OF NEW ZEALAND. 175 



Sent both from Auckland and Tairua by Messrs. Lawson and Broun, 

 but only four or five specimens ; Captain Broun's specimens were among 

 some species forwarded to me as found on Cyathea dealbata. 



OBS. The remarkable species is, I have no doubt, correctly placed 

 near Mr. Wollaston's Xenoscelis deplanatus (Canary Islands). In general 

 structure it is very similar to that species, so that I have given it the 

 same generic name, notwithstanding the difference in the tarsi. 



Group RHIZOPHAGIDJE. 



A single lobe to the maxillce. Labrum concealed under the epi- 

 stome. Antennce with ten joints. Pro thorax not covering the base of 

 the elytra; the latter leaving a portion of the pygidium uncovered. 

 Cotyloid cavities completely closed behind. Tarsi heteromerous among 

 the males, pentamerous in^the females. 



Lenax. 



Sharp; Entom. Mon. Mag., May, 1877, /. 269. 



Antenna very short, ten-jointed, the first joint short and thick, the 

 second stout and bead-like, three to nine small, the ninth being very 

 short and transverse, tenth joint forming a large abrupt club, the apical 

 portion of which is pubescent, but not to be distinguished as a distinct 

 joint. The parts of the month are but little visible, the mandibles being 

 scarcely, if at all, visible from the upper surface. The head is abruptly 

 constricted behind, so as to possess a broad neck ; on the under-surface 

 behind the eyes is a very deep large cavity, in which the club of the 

 antenna can be received. Prothorax with the coxal cavities closed, 

 and broadly separated from the mesothorax, and also rather widely 

 separated from one another by a depressed space. Metasternum elon- 

 gate. Hind-body with five ventral segments separated from one another 

 by deep sutures, the basal one a good deal longer than the next ; it is 

 curved downwards towards the extremity, the pygidium is exposed, and 

 shows a deep longitudinal groove on the middle. The tibia are broad 

 below the middle, but with the apex very oblique ; they are armed near 

 the apex with teeth or small projections. The front and middle tarsi 

 are five-jointed, all the four basal joints are small, the hind tarsi are 

 apparently only four-jointed, but there may be a very short and 

 concealed fifth basal joint. 



Though this extremely remarkable insect should evidently be classed 

 near Rhizophagus, it is so distinct therefrom that I have given it a 

 different generic name ; the above outline of its structural characters 

 will enable it to be identified. 



313. L. mirandUS, Sharp; Entom. Mon. Mag., May, 1877, 

 /. 269. Elongatus, angustus, vix nitidus, sine pubescentia, nigricans, 

 antennis pedibusque runs ; prothorace elongato, angulis anterioribus 

 prominulis, dorso biseriatim fortiter punctate ; elytris longitudinaliter 

 sulcatis, sulcis fortiter punctatis ; abdominis segmento ultimo grosse 

 punctate. 



Long., 4j mm. ; lat., i mm. 



