Longicorvia Malayuna. 227 



impressed punctures ; nearly all the granules with an impressed 

 puncture behind. 



Length 10 — 11 lines. 



Hypselomin^. 



The genus which gives its name to this sub-family is exclusively 

 confined to South America, and was generally supposed to be 

 synonymous with Hypsioma, Serv., until the difference was pointed 

 out by Messrs. Thomson and Bates. Hypselomus, Perty, is, 

 however, a somewhat aberrant genus, and it would therefore have 

 perhaps been better to have called the group Hypsiomince, were it 

 not that M. Thomson has a "division" Hypsiomitce limited exclu- 

 sively to the South American species. Mr. Bates places these 

 genera with Oncideres. 



The principal character of this subfamily is the approximate 

 and ahnost contiguous position of the antennae at their base, a cha- 

 racter which, except in Hippopsince, is only occasionally met with 

 among the LamiiclcE. To this is generally added a long, stout, more 

 or less cylindrical scape, a trigonate form of elytra, which are 

 crested or otherwise raised at the base, legs of moderate length 

 with thickened or clavate femora, and tarsi invariably of equal 

 length or nearly so. Except in the South American genera, "the 

 mesosternum is almost without exception elevated and produced, or 

 toothed. Among the Asiatic and Australian forms only four genera 

 have the prothorax unarmed. 



None of the species of this sub-family are found in Europe, and 

 Acridocephalas, Chev., is the only African genus known to me that 

 can be referred, and that not altogether definitely, to it. All the 

 Asiatic* and one Australian genus are represented in the collec- 

 tion, which contains nineteen generaf and thirty-seven species. 

 Of the Australian genera, Zygocera, Callipyrga, Demonassa, and 

 Melon, are among the most prominent ; the last, alluded to above, 

 has a species from Asia. 



* Tliere is a form, however, from Northern India, described by M. Thom- 

 son (Arch. Ent. i. 291}, under the name of Monochamus subgevimatus, which 

 appears to me to belong to this sub-family, and to be very nearly allied to 

 Pharsalia, and with difficulty distinguishable from it by any definite technical 

 characters. The antennae of the males are shorter and less setaceous, the scape 

 stotiter, and the femcra narrower ; the mesosternum is also prominently 

 toothed anteriorly. In my collection it has long stood under the generic 

 name of Cyco*. (See Proc. Zool. Soc. 1866, p. 244.) 



f Exclusive of Lcelida {post, p. 257), which probably belongs to this sub- 

 family, though its true position is at present doubtful. 



Q 2 



