Nitidulidce from the Hawaiian Islands. 129 



distinct from any others here described. The coarsely- 

 facetted eyes (a character Avhich will, it appears to me, 

 prove of great value in the classificatiou of the beetles 

 called Nitidulidce in the Munich Catalogue) will distin- 

 guish the species fi-om all the other Hawaiian allies here 

 treated of, except Haptoncus ; while, from the two species 

 I attribute to that genus, the abbreviated elytra and the 

 great development of the tarsi most satisfactorily dif- 

 ferentiate Gonioryctus. I assign three species to the 

 genus, and of these three the structural characters, by 

 which I have defined the genus, are least developed in 

 Gonioryctus moiiticola. In Mr. Murray's scheme of 

 classification, the genus had better find a place near 

 Brachypeplus and Campsopyga, but I anticipate that 

 when a classification comes to be made, dealing more 

 completely with the external parts than does Mr. Murray's, 

 the affinities of Gonioryctus will be considered to be more 

 in the direction of Epuraa. 



1. Gonioryctus latus, n. sp. Latus, subtus testaceo- 

 ferrugineus, supra plus minusve infuscatus, sed hand 

 variegatus et vix teneo-micans, subopacus, crebre punc- 

 tatus, teuuiter pubescens; prothorace anterius subtruncato 

 angulis anterioribus nullo modo prominentibus ; elytris 

 obsoletissime sulcatis, marginibus pone humeros anguste 

 explanatis. Long. 7 — 7^ mm. ; lat. 3^ — 3^ mm. 



Antennte with joints 3 — 5 much elongate, the club very 

 much developed, being both broad and long. Head 

 densely punctured, distinctly infuscate and with a slight 

 brassy tinge. Thorax strongly transverse, the sides 

 broadly explanate behind ; the base truncate, very slightly 

 emarginate over the scutellum, the hind angles not in the 

 least rounded ; the surface closely punctured. Elytra not 

 twice as long as the thorax, Avith broad but very indistinct 

 grooves, closely but not distinctly punctured. Exposed 

 dorsal segments more shining than the rest of the surface, 

 distinctly but not closely punctured, their pubescence 

 almost invisible. 



In the male the apical dorsal segment has the apex quite 

 rounded, while in the female it is emarginate and depressed 

 between the two angles ; the small additional segment of 

 the male has the hind margin furnished with rather long 

 pubescence ; in the male the apical ventral segment has 

 the hind margin a little bisinuate and furnished with very 

 short cilite, while in the female it is truncate and furnished 



