202 FAUNA HAUAIIENSIS 



(4) Disenochus Jlavilarsis, sp. nov. 



Niger-rimus, antennis palpisque rufis, pedibus piceis tarsis dilute rufis ; capite magno, 

 thorace ^haud transverse, basin versus angustato, angulis posterioribus obtusis ; elytris 

 minus^ late subovatis, profunde striatis, striis punctatis. Long. 9 mm. 



Readily distinguished from the preceding species by the darker colour, rather more 

 slender form, and more pronounced elytral sculpture. The only two specimens found 

 are male and female and are extremely similar; the female has the head slightly broader, 

 which seems to be the case also in the other species of this group. 



Hab. Molokai (Perkins): $, 4000 ft., vi. 96 ; ? Kalae, August 1893. 



(5) Disenochus agilis, sp. nov. 



Nigerrimus, antennis palpisque rufis, pedibus piceis tarsis rufis ; capite sat lato, 

 thorace baud transverso, basin versus angustato, angulis posterioribus obtusis ; elytris 

 vix subovatis, profunde striatis, striis punctatis. Long. 9 mm. 



This species has the elytra less ovate than any of the preceding ; it has also the 

 thorax rather longer and narrower than D. flavitarsis and less rounded at the sides. It 

 has therefore not quite the facies of the preceding members of the group, though in ail 

 structural characters it appears to be quite similar ; the longitudinal impression on the 

 middle of the base of the abdomen is particularly well marked. Only two individuals 

 have been found. They are both males. 



Hab. Maui (Perkins): one " Haleakala, 4500 ft., 28. in. 1894"; the second, 

 " Haleakala, 5000 ft., i. iv. 1894." 



(6) Disenochus curtipes, sp. nov. 



Piceus, nitidus, antennis, palpis pedibusque rufis ; capite magno, thorace transverso, 

 basin versus fortiter angustato, lateribus vix rotundatis, versus angulos posteriores basinque 

 subobsolete punctato ; elytris profunde striatis, striis omnium obsoletissime crenatis, 

 interstitiis subinaequalibus. Long. 6 mm. 



This peculiar little insect is not allied to any other species ; the head is large, 

 the eyes prominent, though small ; the hind angles of the thorax are very obtuse, the 

 surface near them largely depressed, so that the lateral margin appears a good deal 

 elevated behind. The strongly elevated striae have the alternate interstices a little 

 more elevated ; this is best seen by looking at the third and fifth close to the basal 

 margin. Two male, one female, specimens. 



In shape and proportions this much resembles Atrachycnemis sharpi, but differs 

 much therefrom in sculpture and the very definite basal margin to the elytra. 



Hab. Kauai (Perkins) : 4000 ft., mountains above Waimea May 1894: October 

 1895 ; July 1S96. 



