96 



PTILIAD^E. 



though its minute size renders it liable to escape observation. It 

 abounds in Madeira proper, under vegetable refuse and amongst 

 dense herbage, at low and intermediate altitudes ; and I met with 

 it even on the Deserta Grande. At the Canarian Group it has been 

 found in Fuerteventura, Grand Canary, Teneriffe, and Gomera. In 

 Teneriffe it was captured in profusion by the Messrs. Crotch. 



Fam. 13. PTHJADJE*. 



Genus 87. ACROTRICHIS. 

 Motschulsky, Bull, de Mosc. xxi. 569 [script. Acratrichis] (1848), 



271 . Acrotrichis fucicola. 



Trichopteryx fucicola, Allibert, in Rev. Zool. 52 (1844). 



, Fairm. et Lab., Faun. Franq. 332 (1854). 



mollis, Holiday, in Nat. Hist. Rev. ii. (Proc.} 123 (1855), 



Acrotrichis fucicola, WolL, Cat. Can. Col. 102 (1864). 



Habitat Canarienses (Lanz., Fuert., Can., Ten.), sub fucis per oras 

 arenosas maritimas hinc inde sat vulgaris. 



This European insect occurs beneath marine rejectamenta along 

 the sea-shores at the Canaries, but it has not yet been observed in 

 the Madeiran Group. I have taken it commonly in Lanzaro-te and 

 Fuerteventura ; and it was found by the Messrs. Crotch (during the 

 summer of 1864) near Las Palmas in Grand Canary, as well as by 

 Dr. Crotch previously in Teneriffe, in both instances, however, 

 sparingly. 



272. Acrotrichis umbricola. 



Acratrichis umbricola, WolL, Ins. Mad. 108 (1854). 

 , Id., Cat. Mad. Col. 35 (1857). 



Habitat Maderenses (Mad.), in sylvaticis editioribus sub quisquiliis 

 foliisque dejectis. 



A large and distinct species which appears to be peculiar to the 

 sylvan regions of Madeira proper, where it occurs (under fallen 

 leaves, &c.) principally at a high altitude. 



From a communication which I have lately received from the 

 Ilev. A. Matthews, I gather the remarkable fact that the present 



* I should state that all the species which are here recorded for the Ptiliadce 

 have been examined most critically by the Rev. A. Matthews, who is well known 

 to have studied these minute forms with greater care than any other naturalist, 

 and I believe therefore that their synonymy, as now corrected, will be found in 

 accordance with the conclusions at which he has elsewhere arrived in this difficult 

 family of the Coleoptera. 



