5i8 FAUNA HAWAIIENSIS 



(5) Acritus kauaiensis, sp. nov. . 



Oblongo-ovalis, nitidus, piceus, antennis pedibusque fusco-testaceis; capite sutura 

 transversa ante antennis distincta, his parce punctatis; prothorace elytrisque crebre 

 punctatis, his ad apicem loni^ntudinahter ru^osis ; propygidio ac pygidio crebre subtiliter 

 punctatis; prosterno sat longo, striis per totam longitudinem leviter divergentibus; 

 mesosterno nullo modo impresso, crebre punctato ; metasterno crebre ac sat fortiter, in 

 medio obsolete, punctato. Long. corp. if mm. 



This species is by far the largest of the Hawaiian members of the genus, and very 

 distinct. The surface between the punctures is smooth and shining. A distinct 

 transverse suture just in front of the antennae is jjresent. Punctures on the thora.x 

 numerous and evenly distributed, not very large or very close : the extreme base of the 

 thorax also is punctuated, but there is no special basal sculpture such as is found in many 

 congeners. Punctures on the elytra slightly stronger than on the thorax, towards the 

 apex drawn out into rugosities. Oblique elytral striae not present. Keel of the 

 prosternum (PI. XV. fig. 5) about twice as long as broad at the base, slightly convex, 

 the striae diverging gradually from the l^ase throughout their length. Mesosternum 

 without any impression, its surface quite continuous with that of the metasternum ; its 

 maroinal stria continuous, but shallower in front in the middle ; meso-metasternal suture 

 very faint. Meso- and metasterna and first abdominal segment with numerous rather 

 strong punctures, except in the middle part of the metasternum, where they become very 

 small. Wings not reduced (PI. X\'. fig. 6). 



Eighteen specimens. One, probabl)- immature, decidedly smaller and lighter 

 coloured than the rest. 



Had. Kauai. Most from aliove Waimea, 4000 ft. &c. (no. 273); some from 

 Koholuamano, and some labelled "high plateau," nos. 526, 682 ; (Perkins). 



(6) Acritus molokaiae, sp. nov. 



Oblongo-ovalis, ferrugineo-piceus, aegre nitidus linea transversa ante antennis vix 

 distincta ; prothorace elytrisque crebre ac sat subtiliter punctatis. his ad apicem subtiliter 

 rugosis; pygidio crebre .subtiliter punctato; prosterno sat longo, subtiliter punctato, striis 

 antice conspicue divergentibus ; mesosterno crebre punctato. Long. corp. i^ mm. 



A single specimen, of red-brown colour, darker along l^ase of thorax and elytral 

 suture. Under a very high |)Ower the transverse suture in front of the antennae is 

 scarcely visible, while in A . pnnctatus, kukniac and iiiauiae it is quite distinct even under 

 a lower power. The species is further distinguished b)- the fineness of the punctures 

 evenly distributed on prothorax and elytra, and the form of the keel of the prosternum. 

 This is nearly twice as long as the breadth at the base, and the striae diverge in front so 

 that the width of the front margin nearly equals the length of the keel. As in the three 



