INSECTA MADERENSIA. 613 



extremely short and subequal. They are principally to be found on flowers, or 

 under the loose bark of trees ; though a few occur beneath stones and decaying 

 vegetable refuse, — especially in alpine and maritime districts. 



§ I. Palpi maxillares articulo ultimo suhacv/minato-fusiformi : iihice suhtiliter spinulosce. 



479. Omalium ocellatum, Woll. 

 O. fusco-piceum subpunctatum, capite ocellis magnis flavis instructo, prothorace insequali, limbo 



elytrisque diluto-testaceis, antennarum basi ferruginea, pedibus testaceis. 

 Long. Corp. lin. \\. 

 Habitat in ins. Deserta Boreali, a meipso Junio ineunte a.d. 1850 repertum. 



O. subovate-oblong (being a little expanded posteriorly), brownisli-piceous, and slightly shining. 

 Head, prothorax and elytra rather coarsely subpiinctate ; the first uneven ; with the anterior 

 angles raised and rather prominent (their lateral edges being slightly elevated, and produced ob- 

 liquely backwards on to the forehead) ; vA\h the clypeus obtusely rounded in front ; and with 

 two large ocelli of a bright yellow hue on its hinder disk : the second transverse, a little narrowed 

 behind, and with its posterior angles almost right angles ; likewise exceedingly uneven, but with 

 indications of a larger longitudinal depression on either side of its disk ; its margins (especially 

 the lateral and basal ones), together with the elytra, diluted-testaceous. Antenna rather paler 

 than the head, and bright ferruginous at their base. Legs testaceous. 



Readily known from the following species by its much greater bulk and pro- 

 portionably wider outline, by its paler, subpitnctiu"ed and more imeven surface, 

 and by the larger (and bright yellow) ocelli mth wliich the hinder region of its 

 forehead is fiu'uished. The specimen from which the above description has been 

 compiled is hitherto unique, — having been captiu^ed by myself on the Northern 

 Dezerta, or Ilheo Chao, during my encampment on that island, Avith the Rev. 

 R. T. Lowe, at the beginning of June 1850. 



§ II. Palpi maxillares articulo ultimo graciliore suhcylindrico : tibia vix spinulosce. 



480. Omalium granulatum, Woll. 



O. angustum nigro-piceum subtilissime et creberrime grauulatum, capite ocellis parvis picescentibus 

 instructo, prothorace in disco postico profunde longitudinaliter bifoveolato, antennis ferrugineis, 

 pedibus diluto-testaceis. 



Long, coi-p. Un. ^. 



Habitat in Madera boreali sylvatica, rarissime : ad Lombo dos Pecegueiros mense Juho a.d. 1850 

 quatuor specimina inveni. 



O. minute, narrow and nearly parallel, dark piceous, and scarcely at all shining. Head, prothorax 



