DESCRIPTIONS OF NEW SPECIES. 75 



form, some (possibly the representatives of the strong minded 

 class in our own species) resemble very closely the male in form ; 



usually, however, the thorax is QOt wider than the elytra, and tie- 

 latter are parallel on the sides, and obtusely rounded posteriorly ; 

 the color of the under surface is sometimes fuscous, with the 

 sides of the pectus and abdomen testaceous, but sometimes lie- 

 comes entirely testaceous. The testaceous margin and usual 

 bands of the elytra are so dilated that the ground color appears 

 testaceous, with three irregular angulated fuscous fascia-. 



279. H. laMatllS. Nigro-fuscus, pube densa sericea griseo-fusca 763- 



titus, capite thoraceque pilis longioribus pubescentibus, hoc latitudine 

 triple- breviore, lateribus valde rotundatis, angulis posticis marginatifl, 

 elytris obsolete striatis dense subtiliter punctulatis, margine tcnui lineo- 

 lisque pluribus fasciatim positis testaceis ornatis, pedibus testaceis, tibiis 

 posterioribus infuscatis. Long. '25. 

 Mas, labro valde producto, basi utrinque late lobato, apice emarginato, 

 maDdibulis elongatis, tenuibus, elytris thorace angustioribus a basi 

 paulo angustatis. 



One specimen; San Diego, California. This species exactly 

 resembles in form and characters //. gnatho, but the thorax and 

 body are entirely brownish-black, and the pale markings of the 

 elytra are very narrow; the usual bands are formed by the con- 

 fluence of narrow linear spots, one of which attains the base, and 

 another is placed just before the tip. The mandibles, as in tin- 

 preceding species, are ferruginous, edged with black. 



280. II. ventralis. Mela. Proc. Acad. Nat. Sci. 2, 90. //. labiatus 



Kiesenwetter, Linn. Ent. 5, 282. 



Common in the Middle States and on the Upper Mississippi. 

 The male has the labrum very large, with the apex prolonged 

 and emarginate, and the mandibles long and slender. Dr. M • I 

 sheimer's species is known to me by actual comparison ; Kiesen- 

 wetter's only by description, with which my specimens agree. 



281. II. lllteoliis. Testaceus, pube sericea subtili vestitns, thorace 

 latitudine triplo breviore, lateribus valde rotundatis, angulis posticia 

 submarginatis, elytris vix obsolete striatis, densiasime pnnotalatis. 

 Long. •10. 



Banks of the Colorado River, California, Dear Fori Yuma 

 Still smaller than //. limbatus Kit's., and more finely punctured. 



