372 Dr. J. L. Leconte on Coleo_ptera 



New or remarkable Species. 



Cycheus. 



Cychrus angnlatuSj Harris, Bost. Journ. Nat. Hist. 



The recovery of this remarkable species, the type of which 

 has disappeared, enables me to add some characters to those 

 briefly indicated by Dr. Harris. The thorax is much more 

 polished and convex than in any other species found on the 

 Pacific slope of America, and is very narrowly margined and 

 deej)ly channelled ; the sides are distinctly angulated in front 

 of the middle, oblique towards the tip, strongly sinuate to- 

 wards the base, the angles of which are rectangular and pro- 

 minent ; the transverse impressions are deep, the basal ones 

 well marked, not punctured. The elytra are elongate-oval, 

 narrower than in ventricosus, but sculptured in nearly the 

 same manner, with sixteen deeply imjjressed, closely punctured 

 striae, of which the two outermost are confused. 



The head is obtusely elevated in the middle, and narrowly 

 carinate at each side above the insertion of the antennae, the 

 carinaa extending along the superior margin of the eyes, and 

 bending around their hind margin ; the first joint of the an- 

 tenna is stouter than in C. ventricosus, but neither as thick 

 nor as long as in C. cristatus. The feet of the specimen (a 

 female) are proportioned as in C. ventricosus. 



Cychrus tuberculatus, Harris, Bost. Journ. Nat. Hist. 



The specimen submitted to me by Mr. Matthews is much 

 larger (23 millims. long) and stouter than those in my collec- 

 tion, and is therefore evidently a female : this species is tliere- 

 fore to be placed among those in which the anterior tarsi are 

 not dilated in the male nor furnished beneath with brushes of 

 hair. It differs from all the other species, not only by the 

 peculiar sculpture (scabrous upon the head and thorax, tuber- 

 culated upon the elytra), but by the antennae being shorter, 

 scarcely more than half the length of the body, with the first 

 and third joints equal in length, and the second but little 

 shorter ; the labrum is scarcely longer than wide, and less 

 deeply bilobed than usual. The palpi of the male are more 

 broadly securiform than those of the female. 



Platynus. 



Platynus ovipennis (Mann.). 



This species, rare in California, has not been heretofore 

 found in the more northern regions. It is easily distinguished 



