10 F Wyman on some unusual modes of Gestation. — 
already described two species, to which we now add a third, J 
All three live in the waters of Guiana and this is all we know of 
their habits.” * 
attached by pressing the under side of the body upon them. 
n those individuals where the ova were still in the ovary, 
pedicles which i tee the eggs and perhaps to the nutrition of | 
ereafter. . 
about two lines in length, is attached to the skin by a slightly ; 
expanded base, and spreads out at its summit into a shallow cup 
* Cuvier and Valenciennes, Hist. Nat. des Poissons. T. xv 
+ See an account of the habits of the Aspredo by Mr. G 
ef the Boston Soc. of Nat. History for April, 1858, 
, p. 430. 
reen in the P 
