Genera of the Cossonidce. 563 



76. CATOLETHROMORPHUS (nov. gen.}. The present 

 genus is founded on a single example from the East Indies 

 (I have no note as to the exact region) which has been 

 communicated by Mr. Fry ; and we may perhaps look 

 upon it as the Asiatic representative of the American 

 group Catolethrus, to which in external aspect and struc- 

 ture it is a good deal allied. Yet it manifestly cannot be 

 associated with the Catolethri, the most essential features 

 of which (as regards rostrum, eyes, and antennae) it does 

 not possess. Thus, not only is its rostrum thicker and 

 more strictly parallel (there being no indication of the 

 slight, and gradual, widening towards the base and apex 

 which is so characteristic of that group), and undivided 

 by a frontal line from the head, but the latter is more 

 exserted and largely developed, and has the eyes (instead 

 of transverse, subapproximated, and depressed) rounded, 

 comparatively wide apart, and slightly prominent. Its 

 prothorax also is considerably shorter (being more trun- 

 cated both before and behind), as well as more even and 

 convex, there being no trace of either a keel in front, or 

 of a groove-like depression behind ; its elytra are more 

 strictly parallel, and entire (instead of separately and 

 minutely rounded-off) at their apex ; its antennae (which 

 are inserted in the middle of the rostrum, instead of con- 

 siderably behind it) have their scape very much longer, 

 and their club more abrupt and less acuminated ; and its 

 intermediate coxse are more remote. This last-mentioned 

 peculiarity has a certain importance amongst these imme- 

 diate groups, occasioning the four posterior legs (instead 

 of, as in Catolethrus, the four anterior ones) to be equi- 

 distant at their base. 



77. BRACHYCH^ENUS (nov. gen.\ In its rather narrow, 

 parallel, and depressed body (which is of a palish, rufo- 

 ferruginous hue), as well as in its linear and somewhat 

 robust rostrum, its even prothorax, and the fact of its 

 four posterior legs being subequally distant at their base 

 (occasioned by the intermediate pair being rather wider 

 apart than is usual), the little Cossonid from which the 

 details for the present genus have been compiled, and 

 which has been communicated by Mr. Pascoe as having 

 been taken by Mr. Wallace at Sarawak in Borneo, has a 

 good deal in common with Catolethromorphus ; neverthe- 

 less its type is very much more minute than that of the 

 latter, its rostrum is relatively not so elongated, its 



