308 Mr. P. II. Gosse on new or little-knoivn Marine Animals. 



could not be detaclied without considerable effort ; at length I 

 picked it off with a needle, and observed that the muzzle of the 

 Praniza was furnished with minute divergent filaments. The 

 colours during life were frecklings of umber-brown on a pellucid 

 ground, except the whole of the enormous penult segment of 

 the thorax, which was filled with a core (so to speak) of rich 

 grass-green, appearing bluish in some aspects, set in a pellucid- 

 white exterior. The eyes, which were black, were remarkable 

 for the fewness and great size of their facets ; which, notwith- 

 standing the minuteness of the insect, were distinctly visible 

 with a low-])Owered pocket-lens. 



The annual was sluggish, though apparently unhurt, when 

 detached from its victim. 



Otto obtained P. branchialis (Nov. Act. xiv. 34-8) from the 

 branchia3 of Plujcis furcatus ; and this is the only instance that 

 I know of in which this genus has been proved to be parasitic. 

 Mr. Wcstwood, however, suspected it (Ann. Sci. Nat. xxvii. 326), 

 from his having found P. Montayui among Caliyida from Shet- 

 land. 



Fam. Sph^romad/E. 



Genus N.esea (Leach). 



N. hidentata (Leach). 



When alive its ground colour is dark chocolate-brown, pro- 

 duced by a pattern of lines on a pellucid body, studded with 

 symmetrical spots and dashes of pale " king's yellow ;" the con- 

 trast of hues producing a handsome result. This species 1 have 

 obtained both at Weymouth and at Ilfracombe. 



The following Crustacea are perhaps worthy of being men- 

 tioned as occurring to me at Weymouth. Corophium longicorne 

 is numerous in the shallow salt-water ditches at the upper end 

 of the Backwater. Ant/iura gracilis occurred in sea-weed ; and 

 Nehalia hipes I found in a hollow beneath a stone off the jetty at 

 a low spring tide. 



Class ANNELIDA. 



Order Cii.^ltopoda. Fam. Nereids. 



Genus Crithida (mihi). 



Anteinuc five, vei-y large, viz. a frontal pair which are bulbous 

 at base, and two-branched, and three occipital ones, which are 

 very thick, tap(;ring to a blunt point, and long : a pair of ten- 

 tacular cirri on the head i two large eyes : feet ovate, very move- 



