MADEIRAN COLEOPTERA. 49 
a character which it is impossible to mistake. The two specimens 
(both of which may perhaps be females) from which the above de- 
scription has been compiled were captured by myself, from beneath 
the loosened bark of a felled tree, in the north of Madeira proper (in 
the remote forest-region of the Lombo dos Pecegueiros), during July 
of 1855. 
Genus 51. COSSYPHODES. 
Westwood, Trans. Ent. Soc. Lond. (New Series) i. 168 (1851). 
My attention has been lately drawn by T. 8S. Leacock, Esq., of 
Funchal, whose accurate powers of observation I have more than 
once profited by, to my remark (borrowed from that of Mr. West= 
wood, by whom the genus was originally described), in the Insecta 
Maderensia, that the eyes of Cossyphodes are obsolete,—stating, 
that they appear to him to exist within the small oblique line with 
which either side of the head is furnished posteriorly. I have 
therefore examined, again, very closely, the structure formerly al- 
luded to; and Iam now inclined to agree with Mr. Leacock, that the 
eyes are certainly present,—though in so small and rudimentary a 
state that I doubt whether they can be of much assistance for the 
purpose of vision, or whether they could be defined as more than sub- 
obsolete. That they are immersed, however, within this somewhat 
horizontally impressed line, at its commencement, seems certain ; 
nevertheless they are so minute, and so nearly concealed by its upper 
edge, that I am scarcely able to detect anything like facets on the 
small portion of their surface which is exposed to view; and I sus- 
pect therefore that the insect must be still regarded as blind,—or, at 
any rate, nearly so. 
140. Cossyphodes Wollastonii. 
Cossyphodes Wollastonii, Westw., Trans. Ent. Soc. Lond. (New Se- 
ries) i. 170 (1851). i 
, Woll., Ins, Mad. 146. tab. iii. f. 3 (1854), 
Inhabits the south of Madeira proper, occurring in and near ants’ 
nests (especially those of @eophthora pusilla, Heer) around Funchal. 
Very rare. 


Genus 52. PLQ@OSOMA. 
Wollaston, Ins. Mad. 147, tab. ix. f.9 (1854), 
141. Pleosoma ellipticum. 
Ploosoma ellipticum, Woll., Ins. Mad. 148. tab. ix. f.9 (1854). 
Inhabits the sylvan regions of Madeira proper, occurring beneath 
E 
