3.14 Coleopterological Notices, V. 



vergent and arcuate in posterior third ; humeri rounded to the prothorax, 

 exposed, each elytron very feebly, obliquely sigmoid at apex, the external 

 angles prolonged as usual ; disk convex, feebly, narrowly impressed on the 

 suture behind the scutellum. Abdomen not as long as the anterior parts, at 

 base three-fourths as wide as the elytra, and, at the tip of the third segment, 

 fully as wide as the latter. Legs long, slender, the posterior tarsi short, the 

 basal joint elongate. Length 3.0 mm. ; width 0.7 mm. 



Michigan. 



The description is taken from the male, which, throughout the 

 genus, has the sixth ventral plate relatively small and acutely tri- 

 angular in form. The female is paler, rather stouter and somewhat 

 more densely punctate. In both sexes, but especially in the female, 

 the pronotum is extremely obsoletely impressed along the median 

 line. The posterior tarsi, as usual, are about three-fifths as long as 

 the tibiae, with the basal joint fully as long as the next two, the 

 following three equal among themselves. 



£.°brendcli. — Slender, convex, piceous-black, the abdomen feebly rufes- 

 cent toward base ; legs throughout and antennae toward base dark rufous ; 

 integuments polished, finely, somewhat strongly, rather closely punctate, the 

 abdomen very sparsely so except at the base of the segments, the elytra 

 strongly and conspicuously but not very densely punctate ; pubescence rather 

 long and distinct, extremely sparse on the abdomen. Head fully as long as 

 wide, rather longer than the prothorax, the neck one-third as broad as the 

 width across the eyes, the latter moderate, at scarcely twice their length from 

 the base ; antennae long, the three basal joints subequal in length, the first 

 slightly thicker, fourth much longer than wide, tenth about as long as wide. 

 Prothorax nearly as in lacustris, the disk feebly impressed and more densely 

 punctate along the median line. Elytra two-fifths wider and scarcely percep- 

 tibly longer than the prothorax ; sides parallel, convergent and rounded 

 toward apex ; humeri rounded, exposed ; disk strongly convex, strongly im- 

 pressed on the suture behind the scutellum. Abdomen nearly as long as the 

 anterior parts, at base three-fourths as wide as the elytra, fully as wide as the 

 latter at the apex of the third segment. Legs long and slender ; tarsi normal, 

 the first joint of the posterior fully as long as the next two ; claws connate 

 throughout their length, rather shorter than usual. Length 3.0 mm. ; width 

 0.65 mm. 



Iowa (Cedar Rapids). Dr. E. Brendel. 



The extraordinary character relating to the tarsal claws is con- 

 firmtd by a careful examination of all the twelve tarsi of the two 

 males in my cabinet; otherwise, the species is perfectly normal, 

 differing from lacustris only in its more slender form, smaller pro- 

 thorax, smaller and especially shorter elytra, and relatively larger 



