10 Mr. II. Scott on Corylophidag/rowj the 



Colour : tliorax j)itclij black, with front margin ratlier 

 broadly reddish testaceous ; elytra pitchy black, with two 

 broad transverse reddish-yellow fascite, the anterior or both 

 of Avhich may be narrowly interrupted by darker colour at 

 tlie suture, thus almost forming four separate marks; in one 

 example the scutellum is included in the anterior pale fascia, 

 ill another it is darker; metasternum and first abdominal 

 segment pitchy black, posterior segments paler ; underside of 

 thorax, legs, and anteimse reddish yellow, clubs of the an- 

 tennge not black. I'horax and elytra closely and very finely 

 punctured, the punctures twice their own diameter, or rather 

 more, apart ; the thorax has no distinct basal series, but an 

 impressed line immediately before the base ; sutural stria 

 present but vanishing in nearly the anterior \ ; lateral mar- 

 gins of elytra reflexed through about -| the length from the 

 shoulder, visible from directly above. Wings apparently 

 ample, but not dissected out. Metasternum and abdomen 

 finely and closely punctured and pubescent. 



Prosternuin (Fl. I. fig. 6) much longer than in Saciuvi 

 picaultianum, forming in front of each coxa a bridge about 

 half as broad in an antero-posterior direction as the dimen- 

 sions of the coxas in the same direction, and having a 

 sharply elevated median longitudinal keel. A balsam- 

 preparation of the mouth-parts shows that the mentam 

 (PI. I. fig. 5) is broader, not pointed in front, more like 

 Matthews's figure (pi. i. D 6). 



Several species resemble this in general scheme of coloui', 

 hut its pubescent surface distinguishes it in many cases, and 

 I have seen none very closely similar to it. Among the 

 other Seychelles species it is abundantly distinct from 

 S. picaultianum by its pubescence, its narrower form, finer 

 punctuation, longer prosternum, by the confluence of the 

 light marks on the elytra to form transverse fasciae, &c. 



Loc. Seychelles: Silhouette Island. 



Three examples, fiom the same place as most of the pre- 

 ceding species, the Mare aux Cochons plateau or near by, 

 ix. liiOb. 



J^amed in memory of Captain Grossin, a member of 

 Picault's exi>edition to the Seychelles in 17-42. 



3. Sacium roslanianiim, sp. n» 

 (PL I. figs. 7 & 8.) 



Late ovale, supra nitidissimum, tote glabrum, modice sat dense 

 punctatum ; piceo-iiigrum, margine anteriore thoracis late pallide 

 testaceo, elytro utroque macula singula media rufo-tiaya, cori)or© 



