COLEOPTERA 607 



breves, articulis 2 aiit compluribus basalibus rufis. A', frateriio persimilis et affinis, 

 pronoto hand simpliciter punctulato sed subtiliter sat distincte granulatim sculpturato 

 bene distinctus. Long. 3'5 mm. 



The coarser tomentum is confined to the pale elytral markings and covers the 

 pronotum except apparently for a nearly bare median longitudinal line (whereon the 

 fine granular sculpture is evident). It is of a somewhat woolly appearance as in 

 X. fraternus. Though so like the allied forms I have little doubt X. roridns is 

 a distinct species. I have seen only two examples. 



Hai;. Oahu, Waianae mountains. 



(40) Xylctobins sykesii, sp. nov. 



Statura minore, angustus, elongatus, elytris subfortiter inaequalibus, tomento quasi 

 irregulariter vestitis, nigricans, thorace et nonnunquam aliis partibus piceis aut rufotinctis. 

 antennarum articulis nonnullis basalibus rufescentibus, pedibus pallidis, rufis aut fiavis. 

 Oculi minores. Antennae sat breves, articulo sexto et sequentibus parum fortiter (j') 

 aut haud elongatis. Pronotum quasi irregulariter aureo- aut argenteo-tomentosum 

 desuper inspecto, margine antico juxta angulos laterales nonnihil utrinque prominulo. 

 Elytra angusta, conspicue quasi irregulariter tomento saepius fusco, aureo-nitente, 

 vestita, post apicem striae primae suturam juxta plerumque subfoveata. Long. 



275— 3'25 mm- 



In its typical condition this species is very characteristic, by its narrow form, 



golden clad thorax, and dark tomentum of the elytra, which shines in certain lights with 



golden or other bright reflections. This tomentum, owing to the irregularities of the 



surface of the elytra, appears to leave bare spots, the shape and appearance of which 



change in difterent aspects of the insect. In some examples the elytra have golden 



tomentum, that on the thorax being then still paler or silvery. 



Xyletobms sykesii var. nio/okaicnsis nov. 



Formae typicae persimilis, sed plerumque brevior, pronoto compluribus impres- 

 sionibus fortioribus signato, distinguendus. 



This should perhaps be considered as a distinct race or subspecies rather than 

 a mere variety. The tomentum though variable in depth of colour is for the most part 

 similar on the pronotum and elytra, being golden or silvery or golden-fuscous. 



Hab. Oahu, Molokai, Lanai, Maui, Hawaii. — The type form is from Hawaii. 

 Usually not common. I have seen 40 or more specimens mostly from Hawaii. 



7^—2 



