Coleopterological Notices, VII. 563 



and the ventral characters are somewhat as in Cupila clavicornis 

 Makl, the third segment having a large rectangular lamina at 

 lateral third, from beneath which projects obliquely and laterally 

 a singular wart-like elevation, bearing at its summit a cluster of 

 remarkable squamules ; the sixth segment is much longer than 

 the fifth, scarcely modified, and the seventh, or ventral pj-gidium, 

 is small and transversely'" fusiform ; ventrals two to five decrease 

 rather rapidly in length. The last joint of the maxilliary palpi is 

 elongate, gradually swollen within toward base, and is longer than 

 the entire basal portion. 



Trimium Aube — This genus appears to be exclusively palge- 

 arctic, and does not occur at all in the American continents. As 

 represented by brevicorne, the body is more elongate than in 

 Melba, and difi"ers altogether in the formation of the basal parts 

 of the prothorax, the transverse dorsal sulcus not extending at 

 all down the flanks, but terminating at some slight distance 

 within the rounded lateral edges, in small deep and glabrous en- 

 largements ; the fovese of the head are nude, rather widely sepa- 

 rated and feebly connected b^^ a large shallow ambient depression ; 

 tenth antennal joint slightly asymmetric and transA^ersely trian- 

 gular or cuneiform. Elytra with an elongate discal fovea at base, 

 without trace of a post-humeral fovea, but with a very fine pleural 

 line extending parallel to the side margin from before the middle 

 to the apex, its anterior point of origin entirely indefinite. 

 First dorsal elongate, with a median depression at base, the 

 second ventral nearly as long as the next three combined. 

 Tarsi slender and densely clothed with very short stifi" hairs, 

 the terminal claw quite small, slender and feebly arcuate. 



Trimiomelba n. gen. — Greatly resembles Melba in the form of 

 body, but difl"ers in the elongate first dorsal and second ventral 

 segment, which character is accompanied by a larger head, 

 flatter above, with the sides more abruptly vertical, the fovese 

 more remote; the head is frequently, or perhaps always, more or 

 less modified in the male, which seems never to be the case in 

 Melba. The penultimate antennal joints are small, lenticular and 

 symmetric. The hind tarsi are long and slender, the second joint 

 twice as long as the third, the claw ver}^ small and slender. The 

 species are three in number as follows : — 



