CANAKIAN COLEOPTERA. 129 



whole seven islands of which I have myself taken it, except in Go- 

 mera, — where however it was captui'ed, during the spring of 1862, 

 by Dr. Crotch, In Lanzarote and Hierro it was found also by Mr. 

 Gray; and, on the 11th of March 1859, I met with it even on the 

 little island of Graciosa, off the extreme north of the former. It is 

 confined exclusively to the rotten Euphorhia-stems, on which it sub- 

 sists (in company with the AphanartJira, and the various other in- 

 sects peculiar to those plants), and where it frequently abounds. 



219. Europs duplicatus. 



Europs duplicatus, WoU., Trans. Ent. Svc. Loud. (3rd series) i. 146 

 (1862). 



Habitat Gomeram, in plantis putridis Euphorblce canariensis in 

 collibus supra San Sebastian repertus. 



It is somewhat remarkable that whilst failing to take the last spe- 

 cies in Gomera, I should have captured the present one in its stead. 

 As already stated, however, I have no doubt that the E. impressi- 

 collis is found in Gomera no less than in the other portions of the 

 Group, and that consequently my meeting with the present Europs 

 during our short stay in that island was merely accidental. Be this 

 however as it may, I should state that the E. duplicatus (which, 

 apart from all other differences, may be immediately recognized from 

 its ally by having its prothorax free from a longitudinal impression, 

 the place of which is occupied by two parallel rows of punctures) 

 was taken abundantly from out of the putrid stalks of Euphorbia 

 canariensis on the summit of a hiU immediately to the south of San 

 Sebastian, during February 1858. 



Fam. 16. CUCUJID^. 



Genus 91. CAULONOMUS. 

 WoUaston, Trans. Eat. Sac. Land. 147 (1862). 



220. Caulonomus rhizophagoides. 



Caulonomus rhyzophagoides, Wall., Trans. Ent. Sac. Lond. (3rd series) 

 i. 149. pi. 7. f. 2 (1862). 



Habitat in Lanzarota, Teneriffa et Hierro, in truncis Euphorbiarum 

 emortuis una cum genere Europs degens, sed multo rarior. 



This interesting beetle (which I have described carefully in my 

 Memoir on the " £'M^)7to/-6ia-infesting Coleoptera of the Canaries ") is 

 confined exclusively to the rotten Euphorbias, within the decayed 

 stems and branches of which it resides,— in company with Europs, 



K 



