234 CRUSTACEANS. 



situated on the centre of the head^ is a small dark eye. The tail, con- 

 sisting of several articulations, terminates in a fork of two pencils. 



This animal moves swiftly by jerks through the water. 



One specimen has occurred, whose colour, when dead, was con- 

 verted to white. 



Plate LXII. 



Fig. 14. Cyclops punctatus. 



E. — Cyclops fasclatus. — Belted Cyclops. — Plate LXX. fig. 9. 



I speak with some hesitation of this creature, which in form is some- 

 what oniscoidal. It is about a line in length, and rather of flattened 

 figure ; springs through the water, and is orange to the eye. Towards 

 the posterior extremity it is distinctly begirt by three belts. 



It was very common a number of years ago, but I have not seen it 

 of late. 



Plate LXX. 



Fig. 9. Cyclops fasciatus. 



§ 7. Ntmphon gracilis — Plate LXIV. figs. 1, 2, 3, 4, 5, 6. 



The resemblance of some animals, such as the Hyas araiiens, and 

 Cancer phalangium, to the spider, is perhaps much less impressive than 

 that of the Nymphon, whence certain naturalists have explicitly distin- 

 guished it as the Spider Crab. Undoubtedly this must be considered a 

 very singular looking creature, of a strangely disproportioued form in 

 the reciprocal dimensions of its organs, and still more extraordinary in 

 the attitudes assumed, so unUke those of all other animals familiar to us. 

 A slender body, not half an inch long, nor half a line thick, with an or- 

 gan resembling fangs or forceps in front, is sustained on four pair of long, 

 feeble, slender limbs, expanding above two inches and a half between 

 their opposite extremities. On the upper surface are four eyes. Colour 

 universally dingy yellow, sometimes almost white. — Plate LXIV. fig. 1. 



