Caprilla acunmiifera and Nytnphum coccincum. 41 



aware, been previously honoured with a portrait. Mine was 

 drawn from an individual captured among some corallines 

 that had been dredged up in Berwick Bay, a place which 

 I am in hopes of proving, by means of these Illustrations, to 

 be not less deserving of celebrity, for its productiveness in sea 

 monsters, than the shores of Devon. The " living anatomy " 

 in question attracted attention by its motions to and fro in the 

 basin, and might have easily escaped the fatal notice of him 

 who thus stamps it with immortality, had it remained at rest; 

 for, from its very slender form and colourless body, it is 

 scarcely distinguishable in that state. The motions of the 

 creature are quick and awkward, propelling itself forward by 

 alternate archings and elongations of the body, in the manner 

 of many caterpillars : but its superior rapidity is probably 

 derived from the branchial processes, that are obviously well 

 fitted for the purpose of oars, whatever other function they 

 may fulfil. 



Caprella acuminifera is about half an inch in length, very 

 slender, pellucid, and colourless, except at the joints of the 

 legs and the vesicular processes, which are spotted with red. 

 The superior antennae are as long as the body, and the last 

 articulation of these is as long as the four inferior, being com- 

 posed of a number of short joints, that are bristled with very 

 short cilia. The inferior antennas are half the length of the 

 others ; and beneath them we observe the short articulated 

 palpi. The eyes are round and scarlet; head obtuse, with a 

 spinous process above the front, and two less ones behind ; 



