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served to maintain tte distinctive character of the Bound 

 Island Faura. It is, Colonel Pike tells me, Cyclostoma Jioee- 

 miostoma, double the size and differing in colour from the C. 

 Listeri found here at Bale du Cap ; whilst it is in turn not 

 half so big as a somewhat similar land shell from Eodrigues 

 in my possession. Colonel Pike failed to find it on Flat 

 Island, but I picked up several dead shells on a trip I made 

 thither some years, since, and I remember Mr. Caldwell, a 

 good authority on the subject, telling me at the time, that 

 they were identical, as they in fact appear to be, with the 

 Eound Island species. 



On the latter Islet, they are most abundant in the Porest, 

 the ground being strewn with dead ones at the time of our 

 visit, probably owing to the droupsht. 



Taking next the articulated section of invertebrate animals, 

 it may be stated that the Spiders in the Islet are both nume- 

 rous and interesting. 



Knowing very little of Entomology myself, I am indebted 

 to Colonel Pike for the copious notices to be found in his 

 paper of the four kinds which he captured. They belong to 

 as many distinct families, two of which are Mauritian, and 

 two not ; the former resembling species common here, but 

 not being quite identified by the Colonel, 



The four largest specimens at first supposed by him to form 

 two distinct species, he refers to the genus Phrynus which is 

 I believe a subgenus of the Tarantulas a formidable class of 

 Spiders quite unknown here, though the Indian " PJialangium 

 reniformis " is found at Seychelles. "With this however Col, 

 Pike does not consider the Round Island species dentical, but 

 believes it rather to be new, as nothing like it is described in 

 the large work of Vinson, on Mascarene Arachnids which he 

 has examined. 



The transition from this genus to the Scorpions, which are 

 simple Spiders with tails, is easy, and in this department again 

 the Islet will be seen richly represented. 



Three species are in the case, all, according to Colonel Pike, 

 differing from any he has met with in this part of the world, 

 vizt : a small brown one from the Vacoas, one originally of a 



