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 not wider than the elytra, and the 

 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 be- 

 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 fasciae. 



i 



279. H. laMatus. Nigro-fuscus, pube densa sericea griseo-fusca ves- 

 titus, capite thoraceque pilis longioribus pubescentibus, hoc latitudine 

 triple breviore, lateribus valde rotundatis, angulis posticis marginatis, 

 elytris obsolete striatis dense subtiliter punctulatis, margine tenui lineo- 

 lisque pluribus fasciatim positis testaceis ornatis, pedibus testaceis, tibiis 

 posterioribus infuscatis. Long. -25. 



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

 mandibulis elongatis, tenuibus, elytris thorace angustioribus a basi 

 paulo angustatis. 



One specimen ; San Diego, California. This species exactly 

 resembles in form and characters H. 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 the 

 preceding species, are ferruginous, edged with black. 



250. H. ventralis. Mels. Proc. Acad. Nat. Sci. 2, 99. H. 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. Mel- 

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

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



251. H. luteolus. Testaceus, pube sericea subtili vestitus, thorace 

 latitudine triplo breviore, lateribus valde rotundatis, angulis posticis 

 submarginatis, elytris vix obsolete striatis, densissime punctulatis. 

 Long. -10. 



Banks of the Colorado River, California, near Fort Yuma. 

 Still smaller than H. limbatus Kies., and more finely punctured. 



