2 86 FAUNA HAWAIIENSIS 



(2) Metrocidiuni adiuirandiini, sp. nov. 



Latum, convexum, nigrum, nitidum, antennarum basi pedibusque testaceis ; elytris 

 pallidis, plaga maxima communi nigricante, profunde regulariter punctato-sulcatis ; pro- 

 thorace fortiter transverse, polito, margine laterali abnormaliter elevata. Long. 3^ mm. 



This little insect is one of the most remarkable of the Hawaiian Carabidae. The 

 antennae are rather dusky red at the base, becoming darker towards the extremity. 

 Thorax strongly transverse, very polished and shining, with a slight brassy reflection, 

 the lateral margin remarkably broad and outstanding, the median channel distinct, the 

 sides much narrowed behind, the hind angles reflexed ; a very deep small depression 

 close to each, and some other inequalities about the base. Elytra very regularly oval, 

 beautifully sculptured, with broad, deep, punctate striae extending nearly to the tip : 

 the short supernumerary scutellar stria absent. Only one example has been discovered. 



H.\B. Kauai. High plateau, August 1896 (Perkins). 



Nesomickops, gen. nov. 



Oculi subobsoleti, parvi, nigrantes. Caput angustum. Elytra Integra. 



This genus and M acr anil his o^&r a very interesting transition to the blind condition 

 exhibited by small Bembidiids in various parts of the world. They agree with Anillus 

 in having the elytra entire, completely covering the after-body, and the affinities are 

 doubtless with the eyeless Anillus, rather than with the more numerous forms allied 

 to Scotodipmts. In Nesomicrops the small eyes are black, and imperfectly faceted ; 

 moreover under the microscope the pigment appears to be wanting here and there. The 

 mouth parts seem to be quite ordinary, the mandibles well-developed without any proce.ss 

 externally. The short frontal grooves are widely separated, the clypeus large, the 

 intraorbital setae normal. The thoracic setae are largely developed. The other parts 

 exhibit no peculiarity that is not also present in Nesocidium. The small forms of that 

 genus — -N. scydmaenoides e.g. — are doubtless the nearest allies. 



(i) Nesomicrops kaitaiensis, sp. now 



Augustus, pallide ferrugineus, antennis, palpis pedibusque flavis ; elytris subtiliter 

 striatis, striis obsolete punctatis. Long. 2^ mm. 



Antennae moderately long and stout, red, with the base paler. Thorax nearly as 

 long as broad, gently rounded at the sides and feebly sinuate at the hind angles, which 

 are minutely prominent to carry the seta ; the median channel is distinct, the anterior 

 impression obsolete, the surface depressed, adjacent to the hind angles, without punctua- 

 tion. Elytra long and narrow, rather dull, with feeble striae which become obsolete 

 behind except the sutural one, the pair of impressions on the third interstice present, the 

 anterior of the pair distinct, the posterior very small, placed just about the middle of the 

 length. Legs pallid, feeble. Four specimens. 



Hai;. Kauai. High plateau, August 1896 (Perkins). 



