448 FAUNA HAWAIIENSIS 



In this species the sides of the thorax are broad, but they are little elevated, there 

 being comparatively little impression of the surface ; the head is very broad ; the 

 punctuation of the thorax is very dense and is rather fine, the pubescence is short and 

 very fine but not scanty ; there are two vague depressions just behind the middle of 

 the thorax. The elytra are a little uneven owing to numerous small depressions ; their 

 grooves are not deep, and are rather narrow, being scarcely as broad as the interstices. 

 The pygidium is rather short in the male, and rounded at the tip, very finely punctured 

 towards the apex ; the last ventral is almost truncate. In the female the pygidium 

 is not rounded at the tip, neither is it quite truncate, the margin being a little sloping 

 on each side, though only very slightly. Hence the sexes are externally more similar 

 than usual, the male being distinguished by the more rounded hind margin of the 

 pygidium, and by the supplementary segment, which, however, usually projects very 

 little. 



The individuals from Molokai and Lanai agree fairly well in the above characters ; 

 there is a good deal of variation in the colour and size, and to a certain extent in the 

 amplitude and sculpture of the thorax ; the variation in this latter respect being in 

 a certain degree sexual. Two females from Maui are more aberrant, the pygidium 

 being a little differently shaped, and more distinctly angulate in the middle of the hind 

 margin. A female from Oahu is still more aberrant, the thorax being a little differently 

 shaped and the pygidium narrower at the tip. More material can alone decide whether 

 these slight distinctions are important. 



Hab. Lanai, Molokai, Maui, Oahu. — Lanai; 2000 ft. and over (nos. 84, 86), 

 Koele mts. 2500 ft. — Molokai; 3000 — 4500 ft. and over; "highest forest" (no. 155); 

 "head of Pelekunu " (no. 165). — Maui ; Haleakala, 3000 ft. (no. 772). — Oahu (Kavvai- 

 loa gulch (nos. 41 and 832, Perkins). 



(20) Goniorychis anticatus, sp. nov. 



Sat latus, subdepressus, hand nitidus, ferrugineus, superne hie inde infuscatus ; 

 prothorace fortiter transverso, postice parum angustato, sat dense punctate ; elytris 

 distincte sulcatis, obsoletissime punctatis. % Long. corp. 6 mm., lat. 2f, long, protho- 

 racis i-|, lat. prothoracis 2\, long, elytr. 2f mm. 



Although very similar to G. arduus I have no doubt that this is a distinct form, 

 as it has a narrower head, and the female pygidium more prolonged in the middle 

 so that it overlaps the ventral plate, and is quite visible when the under-surface is 

 looked at. The thorax is but little narrowed behind, and it is very difficult to see 

 definitely punctures in the grooves of the elytra. I have seen only females. Three 

 specimens. 



Hab. Kauai. Mountains above Waimea, under bark of Koa and other trees, 

 4000 ft. (nos. 256, 257) ; also one from high plateau (no. 631, Perkins). 



