COLEOPTERA 587 



The measurements of the Hawaiian Anobiidae, here given, are mostly taken from 

 the type specimens. It is only necessary to examine a series of any species to find 

 considerable variation in size, so that this becomes unimportant for specific distinction, 

 unless there is a very considerable difference between that of any two species. 



( I ) Xylctobiits ivalsinghai)iii, sp. nov. 



Statura maxima, sat elongatus, totus dense pallido-tomentosus, antennis rufis aut 

 fuscis. Caput dense tomentosum, oculis majoribus, antennis (praecipue maris) longis, 

 articulo sexto et sequentibus fortiter elongatis, parum serratis. Pronotum perinaequale, 

 juxta medium fortiter elevatum aut tuberculatum, margine laterali ante angulos poste- 

 riores excise, his distinctissimis, baud rotundatim obsoletis, densissime pallido-tomen- 

 tosum, antice saepius fusco-variegatum, elevatione plerumque nigro- aut fusco-notata. 

 Elytra densissime pallido-tomentosa, lateribus aut ad media aut usque ad apices 

 nigro- aut fusco-limbatis, stria secunda cum tertia sola ad apices confluente. Long. 

 6'5 mm. van ?iniior, elytrorum dorso multo magis fusco-variegato, statura minore. 

 Long. 4'5 mm. 



I have seen only a few examples of this remarkable insect, which is the largest 

 of the Hawaiian Xyletobiiis, and in some respects recalls the genus Holcobiiis. Were 

 it not that it appears to be connected with more ordinary forms by X. silvestrii, I 

 should have separated it and its close ally, as forming a different genus. If denuded 

 of tomentum the colour of the insect is usually red, and when thus bare, the elytra 

 show a somewhat deep striation, the interstices being noticeably convex. The larva 

 of this insect is not rare near Honolulu, not only in native woods, but also in intro- 

 duced dead trees, such as the guava. For this reason I long suspected it of being an 

 introduction from some other country, but the discovery that there is a closely allied 

 species on Kauai and of its relationship to A', silvestrii, as mentioned above, sufficiently 

 prove that it belongs to the endemic series. 



Hab. Oahu, Maui : — 500 to 4000 ft., widely spread and no doubt not rare. 



(2) Xyletobius diirraiiti, sp. nov. 



Forma facieque A', ivalsinghaiuii, et eisdem modis variabilis, forma pronoti bene 

 distinctus. Pronotum, antice visum, sat fortiter curvatim transverse elevatum, elevatione 

 haudquaquam conico-truncata. Long. 6 mm. 



Hab. Kauai ; below 2000 tt. to over 4000 ft. in the mountains ; no doubt generally 

 distributed, but neglected. 



