On Indian Dcej)-sca Drahjing. All 



liump is not yet exhausted. J\[onth and fore-gut also liavc now 

 beconu! more spacious than before, and the mucous nienibrane 

 of the latter exhibits distinct longitudinal folds. j\Ioreover, 

 the fore-gut by this time (eighteenth day) possesses a layer 

 of distinct circular muscle-tibres, which appear to me to be 

 in no way derived from cells of the raesenehyma, but from 

 the enterocoele-eells which lie closely upon the fore-gut. 

 From the mid-gut an anterior portion is constricted oif, which 

 becomes the stomach of the adult, but as yet possesses 

 nniscular iibrcs in its wall just as little as does the remainder 

 of the mid-gut. In the later stages also which were examined 

 by me I failed to trace muscle-tibres in stomach and mid-gut, 

 while in the end gut from the forty-Hfth day onwards longi- 

 tudinal muscle-tibres were distinctly recognizable. 



LII. — Natural Ilistorij Notes from H.M. Indian Marine 

 Survey Steamer ^Investigator,^ Commander R. F. Iloskgn, 

 B.N., commanding. — Series IJ., No. 1. On the Results of 

 Deep-sea Dredging during the Season 1890-91. By J. 

 Wood-Masox, Superintendent of tlie Indian Museum, and 

 Professor of Comparative Anatomy in the ^ledical College 

 of Bengal, and A. Alcock, M.B., Surgeon I.M.S., Sur- 

 geon-Naturalist to the Survey. 



[Contiuiied from p. 362.] 

 [Plate XVII.] 



Pliylum ECHINODERMA. 



Class ASTEROIDEA. 



The Asteroidea form a good collection, which we have 

 arranged under twenty-three species, sixteen genera, and eight 

 families. Of these twenty-three forms nine appear to corre- 

 spond with species described in the ' Challenger ' Report, 

 while fourteen seem to be new to science. 



Except as regards life-coloration and distribution we have 

 not been able to learn anything very new concerning the 

 Asteroidea of the deep sea. Most of them appear to live, like 

 their shallow-water relatives, upon Mollusca. In the stomachs 

 of some of our specimens the carapaces of Crustacea have been 

 found. The Porcellanasterids, so far as our rather limited 



