304 
(19) Lecanium (Neobernardia) olee Bernard. Kingston. 
(20) Lecanium (Neobernardia) hemisphericum Targ. Kingston. Cockerell and Bath 
(Mrs. Swainson.) 
(21) Mytilaspis citricola (Pack.) on oranges, ete. 
(22) Orthesia prelonga Douglas. Kingston. 
(23) Parlatoria sp. On Acalypha. Kingston. Not studied. 
(24) Parlatoria pergandei var. crotonis Ckll. MS. v. nov. Extremely close to pergan- 
dei, but seems to differ slightly in the arrangement of the plates. On Varie- 
gated Croton. Kingston. 
(25) Planchonia fimbriata Westw. OnAkee. Kingston. Last segmentof 9 reminds 
one of Diaspis. 
(26) Pseudococcus ruber CKll. MS. n.sp. Nearest P. ulicis Dougl. I have no Pseudo- 
coccus to compare this with, but I suppose it to belong to that genus. The 
legs are dark brown. On Euphorbia. Kingston. 
(27) Pulvinaria sp. On Akee. Kingston. Notstudied. 
(28) Vinsonia stellifera (Westw.) Doug]. On Mango. Cumberland Pen. There are 
also about half a dozen other species, not yet examined, belonging to various 
genera.—[T. D. A. Cockerell, Jamaica, Dec. 23, 1891. 
The Broken-tail Snail in Bermuda. 
I now send you specimens of the ‘‘Broken-tail Snail” which is literally 
eating up the island and is very destructive to the gardens and the fields of potatoes. 
We destroy them with salt, lime, and such things, but the surest way is to catch 
and destroy. My gardener spends nearly two hours each morning catching them, in 
a garden of about 10 rods, getting half a bucketful each day. Where they can all 
come from is a question to me, as I have all around my garden a border 10 feet wide 
which is kept perfectly clean and very few snails we can find crawling on this spot. 
Is there any known disease to which these snails are subject and is there any way 
of causing an epidemical scourge among them? At the rate they are increasing they 
will soon have complete possession. Some people have already abandoned their gar- 
dens and given up this struggle for vegetables. * * *—[Gen. Russell Hastings, 
Hamilton, Bermuda Island, March 9, 1892. 
REPLY.— * * * The animal which you call the “ Broken-tail Snail” has never 
been known as a pest within the limits of the United States, although it occurs in 
small numbers near Charleston, 8. C. It is a European species, and has been intro- 
duced into your island. I can make no suggestions regarding remedies which have 
not already been published in Bermuda. * * * I assume that you must have 
seen the little pamphlet recently published by the Board of Agriculture, in response 
to an advertisement offering prizes for descriptions of the history of the Spiral 
Snails, and the most efficacious, expeditious, and economical methods to effect 
theic extermination. The species has been named for me from your specimen by 
Mr. Wm. H. Dall, our best authority on Mollusks, as Rumina decollata LL. With regard 
to the practical use of some disease or some parasite, I may state that I know of no 
disease, and while certain snails are secondary hosts of some Entozoa, unfortunately 
these creatures find their primary hosts in domestic animals, so that they can not be 
utilized.—[March 17, 1892. ] 
Bumble-bees and the Production of Clover Seed. 
Do Bumble-bees have anything to do with the production of clover seed? * * * 
[Mrs. C. H. Pike, Michigan, March 4, 1892. 
REPLY.— * * * Numerous experiments have placed the matter beyond doubt, 
and it is safe to say, with all positiveness, that Bumble-bees are very important 
agents in bringing about the fertilization of clover blossoms, which, as is well known, 
must take place before seed will form, and also tosay that these bees are especially 
serviceable in bringing about cross-fertilization. 
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