OF NEW ZEALAND. IOI 



Group XANTHOLINID^E. 



Antenna inserted at the middle of the epistome, with eleven joints. 

 The spiracles of the prothorax invariably exposed. Labrum fissile or 

 bilobed among the majority, frequently furnished with a membraneous 

 or coriaceous border. Without ocelli. Elytra not longer than the 

 sternum. Abdomen margined laterally. Anterior coxa conical ancT 

 prominent ; the posterior obtusely conical. Tibia generally spinous ; 

 tarsi pentamerous. The prothorax with a membraneous space under- 

 neath. 



Othius. 



Leach; Lacord. Hist, des Ins. Coleop., Tom. ii.,/. 63. 



Mentum very short. Ligula rather prominent, rounded and entire 

 in front ; its paraglossse longer than it, triangular, divergent, ciliated 

 inwardly. Labial palpi with their joints thickening gradually; the last 

 sub-acuminate ; the second and third of the maxillary equal ; the fourth 

 a little shorter, sub-acuminate. Inner lobe of the maxilla very much 

 larger than the external, and ciliated inwardly; the latter narrow, 

 ciliated at its apex. Mandibles short, obtusely dentate in the middle. 

 Labrum narrow, transversal, slit in the middle. Head rather elongate, 

 attached to the thorax by w a rather thick neck. Eyes small, rounded, 

 plane. Antennce straight, rather short, gradually incrassated ; basal 

 joint moderately long, second and third obconical, joints four to ten 

 very short, eleventh oval, almost pointed at its extremity. Prothorax 

 elongate, sub-parallel, rounded at its base, truncated in front. Elytra 

 truncated behind ; their suture entire. Abdomen linear. Legs short, 

 the intermediate contiguous ; tibia spinous ; tarsi five-jointed, the four 

 first of the anterior dilated and spongy underneath ; the basal joint of 

 the four posterior somewhat more elongate. 



Body elongate, narrow, linear, winged. 



187. O. adustus, n.s. Elongate, linear; moderately shining, 

 brownish or blackish red, with red legs, dark-red antennae and reddish 

 palpi. Head a little longer than broad (exclusive of the mandibles), 

 not wider than the prothorax, with rounded hind angles, and somewhat 

 narrowed anteriorly ; there are three punctures between each antenna 

 and eye, one close behind the latter, and a few others along the basal 

 and lateral margins. Prothorax oblong, slightly narrowed posteriorly, 

 with a few punctures near the margins, not, however, sufficiently regular 

 to be accurately described. Scutellum curvilinearly triangular, smooth. 

 Elytra a little narrower but much shorter than the prothorax, and, con- 

 jointly, emarginate behind ; they are slightly rugulose, punctured almost 

 in regular rows, the punctures rather distant, with short, yellowish hairs 

 proceeding from them. Abdomen sparsely punctulate, with pubescence 

 similar to that of the elytra ; the apex of each segment dilute in colour. 

 Tibia moderately spinous externally. Antennce, short, with more or less 

 obconical joints; the first as long as the second and third taken 



