294 GEO. H. HORN, M. D. 



several years ago, seemed very unsatisfactory, but ou resuming it for the 

 completion of the present work, I have not modified the notes made at 

 that time. 



ill. porcata Mels. — Black, without lustre. Vertex distinctly silicate. Thorax 

 quadrate, sides slightly arcuate, surface cribrate. Elytra nearly parallel, each 

 distinctly tricostate, the intervals biseriately punctured, except between the sec- 

 ond and third, in which four rows of punctures are observed at the apical fourth, 

 becoming confused at the base, margin not serrate. Length .12 inch; ; : i millim. 



By its slender form this species resembles a Charistena, but the tibiae 

 are straight and gradually broader to tip. 



Occurs from Pennsylvania to Illinois, but rare. 



HI. molilalia n. sp.— Form moderately robust, black, without lustre. Ver- 

 tex distinctly sulcate. Thorax slightly transverse, not wider behind, sides mod- 

 erately arcuate, disc convex, coarsely but very regularly punctured. Elytra 

 distinctly tricostate, the intervals between the costae with a double series of coarse 

 punctures, that between the two outer costae with four rows of punctures, distinct 

 near the apex and separated by a slight costa, confused near the base. Fourth 

 tarsal joint much longer than the lobes of the third. Length .10 inch ; 2.5 millim. 



This species and the next agree in having the fourth tarsal joint nearly 

 twice as long as the lobes of the third. The antennae are also shorter 

 than usual in the genus and the terminal joints more decidedly capitate. 



Occurs in Montana. 



HI. Melsheimeri Cr. (Odontota Hardyi Ct\). — Beneath piceous, above red- 

 dish yellow, maculate. Vertex sulcate. Thorax nearly quadrate, sides feebly 

 arcuate, disc convex coarsely and deeply punctured, usually a median smooth 

 callus and a vague impression on each side at base, color sometimes uniformly 

 reddish yellow, occasionally maculate with piceous spots. Elytra sculptured as in 

 the preceding species, color reddish yellow, maculate, with piceous spots arranged 

 in oblique series, sometimes confluent in oblique fasciae. Legs reddish yellow. 

 Fourth tarsal joint elongate. Length .12 inch; 3 millim. 



Occurs in the Atlantic region, also in California. 



The characters used for the separation of the genera of Hispidae are 

 for the most part feeble. These two species are probably as much en- 

 titled to separation as a distinct genus as Octotoma or Charistena, but in 

 a fauna like our own in which the representation is limited there seems 

 little use in multiplying names. 



ODONTOTA Chevr. 

 The generic name here adopted is chosen rather in deference to the 

 limited tradition of the science in this country, than from a conviction 

 that it will ultimately prevail. In the group Cephalodontides, as defined 

 by Chapius, four genera tire given in which the antennae have the eleven 

 joints quite distinctly separated, these are Odontota, Cephalodonta, Char- 

 istena and Auoplitis. The first is distinguished by the prominence of 



