538 FAUNA HAWAIIENSIS 



Trichoptervx, Kirby and Spence." 



Trichopteryx Kirby and Spence, Introd. to Ent. iii. 1818, p. 40; Matthews, 

 Trichop. p. 112 and pi. xii. 



We have received a single specimen belonging to this genus. Although the elytra 

 cover the body, yet their short truncated form, and the presence of numerous other 

 characters, render it almost certain that the abdomen is unnaturally retracted. The 

 antennae are only moderately long; the head is somewhat deflexed; the pronotum large, 

 with posterior angles produced ; the mesosternum bears a very definite keel ; the anterior 

 coxae are in contact; middle coxae close, but not in contact; hind coxae fairly remote, 

 with a broad rounded lamina all along the outer margin. All these features are charac- 

 teristic of Trichopteryx. The metasternum between the hind coxae has its angles 

 slightly produced, acute: but not drawn out so much as to form sharp teeth such as are 

 found in Actinopteryx. 



(i) Trichopteryx, sp. ? 



Colour piceous, legs testaceous. Punctures numerous, slightly raised. Pubescence 

 conspicuous, rather long. Surface alutaceous. Pronotum slightly wider at the base 

 than the elytra, with hind angles produced. 



Hab. Lanai, 2000 ft., i. 1894 (Perkins). 



Fam. STAPHYLINIDAE. 



Tribe PIESTINI. 



Thoracophorus, Motsch. 



Thoracophorus Motschoulsky, Bull. Mosc. 1837, v. p. 98. 



Glyptoiua (pars) Erichson, Gen. et spec. Staph, p. 908. 



Erichson mixed two very distinct genera under the name of Glyptoma, and it has 

 therefore been necessary to limit his name to a form not found in Hawaii, and the 

 Hawaiian genus becomes Thoracophorus. 



(1) Thoracophorus blackburni. Sharp. 



Glyptoiua b/ackbiiriii ShdLV^, Trans, ent. Soc. London, 1880, p. 53, and Tr. Dublin 

 Soc. III. 1885, |). 224. 



The peculiar sculpture, consisting on the elytra of straight raised lines, is charac- 

 teristic for this genus. The species varies somewhat in size and in the coarseness of 

 the sculpture. Unicolorous brown specimens are occasionally met with ; the result 

 probably of immaturity. 



