufo-testaceous ; antennae, legs and palpi 

 paler ; elytra with a rather indistinct postscutellar darker cloud and a more 

 or less undulated subapical black fascia ; pronotum with a faint apical 

 darker cloud, which is absent in some specimens. Pubescence grayish 

 white and a Httle longer than in dorsalis. Head moderately coarsely, not 

 densely punctate; antennae a little longer than the head and prothorax, 

 third joint a little longer than second and both slightly longer than fourth. 

 Prothorax a little longer than wide; sides feebly arcuate, almost parallel 

 behind ; basal angles slightly divergent and carinate ; punctuation moder- 

 ately coarse and not very close, punctures nearly equal over the entire sur- 

 face. Scutellum flat. Elytra about twice as long as prothorax; sides 

 feebly arcuate; apices conjointly rounded; striae at base scarcely impressed, 

 punctures moderate; intervals flat and finely, sparsely punctate. Under- 

 side rather coarsely punctate, the first few abdominal segments more finely 



* According to Champion, Biol. Cent. Am. Col., Vol. HI, pt. i, p. 365 

 (footnote). Say's dorsalis is wrongly placed as synonym of elegans. The 

 latter is West Indian and distinct from the North American species. 



