6o4 COLEOPTERA 



versus, antice et postice constrictus, medio convexo, lateribus tumidis, 

 inermibus. Elytra convexa, prope basin transversim depressa, apice 

 obtuse rotundata, fere truncata ; stria suturali solum impressa, versus 

 basin abbreviata. Acetalnda antica et intermedia extus clausa. Pro- 

 sterniDH inter coxas vix arcuatum, angustissimum, apice dilatatum ; 

 mesosternum oblongum, vix declive. Mesothorax paululum abbreviatus. 

 Pedes elongati ; coxce magnpe, globose ; femora fortiter clavata ; tibice 

 intermedin extus leviter emarginatse ; tarsi vix elongati, articulo primo 

 c^eteris subaequali; ungues divaricati. Antennce corpore triente longiores, 

 graciles, sparsim ciliatee ; articulo primo basi extus subito sed modice 

 dilatato, caeteris elongatis a tertio gradatim brevioribus. 



This genus has many of the peculiar characters of Xylotoles, and is 

 evidently allied to it ; but its facies is very different, resembling that of 

 many Acanthocinince. {e.g., Driopea). The metathorax, without being 

 conspicuously abbreviated as in the Dorcadionina., is so much shortened 

 that the distance between the middle and posterior coxse is somewhat 

 less than that between the anterior and the middle. The prosternum, 

 also, although very narrow between the coxEe, is nearly plane, as in 

 Xylotoles. The head is of precisely the same shape. 



1057. S. (Xylotoles) bimaculata, White: Voy. Er. Terr., Ins., 

 p. 22. The head bears a smooth, continuous, dorsal line, and fine 

 pallid pubescence. Thorax rather transverse, convex, rather broader in 

 front than behind,' dilated laterally near the middle, transversely de- 

 pressed anteriorly, constricted and depressed near the base ; the disc is 

 of a shining coppery-brown colour, the rest is clothed with scattered 

 pale griseous tomentum. The elytra are convex, sub-ovate, their 

 shoulders obliquely, the apices individually, rounded ; there is a trans- 

 verse depression near the base, and in front of this, on each, an obtuse 

 elevation, and each has a sharply-defined sutural line extending from 

 the apex to the frontal depression ; the ground-colour is fuscous, scarcely 

 perceptible, however, on account of the superincumbent pubescence ; 

 the variations consist of a large, almost round, pallid spot, on each elytron 

 near the outer margin of the depressed part, and several irregularly 

 formed, confluent patches extending from the hind leg to the apex. 

 The antenna; and legs are nearly of the same colour as the body, except 

 the basal portion of the thigh which is paler ; they are finely pubescent. 



Such is the typical form ; varieties exist, differing in colouration; the 

 legs sometimes being pale rufous. 



Length, 2^—3 lines. 



The above has been substituted for Mr. White's description. The 

 insect frequents the foliage of Coriaria sarnientosa, but does not confine 

 itself exclusively to that shrub. 



1058. S. (Xylotoles) gracilis, White; Voy.Er. Terr., I?is.,p. 22. 

 This species in its general outline differs considerably from the preceding 

 one ; the thorax is relatively longer and narrower, and the elytra more 

 cylindrical. 



The thorax is tumid laterally, and somewhat depressed transversely 

 in front and behind, so that the disc seems elevated ; the surface is not 



