594 FAUNA HAWAIIEXSIS 



(12) Xyletobius cuccras, sp. nov. 



Colore nigro sive nigrofusco rufoque variegatus, facie tota X. nitpti, antennis 

 exceptis. Antennae ^ longissimae, articulo quarto brevi, havid quaquam longiore 

 quam latiore, quinto fortiter elongate, fere bis longiore quani latiore, et praecedentibus 

 permulto longiore, sexto quam quintus conspicue longiore et graciliore, articulis 8, 9 et 

 10 perelongatis et gracillimis. Long. 375 mm. 



Differs in no wise, excepting the remarkable antennae, from some examples of 

 A', nuphis. The pronotum has the usual strong shining margin of the A', proteus 

 group. From Oahu there was a single mutilated, but no doubt originally fine, 

 example of (probably) this species. Its antennae had been torn off and broken up 

 by unskilled mounting and many joints lost. 



Hab. Oahu, Lanai. — Lanai, Koele, 2000 ft., a single Z taken. 



(13) Xyletobius miimis, sp. now 



Sat robustus, totus tomento cinereo aut subfiavescente vestitus, pedibus ex magna 

 parte nigricantibus, antennarum articulo secundo et nonnunquam etiam primo ruiescen- 

 tibus. Antennae utriusque sexus fortiter elongatae, maris quam feminae evidenter 

 longiores, articulo sexto quam quintus multo longiore, articulis 9 et 10 maris valde, 

 feminae sat fortiter elongatis. Pronotum latum, ubique granulatum, margine antico 

 toto sat distincte elevatum et nitidum. • Elytra latiora, parum aut baud variegata, 

 stria secunda plerumque cum quinta contluente, his tertiam quartamque includentibus. 

 Long. 3—3-5 mm. 



\^ery closely allied to X. proteus, but so far as the three dozen examples, that 

 I have examined, show, it is very constant and uniform in appearance. Neither the 

 typical form nor any of the varieties of X. proteus was taken in company with it. It 

 differs from this species in being of smaller average size, with the antennae comparatively 

 longer. It is excessively close to X. sitbmimus, but is of larger average size than that 

 species, and is more robust, the elytra being broader and less elongate. 



Hab. Hawaii on the Western side of Mauna Loa, generally in the lowest forest 

 belt, where introduced ants were absent. 



(14) Xyletobius subiniiiius, sp. nov. 



Niger, haud latus, cinereo-tomentosus, A'. }>iii?io cognatissimus, differt statura 

 plerumque minore, et forma magis elongata. Long. 2*5 — 3-25 mm. 



This is another of the allied forms, which is separable with some doubt from 

 X. proteus, of which it might be a small or degraded variety. It is of much smaller 

 average size, of more elongate form and the antennae are as well or better developed 

 than those of normal A', proteus, the sides of the thorax and the head are much less 



