COLEOPTERA 651 



Head rugose-punctate beneath the clothing, eyes convex, prominent, first funicle 

 joint of antennae notably longer than the second. Pronotum smooth and shining 

 between the punctures and with a median smooth line not extending the whole length. 

 Elytra shining but rough between the series of punctures, in very fresh specimens the 

 surface nearly concealed beneath the squamosity, pseudepipleura regularly clothed 

 all over. 



Male with the apical ventral segment broad at the apex and, like the three preceding, 

 densely clothed with hairs ; the two preceding and the metasternum with denser patches 

 at the sides, less dense between these and very closely punctured. Length 9 — 14 mm. 



Hab. Molokai, mountains. 



(2) Rhyncog07Uis simplex, sp. nov. 



Black or piceous, the antennae and legs generally more or less obscurely rufescent 

 in parts, the tarsi always so, clothing not dense, of pale and fine appressed hairs, denser 

 along the sides of the pronotum, forming an entire band or broken into a denser anterior 

 and posterior spot. Pseudepipleura clothed like the dorsal surface of the elytra. Head 

 punctate strigose, first and second funicle joints of antennae nearly equal. Pronotum 

 shining between the punctures, which differ in size. Elytra with about 13 rows of 

 regular punctures dorsally, between these very minutely tuberculate. 



Male beneath with the apical ventral segment truncate or widely rounded at 

 apex and with the preceding densely pubescent, in the female these segments are 

 also more pubescent than the others, the apical one narrowly rounded at apex ; third 

 segment excessively densely punctured, much more finely than the second. Length 

 ^ % 7 — 1 1 mm. 



There appear to be two forms of this species, the one more densely pubescent on 

 the elytra and with the hairs more approaching a squamose condition. This is much 

 the rarer and the two are found in company, while there appears to be no other point of 

 distinction. The species is (like most others of the genus) variable, and while the males 

 are usually more depressed than the females, this is not always the case. 



Hab. Molokai, mountains, below the forest, 700 — 1000 ft. 



(3) Rliyncogonus cxtranciis, sp. nov. 



Female sordid black or fuscous inclining to red, the antennae and legs sometimes 

 more or less of this colour. Clothing pale, in part subsquamous, very dense all over in 

 fresh examples, in less fresh ones denser on the legs and sides of the pronotum, with a 

 tendency to form maculae, especially on the pseudepipleura. Head roughly sculptured, 

 antennae with the first tunicle joint hardly as long as the second, which is much longer 

 than the third. Eyes strongly prominent and convex. Pronotum with distinct punc- 

 tures not verv dense, but with finer interstitial ones connecting them, lateral lines of 



