THE LAMELUf'OKX BEETLES. 



not fimbriate, grooves short, lateral." Another species has been 

 since described by Horn and ascribed to the genus, in which the 

 head is finely and sparsely punctate and the thorax not grooved. 

 Both species occur in Indiana. 



KEY TO SPECIES OF PLEUROPHORUS. 



. Clypeus granulate; thorax sparsely, irregularly and coarsely punctured; 



front femur emarginate beneath. 1741. C^ESUS. 



an. Clypeus finely and sparsely punctate; thorax very regularly, not dense- 



ly punctured; front femur entire. 1742. VENTRALIS. 



1741 (5479). PLEUROPHORUS C/ESUS Panz., Fauna Germ., 35. 



Elongate, subcyliudrical, slender. Piceous black, shining ; legs reddish- 

 brown, antenna? paler. Clypeus broadly emarginate at middle, sparsely and 

 rather coarsely granulate-punctate in front. Thorax one-fourth wider than 

 long, slightly broader in front, hind angles distinct but obtuse ; median im- 

 pressed line with deep, coarse punctures; a large rounded pit at middle of 

 each side, smooth between the pit and margin. Elytra a little narrower 

 than thorax, sides parallel ; stria? deep, punctate, the first three only entire 

 and reaching apex; intervals slightly convex, creuate on their inner border. 

 Second ventral segment carinate at middle. Length 3 mm. 



Lake and Posey counties, rare; a single specimen from each. 

 April 25-July 4. Taken from a pathway along the border of woods. 

 Occurs abundantly in Europe and probably introduced. 



1742 (10,181). PLEUROPHORUS VENTRALIS Horn, Trans. Amer. Ent. Soc., 



XIV, 1887, 92. 



Elongate, parallel, semicylindrical. Piceous, shining ; legs reddish-brown, 

 autennte pale. Clypeus broadly truncate. Thorax one-fourth wider than 

 long, margin narrowly flattened, hind angles obtuse, surface sparsely and 

 regularly punctured, the punctures gradually finer towards sides and apex. 

 Elytra a little narrower at base than thorax ; strife broad and deep, with 

 large shallow punctures; intervals strongly convex, smooth. First three 

 ventral segments plainly carinate at middle ; fourth and fifth emarginate 

 at middle of front margin. Length 4 mm. 



Marion and Posey counties; scarce. April 22-November 17. 

 Probably hibernates beneath partly buried logs in low open woods, 

 as specimens were taken on the later date in such situations. Read- 

 ily known from all others of the tribe by having the first five strias 

 of the elytra reaching the apical margin and by the carinate and 

 emarginate ventral segments. 



RhyssemU'S scaber Hald., oblong, piceous, legs brownish, anten- 

 nas pale, intervals of elytra with a row of small tubercles on the 

 inner side, length 3.5-4 mm., "'occurs at the margin of streams from 

 the Middle States to Texas." 



