550 Mr. T. Vernon Wollaston on the 



that there is a second spine, from the inner angle of the 

 tibia, of almost equal length, besides an additional smaller 

 one between the elongated central one and the outer 

 angle, an anomalous structure (amongst the Cossonids), 

 which causes the whole apex to be essentially spinulose. 

 Yet there is a little indication of an irregularity of (at all 

 events) partially the same character, in the (likewise 

 African) genus Aorus and the South- American Lipan- 

 cylus, which I have consequently placed in juxta-position 

 with Amorphocerus, and in which at any rate the terminal 

 uncus appears (as it seems to me) to be obsolete. 



In other respects Amorphocerus is remarkable for its 

 rather depressed, broadish, parallel-oblong, posteriorly- 

 obtuse body, dark hue, and very deeply (though not very 

 densely) sculptured surface ; for its rostrum being parallel 

 and somewhat robust, though not very long ; for its pro- 

 thorax being largely developed, though not wider (at its 

 broadest part) than the elytra, and but very little con- 

 stricted in front ; and for its antennas, which are implanted 

 considerably behind the middle of the rostrum) being 

 short and thick, with the funiculus (the first joint of 

 which is much enlarged) exceedingly solid and compact, 

 and the club small and not at all abrupt. Its scutellum is 

 very conspicuous, and the third articulation of its feet is 

 considerably expanded and bilobed. 



58. LIPANCYLUS (nov. gen.). I am indebted to 

 Mr. Jan son for the loan of the very extraordinary insect 

 for which the present genus is established, and which is 

 South- American, it having been taken, I presume by 

 Mr. Bates, in the region of the Amazon. I have not the 

 slightest doubt that its true affinities are with Aorus from 

 western Africa, with which it agrees in the most ano- 

 malous character (for the Cossonidce) of its tibial hook 

 being obsolete, as well as in its elongated, extremely 

 slender and cylindrical (though less curved) rostrum, its 

 narrow, parallel body (which, as in that genus, will be 

 seen, when viewed beneath a high magnifying power, to 

 be not altogether bald), in its unconstricted pro thorax, its 

 wide and greatly developed feet (the third joint of which 

 is much expanded and bilobed), its minute claws, and 

 in the fact of its long and thickened legs being more 

 approximated at their base than is usual in the members 

 of this family. Nevertheless, although approaching Aorus 

 in so many important respects, Lipancylus has an abun- 



