CALANDRTPAE. 509 



Tiil). I— DRYOPIITIIORIiM. 



AVe liiive associatcfl with Diyoplithorus two otluM* genera wliich 

 liiive but little in common with it or with ench other, except the 

 following characters, by which they diiler from other Cossonina), 

 and approach other groups of Ivhyiichoi)hora. Tlit? beak is longt r 

 than the head, not very stout, cylindrical, not dilated at tij), and 

 the buccal cavity is smaller; the gular peduncle and nientum are 

 smaller and narrower than in the other tribes. The tibiie 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 us: — 



Mctasternuin long; fuiiicle 4-jointe(l. Dryopiitiiori. 



M(!tastermim long or short ; funiele 5-7 jointed. Dryotridf. 



Gi-oup I. — Dryophthori. 



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

 resembles in form Calandra, rather than any genus of Cossoninre 

 known to us. The antennal club is rounded, oval, corneous, 

 except the tip, which is spongy and not annulated; the joints of 

 the funiele are only four, while tiiose of the tarsi are distinctly 

 five, though in the south European Chosrorhinus, according to 

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

 The metasternum is long and the sidepieces are narrow; the first, 

 second, and fifth ventral segments are very large: third and fourth 

 excessively short, shoi'ter in fact than in any other genus we have 

 examined. The antennae are inserted very near the eyes, which 

 are coarsely granulated and transverse. 



Dri/ophtho7'us corticalis is found in the Atlantic district, 

 generally under .bark. Boheman mentions the occurrence in 

 California of D. bituberculaius, which is widely distributed over 

 the islands of the south Pacific, Sandwich Islands, and New 

 Zealand. Its extension to California is doubtful. 



Group II. — Dryotribi. 



Two species of very remarkable genera ar(> here represented ; 

 the first boars a somewhat resemblance to Dryophthorus, and in 

 the arrangement of AVollaston* would be i)lacetl in the first group 



* Genera of the Cossonidse, Trans. Ent. Soc. London, 1873, p. 434. 



