LeConte.] DRYOPHTHORINI. 335 



Beak long, not dilated at tip; body uneven, cov- 

 ered with a crust DBYOPHTHORINI. 



Beak long, or moderate, usually dilated at the 

 end, with rapidly descending antennal grooves, 

 front coxae distant, body sometimes depressed.. COSSONINI. 



Beak usually short, always continuous with the 

 front, and equally stout; front coxa? approxi- 

 mate; body cylindrical RHYNCOLINI. 



Tribe I. IIRYOPHTHORINI. 



I have associated with Dryophthorun two other genera which have but 

 little in common with it or with each other, except the following characters, 

 by which they differ from other Cossonidce, and approach other groups of 

 RhynchopJiora. The beak is longer than the head, not very stout, cylin- 

 drical, not dilated at tip, and the buccal cavity is smaller; the gular pedun- 

 cle and mentum are smaller and narrower than in the other tribes. The 

 tibiae are slender, not at all dilated, and the terminal hook is long. The 

 body is coarsely sculptured, and covered with a dirt-colored crust. 



Two groups are indicated by the three genera before me. 



Metasternum long; funicle 4-jointed Dryophthorl. 



Metasternum long or short; funicle 5-7 jointed Dryotribi. 



Group I. l>ryophthori. 



A single small species, represents this group in our fauna. It resembles 

 in form Calandra, rather than any genus of Cossonidce known to me. The 

 antennal club is rounded, oval, corneous, except the tip, which is spongy 

 and not cumulated; the joints of the funicle are only four, while those of the 

 tarsi are distinctly five, though in the South European Charorhinu*, ac- 

 cording to description, this anomaly disappears, and the tarsi are 4-jointed. 

 The met astern um is long and the side pieces are narrow; the first, second 

 and fifth ventral segments are very large; third and fourth excessively 

 short, shorter in fact than in any other genus I have examined. The 

 antenna? are inserted very near the eyes, which are coarsely granulated and 

 transverse. 



DRYOPHTHORUS Sch. 



1. D. corticalis Say, Cure. 24; ed. Lee. i, 292; Boh., Sch. Cure, iv, 1089; 

 Horn, Pr. Am. Phil. Soc. 1873, 431. 



Atlantic district generally; found under bark. Boheman mentions the 

 occurrence in California of D. bituberculatu*, which is widely distributed 

 over the islands of the South Pacific; Sandwich Islands and New Zealand. 

 Its extension to California is doubtful. 



Group I>ryotrlbi. 



Two species of very remarkable genera are here represented; the first 

 bears some resemblance to Dryophthorus, and in the arrangement of AVol- 



