92 Mr. T. V. Wollaston on the Coleoptera of the Salvages. 



Pam. Helopidse. 



Genus Helops. 

 Fabricius, Syst. Ent. 257 (1775). 



9. Helops Leacocianus, Woll. 



Helops Leacocianus, WoU., Ins. Mad. 5] 7 (1854). 



A single example was taken by Mr. Leacock on the ' Great Pitou ' 

 in 1851. 



Fam. Blapsidse. 



Genus Blaps. 

 Fabricius, Syst. Ent. 254 (1775). 



10. Blaps gages, Linn. 



Tenehrio gages, Linn., Syst. Nat. ii. 676 [script, per err. gigasl (1767). 

 Maps gages, Fab., Ent. Syst. i. 106 (1792). 



-, WoU., Ins. Mad. 508 (1854). 



Several specimens of the common Blaps gages have been lately 

 commimieated by the Barao do CasteUo de Paiva, and were taken I 

 believe on the ' Great Salvage.' It is a tolerably common insect 

 both in the Madeiras and the Canaries. 



Fam. (EdemeridaB. 



Genus Dittlus. 

 Fischer de Waldh., Mem. de la Soc. de Nat. de Moscou, v. 469 (1817). 



11. Ditylus fulvus, Well. 



Ditylus fuhtis, WolL, Ins. Mad. 523 (1854). 



A single specimen of this beautiful Ditylus was discovered by Mr. 

 Leacock on the ' Great Piton ' in the spring of 1851. For the 

 reason given under the Hegeter latebricola, I must decline at present 

 to pronounce for certain whether or not it is identical with the 

 D, concolor of Brulle, which I have recently captm-ed in Grand 

 Canary, Teneriffe, and Palma ; but my belief is, that a careful com- 

 parison will prove it to be conspecific with that insect. 



Such are the eleven species of Coleoptera which have been hitherto 

 detected on these smaU and remote rocks ; and it is interesting to 

 remark, that they are each of them exponents of a separate genus, 



