204 FAUNA HAWAIIENSIS 



95, No. 529, I variant; Kauai, 4000 ft, x. 95, without any number, 3 variant; Kauai, 

 high plateau, viii. 96, No. 631, i van a; Makaweli, 2500 ft., 11. 97, No. 668, 11 var. a; 

 Kauai, 4000 ft., viii. 96, No. 676, typ. 13, variant 16, var. 34; Kauai, high plateau, 

 VIII. 96, No. 682, I typ.; Mts. Waimea, Kauai, 4000 ft., vi. 1894, without any number, 

 8 var. a, but this lot is, as var. a, aberrant, showing the characters of the variety in 

 a variable manner, one very large specimen, for instance, having the striae but little 

 punctured. 



So far as it can be permitted to form an opinion from such an imperfect record, 

 it would appear that there is considerable segregation of the forms. It is only under 

 No. 676 that we find the forms indiscriminately mixed, and that number represents a 

 month's collecting presumably in different localities of Kauai, so that no importance 

 can be attached to it. 



This examination shows that, for the study of variation, detailed records separating 

 each day's work of the collector are desirable. 



I may also mention that var. a — the extreme form in one direction — is much more 

 variable than the extreme form in the other direction ; no doubt it was this that led me 

 to call the latter the typical form, as I did before I had made any analysis as to the 

 variation and its segregation. 



(S) Diseiioclms crythropjis, sp. nov. 



Niger, nitidus, antennis, palpis pedibusque rufis ; prothorace basin versus fortiter 

 angustato, elytris profunde striatis, striis omnibus fortiter punctatis. Long. 9- — 10 mm., 

 lat. 3:1: mm. 



This species is very highly polished, and is remarkable on account of the very 

 regular and conspicuous sculpture of the elytra. The antennae are long and slender. 

 The thorax is much narrower than the elytra, rounded at the sides and much narrov/ed 

 behind, the position of the obtuse hind angle distinct, the surface very shining, with 

 a rather deep depression near the hind angle. The elytra are broad, with deep, 

 punctate striae, that are similar both at the sides and suture though the punctuation 

 is absent from the apical portion, the interstices are broad ; there is no sinuation of the 

 sides near the tip. 



Sixteen specimens. 



Hab. Kauai (Perkins): Koholuamano, 4000 ft., in August and October. 



(9) Disenochus sulcipennis, sp. nov. 



Piceus, antennis, palpis pedibusque dilute rufis ; thorace transverso, basin versus 

 fortiter angustato, basi punctata ; elytris profunde striatis, striis baud punctatis, sed 

 subtiliter crenatis, interstitiis subangulatis. Long. 8 — 9 mm. 



The sculpture of the elytra is rather peculiar in this species ; there are deep striae, 



