264 FAUNA HAWAIIENSIS 



(25) Cis diminutivus Sharp. 



Cis dimimitivtts Sharp, Tr. Ent. Soc. London, 1879, p. 94. 



Hab. Oahu. Two examples were taken on Konahuanui by Mr Blackburn ; we 

 have not met with this species, which appears to be quite distinct. 



(26) Cis evanescens Sharp. 



Cis evanescens Sharp, Tr. Ent. Soc. London, 1S79, p. 95. 



This minute species is easily distinguished from any but the following species by 

 the very feeble and fine, often hardly perceptible, puncturation of the prothorax. In 

 some examples the prothoracic punctures though sparse and feeble are distinguishable, 

 in others the surface is practically impunctate, and the surface usually dull. The elytral 

 sculpture is also variable, but always feeble, and consists of a rugulosity of the surface 

 rather than puncturation, and is sometimes hardly perceptible. In some examples the 

 thorax is of a testaceous colour as is usual in the following species. The entire insect 

 is without clothing. Length i — 1*5 mm. 



Hab. Found on all the islands in the mountain forests from 2000 — 4000 ft. 



(27) Cis laeticulus Sharp. 



Cis laeticiihts Sharp, Tr. Ent. Soc. London, 1879, p. 94. 



Resembles C. evanescens for the most part in sculpture, but the elytra are, at least 

 in most examples, decidedly more elongate, and the hinder angles of the prothorax are 

 very slightly prominent and acute. This point of distinction between the two species 

 is generally difficult to appreciate without separating the elytra from the thorax, but 

 appears to be quite constant. In typical examples the prothorax is of a pallid colour 

 and contrasts greatly with the elytra, which also are sometimes pale on their apical 

 portion. Examples from Lanai probably referable to the same species have the elytra 

 and thorax concolorous, or at least the latter is not much paler than the former. One 

 of these Lanai examples, however, hardly differs from the typical examples, although 

 the individuals were all taken in company. Length 12 — v^ mm. 



Hab. Oahu and Lanai. Probably on all the islands but not collected on the 

 others. If I remember rightly the species is found on withered leaves of Freycinetia, 

 where it no doubt feeds on some species of fungus. 



