West- India 71 Corylopliida^ and Trichopterygulie. 337 



Ono specimen of tliis ratlicr obscure aiul uninteresting 

 species was found in Grenada. It is cliielly distiuj^uishcd by 

 its very short antennae. 



Arthrolips nitidus, sp. n. 



L. c. OS'} mm. Oblonjjo-ovabs, anp;ustus. nitidissimus, minute et 

 remote punctatus, baud pubesceiis, palUde castjineus; ])ronoto 

 parvo ; clytris longi8 ; pcdibus atque antennis flavis. 



This species is distinguisbcd from the preceding by its 

 small thorax, long narrow elytra, and remote ])uiictation. 

 One specimen only was found near St, John's River in 

 Grenada. 



Sericoderu8 minutus, sp. n. 



L. c. 0*70 mm. Subovatus, sat angustus, obscure flavus, anrco- 

 pubpscens ; pronoto glabro, nitido ; elvtris postico attenuatis ; 

 pedibus obscure flavis ; autcnuis sat brevibus, obscure flavis, clavis 

 infuscatis articulo ultimo profunde excavate. 



S. minutus is an unusually distinct species of this ])crplexing 

 genus ; it may be known from others by its small size and 

 dusky colour, and seems to be exceedingly abundant in these 

 islands. 



Corijlophodes pusi/lus, sp. n. 



L. c. 0-75 mm. Hcmispboericus, nitidissimus, fere impunctatus, 

 nigcr ; pronoto plus minusve translucide testaceo ; pedibus atque 

 antennis sat brevibus, pallide fiavis. 



This small species may be recognized by its very shining- 

 smooth surface, black elytra, and more or less testaceous 

 thorax. It seems to be rare, only eight specimens having 

 been taken in Grenada and St. Vincent, of which several are 

 immature and discoloured. 



Rhypohius dissimilis, sp. n. 



L. c. 0'75 mm. Ovatus, valde convexus, nitidissimus; pronoto 

 impunctato, nigrescenti ; elytris piceis ; pronoto atque clytris 

 marginatis ; pedibus atque antennis Wte flavescentibus. 



R. dissimilis differs much in form from the more typical 

 species of its genus ; but since having dissected two indi- 

 viduals, and found no difference whatever from the normal 

 character of the organs of the mouth, especially of the curious 

 linear mandibles, nor in the relative proportion and disposition 

 of the various parts of the external skeleton of the underside, 



