INSECTA MADERENSIA. 153 



domo quadam ad Seisal, mense Julio a.d. 1850, primus detexit Rev''"'' Dora. Lowe ; sed plmima 

 specimina a Dom. Hartung Madera ablata nuper cl. Dohrn communicavit. 



L. narrow, linear, cylindrical, brown or reddisb-brown, pubescent, and but very slightly shining. 

 Head and jn'othorax coarsely and rather closely punctured : the former widest about the eyes, 

 which are very large and prominent : the latter elongated, a little narrowed and straightened 

 posteriorly, and with the anterior angles considerably enlarged (although obtuse) and downwardly 

 produced; the sides minutely crenulated; convex in front, where there is no appearance of a 

 dorsal channel, but with a wide and more or less shallow longitudinal depression on the hinder 

 disk. Elytra ferruginous, being paler and more rufescent than the head and prothorax; obso- 

 letely and finely striate-punctate, — the strise being tolerably apparent towards the outer portion, 

 but vanishing near the suture ; the interstices minutely punctulated ; entire and roimded at the 

 apex. Antenna and legs concolorous with, or perhaps a little darker than, the elytra. 



The present Lyctus lias in all probability been naturalized in these islands, it 

 being an insect which, from its habits, is liable to constant transmission through- 

 out the world : nevertheless, since it would appear to establish itself with greater 

 facility in subaustral than in northern regions, it may perhaps be truly indigenous 

 on the southern Mediterranean limits, — in which case it is just possible that 

 Madeh-a may come within its legitimate range. It is my belief, however, that it 

 has been imported from other countries, — an hj^iothesis which is somewhat 

 strengthened by the fact that it is never found, so far at least as I am aware, 

 except either in or near the villages and towns, whilst most of the specimens 

 which have hitherto turned up were captured in the houses themselves. The 

 first example which came beneath my notice was detected by the Rev. E. T. Lowe, 

 dm-ing July 1850, in a Quinta at Seisal : and it was not untU June of the follow- 

 ing year that it again occm-red, — when a second was communicated by M. Dohrn 

 of Stettin, which had crawled out of a di-ied skin which had been prepared in 

 Madeii-a by M. Hartimg. About the same time, moreover, I received it from 

 Mr. Leacock, — taken in Funchal; and within the last month M. Dohrn has 

 informed me that it has been reared in abundance at Konigsberg, from larv« 

 which have been lately brought away from the island. In its habits, it would 

 seem, to a certain extent, to combine the dermaphagous tendency of Trogositu 

 with the Hgnivorous propensities of the true I/ycti, since it is, apparently, able to 

 adapt itself to even dried animal food. Still, like the common European L. cana- 

 liculatus, it is normally attached to wood, — from out of which indeed M. Dohrn 

 states that the Konigsberg specimens were produced. 



Fam. 12. TROGOSITIDiE. 



Genus 53. TROGOSITA. 



Olivier, Ent. ii. 19 (scrip. Trogossita) (1790). 



Corpus mediocre, elongatum : protkorace ssepius subcordato, angulis anticis productis : alts amplis. 



X 



