300 GASTEROPODKES. 
1. Eouis pLumata—The Feathered Eolis —Plate XLIV. Figs. 1, 2. 
This animal extends about half an inch when crawling. The body 
slender, covered by a remarkable profusion of branchiz, disposed in 
eleven or twelve rows, leaving only a portion of the back bare, behind 
the head. These are long and slender, and extend considerably over the 
posterior extremity. Representation of the whole is precluded, from 
their number. They bear no indifferent resemblance to a feathered cloak 
in the arc. The shoulder is somewhat enlarged.. Colour universally 
greyish ; tips of the branchie clear. Only a single specimen has occurred. 
Prats XLIV. 
Fie. 1. Holis plumata, back. 
2. Belly. 
2. Eouis rAcEMosA—Cluster Holis.—Plate XLIV. Figs. 3, 4, 5. 
Length four lines ; breadth under one. Head roundish, with a ten- 
tacular organ from each side. Body slender; shoulder enlarged. A black 
speck or eye at the base of each of the cornicula. Three o#four pair of 
clustered branchiz border the back, leaving the remainder bare. The 
first is composed of ten enlarging elongated papillz, of various dimen- 
sions, as are those of all the others. 
Colour whitish, with dark brown specks scantily distributed. <A 
brown belt encircles the middle of each corniculum. 
This is a lively animal ; its adhesion is slight, and it is very rare, 
only one specimen having occurred. 
Puate XLIV. 
Fic. 3. Holts racemosa, back. 
4, Belly. 
5. Cluster branchize, more enlarged. 
