CHARACTERISTIC DEEP-SEA TYPES. — CRUSTACEA. 47 
fathoms, represent a new and very peculiar family, of which the 
species are often abundant in deep water. Their exceedingly 
long and very delicate legs, three to four times the length of the 
body, tipped with fascicles of long setze, are apparently intended 
as an adaptation for resting on very soft oozy bottoms. 
New species of the little known genus Oplophorus, and the 
new genera Acanthephyra (Fig. 246), Notostomus, and Menin- 
godora (Fig. 247), make up a group of species of which almost 
nothing was known before the explorations of the “ Blake,” 
although they are very 
frequently taken in the 
trawl at great depths. 
The structure of the 
articular appendages 
of these species is very 
much like that of the 
schizopods and the 
majority of larval ma- 
erurans. Some of the species of Notostomus grow to a large size, 
are very deep erimson when first taken from the water, and 
are among the most striking of all the abyssal Caridea. 
The only Penæidæ which have been as yet described are from 
Fig. 248. — Benthecetes Bartlett, 4. (S. 1. Smith.) 
off the Atlantic coast of the United States. These, though few in 
number, are very interesting. Benthecetes Bartlett (Fig. 248) 
