COLEOPTERA 



Head narrowed anteriorly, with raised margins, densely and dis- 

 tinctly but not coarsely punctured ; clypeus nearly truncate. Pro- 

 thorax transverse, narrowed towards the front, finely and closely 

 punctulated, bi-foveate at base. Scutellum elongate, triangular, 

 almost imperceptibly punctulated. Elytra convex, punctate-striate ; 

 interstices convex, closely punctulated. Legs elongate. Underside 

 dull-black, closely and finely sculptured. 



Most nearly approaches R. cyaneus ; differs from it in having 

 longer antennae, a more obviously punctured head, with three more 

 or less distinct foveae on the vertex, more finely sculptured thorax, 

 and the elytra, instead of presenting a nearly even slope, have 

 deeper striae with elevated intervals. 



Length, 2f~3|- lines ; breadth, i|-if . 



The insect was found by Mr. T. F. Cheeseman, F.L.S., on Aci- 

 phylla lyalli, growing at an elevation of about 5,000 feet, on Mount 

 Arthur. 



Group-PSELAPHIDJE. 



Gastrobothrus. 



Nov. gen. 



Maxillary palpi quadri- articulate ; basal joint minute ; second 

 elongate, arcuated, gradually incrassated ; third stout, as long as 

 broad, sub-globose ; fourth large, ovate, as long as, but stouter than, 

 second. Head moderate, narrowed behind. Mandibles robust, acute 

 at apex, dentate inwardly. Antennae, distant, inserted in lateral 

 cavities in front of but not close to the eyes ; first joint stout ; 2-9 

 cylindrical; second shorter than third; 3-7 about equal; eighth 

 short, sub-quadrate ; ninth larger than the preceding one ; tenth 

 distinctly larger than ninth. Eyes small, prominent, coarsely 

 facetted. Prothorax sub-globose, with a large fovea at each side, 

 rather broader than head. Elytra not much longer but much 

 broader than thorax, considerably narrowed towards the base, 

 deeply sinuated behind. Hind-body broad, marginated, apical seg- 

 ments deflexed. Abdomen large, the intermediate segments deeply 

 excavated, appearing quite hollow ; the inner margin of the penulti- 

 mate widely emarginate, the extremities forming two corneous pro- 

 tuberances ; apical segment entire. Legs stout, tibiae flexuose ; tarsi 

 with a minute basal joint, second and third about equal, terminated 

 by one claw. 



An extraordinary insect (No. 230) is the type, which becomes 

 Gastrobothrus abdominalis, and should precede Bryaxis. The 

 antennal tubercles are separate, and there is a large fovea near 

 each eye. 



NOTE. Parmipalpus, p. 662. Structure of maxillary palpi should 

 be read " first joint minute ; second longest, slightly but widely in- 

 curved in front, almost triangularly dilated medially behind, and 

 there setigerous ; fourth about as large as the head, nearly round, 

 somewhat truncated outwardly, with a small round notch near the 

 back part of its outer margin ; the third is longer than broad, and 

 dilated apically." 



