COLEOPTERA 



537 



transverse, lato, lateribus baud fortiter declivis, rotundatis, angulis posticis fortiter 

 rotundatis ; elytris suboblongis, fortius nee dense punctatis. Long. | — i mm. 



Larger than any described species of A^cp/iaius, and tfian P. hlackbiirni. Dis- 

 tinguished from all of them by the form of the pronotum : this is transverse, rather 

 broad, not sloping steeply at the sides, with the lateral margins rounded, producing 

 an outline which is strongly curved inwards posteriorly, so that the hind angles are 

 completely rounded off, and may almost be said to be non-existent. 



One specimen differs considerably in appearance ; it is darker, with the abdomen 

 more elongate, and the elytra appearing narrower posteriorly : it seems probable that 

 the difference in form is largely due to the abdomen being much less retracted than in 

 the other specimens. Wings present ; seen in a Canada balsam preparation to have 

 the scape long and narrow, the membranous portion narrow and lanceolate. Seven 

 specimens. 



Had. Kauai, Oahu, Hawaii. — Kauai; mts. Waimea, 4000 ft. — Oahu ; near 

 Honolulu. — Hawaii; Kona, 4000 ft. — (Perkins.) 



(3) Ptiliodcs pnlclicllits, sp. no\'. 



Parum major, laevior, nitidus, niger antennis pedibusque testaceis ; pronoto curto, 

 fere impunctato, postice magis eo P. iiisignis angustato. lateribus et angulis posticis 

 conspicue rotundatis ; elytris fortiter nee dense punctatis, basin versus angustatis. 



A single specimen. Some of the difference in appearance between it and P. insigiiis 

 may be due to the pubescence in P. pitlchcllits being largely rubbed off. But it is 

 clearly distinguished by (i) the form of the pronotum, which is more narrowed posteriorly, 

 the hind angles being even more rounded off than they are in P. insigiiis \ (ii) the curving 

 in of the lateral outlines of the elytra towards their base; (iii) the larger size, the length 

 being slightly over i mm. ; (iv) above all, the shining black surface. 



Hab. Oahu (Perkins). No particulars of capture. 



Ptinella, Motschoulsky. 

 Ptinclla Mots., Bull. Mosc. 1845, p. 505 ; Matthews, Trichop. p. 164 and pi. xix. 



(i) Ptinella pacifica Matthews. 



Ptinella pacifica Matthews, Cist. Ent. iii. 1882, p. 42, and pi. 11. fig. 4; Trichop. 

 Sup. p. 20 : Sharp, 1. c. 



We have not received this species from Dr Perkins. 



Hab. Oahu, under bark in mountain forests (Blackburn). 



69 — 2 



