20 Mr. T. V. Wollaston on undescribed Madeiran Insects. 



narrower, iind less ovate, than that insect ; its prothorax is di- 

 stinctly smaller, more convex on the disk, and more evidently im- 

 pressed (transversely) behind ; its elytra are very much shorter (a 

 considerable portion of the pygidium being exposed to view), and 

 still more free from indications of longitndinal stria* ; its antennse 

 are even more robust than is there the case ; and its entire colour- 

 ing (as will be perceived from the above diagnosis) is different. 



It may perhaps be desirable to state, that besides the two 

 fore"-oing additions to the ]\ladeiran Colcoptera since the publi- 

 cation of the late corrected Catalogue for the British Museum, I 

 have detected amongst the insects of Mr. Bewicke the common 

 Alphitobius mauritcmims, — which I had accidentally overlooked 

 amongst some specimens of the A. diaperinus which he had for- 

 merlygiven me. Like that insect, it has been clearly introduced, 

 with stores, into those islands ; and it is therefore of no great 

 importance. Still, in conjunction with the two above described, 

 it raises the hitherto-detected species of Madeiran Coleoptera 

 (from 580) to 588. Its synonymy appears to be as follows : — 



Alphitobius mauritanicus. 



Tenebrio mauritanicus. Fab. [nee. Linn. 17^7] Ent. Syst. i. 113 (1792). 

 Tenebrlo Fagi, Puz. Fna Ins. Germ. 61. 3 {\1^9). 

 Tenebrio mauritanicus, Fab. Syst. Eleu. i. 149 (1801). 

 Tenebrio Fagi, Sturm, Deutscli. Fna, ii. 233 (1807). 

 Tenebrio Fagi, Dufts. Fna Austr. ii. 303 (1812). 

 AlphUobius picipes, Steph. 111. Brit. Ent. v. 11 (1833)^. 

 Heterophaga mauritanica, Dej. Cat. edit. 3. 220 (1837). 

 Heterophaga mauritanica, Lucas, Col. de I'Algerie, 341 (1849). 

 Heterophaga Fagi, Redt. Fna Austr. 594 (1849). 



The points in which it differs from the A. diaperinus may be 

 at once gathered by a reference to page 499 of the ' Insecta 

 Maderensia.' 



Ordo ORTHOPTERA. 



Fam. FOEFICULID^. 



Genus Forficula, Linn. 



Forficula edentula. 



F. aptera, valde depressa, fusco-ferruginea vel fusco-picea, glabra, 

 subopaca ; capite postice panic dilutiore ; prothorace subquadrato, 

 ad latera pallidiore, subdiaphano ; elytris valde abbreviatis, apice 

 ccnjimctim profunde cmarginatis ; abdomiue confertim subrugu- 

 Icsc-punctato, segmentis secundo ct tertio plica lateral! auctis, 

 ultimo fere simplici, in fcem. apirem versus distincte sed parce pi- 

 losis ; forcipis cruribus in utroque sexu edentulis, iu S longioribus, 



