RHIZOPHAGIDJE. 113 



Fam. 16. KJIIZOPHAGIDJE. 



Genus 102. RHIZOPHAGUS. 

 Herbst, Kiif. v. 18 (1793). 



317. Rhizophagus pinetorum. 

 Rhizophagus pinetoruin, WolL, Cat. Can. Col. 118 (1864). 



Habitat Canarienses (Ten., Palma, Hierro), lignum vetustum Plni 

 canariensis in pinetis destruens ; hinc inde vulgaris. 



A Canarian Rhizophagus which appears to be attached to the 

 Finals of intermediate and lofty elevations, where it occurs beneath 

 the bark and within the rotten wood of the Pinus canariensis. 

 Under such circumstances, it is locally abundant in Teneriffe and 

 Palma; and it was found by the Messrs. Crotch, in the Final, in 

 Hierro. We may expect, indeed, to meet with it wherever the 

 ancient Finals still exist. It is closely allied to the R. ferrugineus 

 and perforatus of more northern latitudes, and might possibly be re- 

 garded as a geographical modification of either of them ; though, of the 

 two, I think perhaps that it has more in common with the former. 



318. Rhizophagus subopacus. 



Rhizophagus subopacus, WolL, Cat. Can. Col. 119 (1864). 



Habitat Canarienses (Palma), in locis similibus ac praecedens, sed 

 multo rarior. 



Of precisely the same habits as the last species, though very much 

 rarer the few examples which I have seen having been captured 

 beneath the bark of pine trees in Falma, of the Canarian Group. 



319. Rhizophagus bipustulatus. 



Lyctus 2-pustulatus, Fab., Ent. Syst. i. ii. 503 (1792). 

 Ryzophagus bipunctulatus, Hbst, Kdf. v. tab. 45. f. 9 (1793). 

 Rhizophagus bipustulatus, Erich., Nat. derlns.Deutsch. iii. 234 (1845). 

 Rhyzophagus bipustulatus, Woll., Cat. Mad. Col. 42 (1857). 



Habitat Maderenses (Mad.}, sub cortice laxo in castanetis parce 

 occurrens. 



The European R. bipustulatus occurs sparingly in Madeira proper, 

 for the most part beneath the bark of Spanish chestnut-trees on 

 the mountains above Funchal ; but it has not been observed in any 

 of the other islands. 



