i8!io.j 267 



males of many of them exhibit very well-marked peculiarities (apart 

 from sexual distinctions in the form of the eyes or of the antennae), 

 and in a few cases the females also ; these peculiarities are most highly 

 developed in some of the species of Central America, and in one of 

 those from Japan described below. The following; characters appertain 

 to the male sex only: — (1) a sharp tooth, of variable length according 

 to the species, at the inner apical angle of the anterior tibife (some- 

 times present on the middle tibia) also) ; this is not to be confounded 

 with the almost or quite obsolete tibial spurs. (2) a curvature or an 

 abrupt bending inwards of the anterior tibiae. (3) a somewhat similar 

 form of the middle tibiae ; this is developed in an extraordinary degree 

 in the Japanese Jl. disto7-tus. (4) a thickening or dilatation of the 

 posterior femora (common to many species, and sometimes accompanied 

 by an angular extension on the inner, or very rarely on the outer, 

 side of the femur). (5) a groove or pouch-like excavation along the 

 inner side of the posterior femora, sometimes ciliate, sometimes spongy, 

 sometimes almost smooth, within, the groove not always accompanied 

 by an incrassation of the femur (when unaccompanied by such an in- 

 crassation the femora are usually expanded along either side of the 

 groove, the pouch-like appendage thus formed being often of a darker 

 colour than the rest of the limb — this is well seen in X.fragilis, Ch.). 

 (G) a flattening or slight curvature of the posterior tibiae. 



Sevei'al of these characters are sometimes present in one species, 

 e. g., JC. lacertosus, Ch. 



As regards the female characters one only is to be noticed, the 

 others being mei'ely negative. (1) a matted tuft of fulvous hairs, 

 sometimes spine-like, at or above the outer apical angle of the pos- 

 terior tibiae ; this is present in several species {X. lacertosus, X.forti- 

 cornis, &c.), though apparently not hitherto noticed by authors. 



Xtlophiltjs distoetus, n. sp. 



Black, the elytra broadly and indeterminately flavo-testaceous at the base, and 

 thence to the apex brownish or piceous-brown, the upper surface shining and clothed 

 with fine decumbent pubescence. Head short, closely and rather coarsely punctured j 

 eyes coarsely granulated, moderately large, widely separated in the female, more 

 approximate in the male, the head extended on either side behind them ; antennae 

 black or piceous, widening a little outwardly and subfiliform in both sexes, rather 

 stout, joint 3 much longer than 2, 3 — 9 longer than broad, 10 a little shorter in the 

 male, transverse in the female, 11 obliquely acuminate at the tip and similar in both 

 sexes ; prothorax transverse, as wide as the head, the sides parallel behind and 

 slightly rounded in front, the disc with an obsolete depression on either side before 

 and another behind the middle, and sometimes with traces of an obsolete central 

 groove, the surface densely and rather coarsely punctured ; scutellum densely punc- 



