118 Mr. T. V. Wollaston on undescrihed Madeiran Insects. 



in medio, serie curvata punctorum nigrorum pone medium, linea 

 transversa nigra fere ad marginem postremum ; alis posticis albi- 

 dis, immaculatis. — Exp. alar. 171 lin. 



Inhabits Madeira proper, and has probably been imported 

 into the island, being extremely destructive to the sugar-canes. 

 The caterpillar, which may be taken during the summer months, 

 lives in the interior of the stem, where it does incalculable da- 

 mage to the cane, — more or less spoiling the entire crop. I am 

 indebted for an excellent specimen of the imago to C. Bewicke, 

 Esq., who reared several of them in Funchal during the autumn 

 of 1855, and who communicated to me some interesting obser- 

 vations concerning the habits of the insect. It appears totally 

 distinct from the Diatraa sacchari of the Rev. Lansdown Guilding 

 (Trans, of the Soc. of Arts, vol. xlvi. p. 148, a.d. 1828) ; as also 

 from the Proceras sacchariphaguSj Bojer (described in the ^ Re- 

 port of the Committee on the Cane-borer,' and published at the 

 Mauritius), which belongs to an altogether different family, the 

 Pyralidce ; as well as from the Noctua sacchari of the ' Papillons 

 de Surinam' (pp. 135, 136. pi. 64. a.d. 1848). 



Fam. GEOMETRID-ffi. 

 Genus Hemithea, Boisd. 



Hemithea nuhigena. 



II. alis viridibus, striga posteriore alba communi subindistincta or- 

 natis, costa alarum anteriorum albido-ochracea. — Exp. alar. 9 lin. 



Inhabits Madeira proper, occurring among the heath-woods 

 of the loftiest elevations. Whilst encamped on the extreme 

 summit of the Pico Ruivo (upwards of 6000 feet above the sea) 

 early in August 1850, it flew into my tent in great abundance, 

 attracted by the light of the candle, after sunset. 



Genus Eubolia, Boisd. 



Eubolia rupicola, 



E. alis anticis fuseis, saturatiore lineatis, striga anteriore parum an- 

 gulata, striga posteriore (extus dentem emittente et albido-mar- 

 ginata), punctis dilutis, maculisque duabus marginem posticum 

 versus nigro-fuscis ornatis. — Exp. alar. 16 lin. 



Inhabits Madeira proper; abounding at intermediate eleva- 

 tions throughout the sylvan districts ; and secreting itself ge- 

 nerally beneath the overhanging projections of the rocks, which 

 it more or less resembles in colour. 



