X I T I 
Dr. A. Edwards observes that if “ sulphate of lead ” is 
to be found in sufficient abundance at Rodrigues to be 
worked on a large scale, this Island would soon reach the 
height of prosperity. 
Mr. A. Langlois shewed some very fine specimens of 
the <f Leaf Fly ” of which he had succeeded in rearing a 
certain number on his estate at Plaines Wilhems. He 
distributed them among the members present. These in- 
sects undergo several transformations which Mr. Langlois 
had an opportunity of watching, during their domestica- 
ted state, and he has promised at an early meeting to 
make known the result of his observations. 
Dr. Ch. Reguaud exhibited a small green Cicada — 
which he found at Mesnil. He says that one evening, at 
about eight o’clock, he was struck with a sweet aud 
pleasant chirping, and on proceeding to the spot from 
which it emanated, he discovered this Cicada. 
It appears to be a new species, at least, is not included 
among the 06 species described in the “ Encyclopedic 
Methodique” by Olivier. If it be really a new species, it 
might aptly be called, as suggested by Dr. liegnaud. 
Cicada Vesper tina. 
Specimens were forwarded by Col. Pike to the Museum 
of Comparative Anatomy at Cambridge— United States — 
to be determined. 
Dr. Regnaud also called attention to a species of Crab, 
the Varuna litter ata, already kuown, it is true, but whose 
habits, it seems, have hitherto escaped the knowledge of 
the authors by whom it was described. It appears that 
it is often found in fresh water and follows the courses of 
the rivers up to their mouths. It has frequently been 
caught in the Tombeau and Calebasses Rivers and has 
even been seen in the isolated pond on the “ Unite M 
Estate at Pamplemousses. 
