COLEOPTERA 219 



(9) Atclothnis liawaiicnsis, sp. nov. 



Nigricans, corpore subtus, antennis, thoraceque rufis, illarum basi, palpis pedibusque 

 fiavis ; thorace basin versus angustato, hand sinuato, angulis posterioribus obtusis ; 

 elytris margine laterali flavo, profunde striatis, ad apicem sat profunde sinuatis. Long. 

 Corp. 6i mm. 



We have only one specimen — a male — of this obscure insect, and some doubt exists 

 as to its belonging to the genus Atelotlij-jts, as there is a fovea for a thoracic seta at the 

 left angle only of the thorax ; if this is not really a fovea, but due to a small piece being 

 chipped out of the thoracic margin by some accident, the specimen will be referable to 

 the genus Metroniemts. As the supposed fovea exists in exactly the normal situation, 

 it is probable the individual is really correctly placed in Atclothnts and I describe it, 

 notwithstanding the doubt that exists about it, because it indicates an extension of the 

 genus to the island of Hawaii. 



The species is not at all closely allied to any other Atclothnts, but is extremely 

 similar to Mesothriscus haivaiiensis, from which it differs however by its shorter thorax, 

 which also is rather broader at the base. It has but little resemblance to A. filipes, the 

 hind tarsi being considerably thicker, though the fourth joint is not in the least lobed. 



W.\v>. Hawaii (Perkins). Kilauea, August 1896. No. 656. 



(10) Atclothnis gracilis, sp. nov. 



Nitidus, niger, antennis, palpis pedibusque flavis ; prothorace parum elongato, basin 

 versus satis angustato ; elytris anguste ovatis, ad apicem parum sinuatis, apicibus parum 

 prolongatis, sat profunde striatis. Long. corp. 7 mm., antennae vix 4 mm. 



Closely allied to A. dcprcssus, but with smaller thorax less narrowed behind, and 

 rather narrower elytra, which are scarcely more sinuate, but are rather more prolonged 

 at the tip. The hind tarsi are shorter, but their fourth joint is quite as long and as 

 distinctly bilobed as it is in A. deprcssus. The fifth and sixth striae are connected at 

 a rather greater distance from the tip than they are in A. depressus. The species is 

 also extremely similar to A. longulus, from which it is readily distinguished by the 

 distinctly bilobed fourth joint of the hind feet. A. filipes is also very similar, but in it 

 the fourth joint is not bilobed. 



Hab. Maui (Perkins). There is some doubt as to the exact locality of this 

 species. The specimens (11 in number) are marked with the number 357, the entry 

 corresponding to which is " Haleakala, 4000 ft., iv. 94." There has, however, been 

 a mistake in connection with this number, as several insects bearine it are also labelled 

 " West Maui mountains." This is probably the actual habitat of these specimens of 

 A. gracilis. In addition to them Mr Perkins has recently found two specimens on 

 Haleakala (3000 ft.) that are a little larger, but are apparently the same species. 



No. 1232, Prof Thaxter for Laboulbeniaceae. 



