204 J. L, LECONTE, M. D. 



Very small dull reddish y.ellow, beneath dark brown ; prothorax coarsely 

 but not densely punctured, sides oblique, less rounded than usual ; elytra 

 with dusky suture, strise strongly punctured, entirely regular, inter3[>aces 

 slightly convex; prosternurn quadrate, truncate before and behind; 9 

 with the ventral fovea shallow, margin distinct in front, ill-defined 

 behind: J 5 2 mm.; Northern Illinois, Mr. F. M. Webster, one speci- 

 men; Va.* 39. striatiiliis u. sp. 



Unrecognized species^. 



C. (Bassareus) areolatiis Suffr., Linn. Ent. vi, ."^Ol, Texas. — Differs from 

 congestus by smaller size, and rectangular tooth of prothoracic flanks. 



C (Bassareus) egeuiis Suffr., ibid. 311, Delaware. — Probably a variety of 

 mavimifer. 



C luteolus Newm., Mag. Nat. Hist. 1840, 250, Florida. 



C. quadriforis Newm., Entomologist, 78, N. C. — Seems to resemble 

 ^-viacalatus, but the elytra are said to have the punctures "baud linea dis- 

 positis." Perhaps a distorted individual. 



1»4€HYBRA€IIYS Chevr. 



The species of this genus are numerous, and apart from the generic 

 characters are recognized by the outer striae of the elytra being usually 

 completely confused, and the inner ones tortuous or irregular, separated 

 by more or less sinuous and interrupted ridges. Rarely, however, 

 striatus and category 7, the strise are quite regular, and these added 

 to the dense punctuation of the prothorax, give the insect a strong 

 resemblance in appearance to Cri/ptocephalus SchreiOersu, etc. In this 

 case the difference in form of the prosternurn alone remains as a 

 generic character. 



There are certain mottled Ibrms of small size, varying in color 

 from black with white dots, to ochreous yellow with pale brownish 

 mottlings, which cannot be separated definitely into species without 

 farther observation of the limits of variation, and the habits of the 

 particular sets; fuller series collected at the same time and place are 

 needed to enable these forms to be studied with profit. I have been 

 unable to identify the nominal species described by Suffrian of these 

 sets, but have the authentic types of Melsheimer's and Haldeman's 

 species for comparison at any future time. 



As this table is intended solely for the identification of species, I 

 have omitted such minor details as the spots on the head, pygidium 

 and ventral surface, except where they seemed to be important for the 

 separation of closely allied forms. I have for the present left the 

 species under category 17 undefined, but a list of those which differ- 



* The epipleural lobes are less developed and the outer strise are more nearly 

 straight than in any other species known to me; the claws are quite simple as 

 in all the preceding species. 



