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 setae, 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 



** m ' 



<* * ***> 



majority of larval ma- 

 crurans. Some of the species of Notostomus grow to a large size, 

 are very deep crimson when first taken from the water, and 

 are among the most striking of all the 'abyssal Caridea. 



The only Penseida3 which have been as yet described are from 



Fig. 248. Benthcecetes Bartletti. \. (S.I. Smith.) 



off the Atlantic coast of the United States. These, though few in 

 number, are very interesting. Benthcecetes Bartletti (Fig. 248) 



