of the Fishery Board for Scotland. 277 



Second maxillipeds short, stout, with a strong terminal claw (fig. 14). 



The first pair of thoracic legs stout, both branches three-jointed ; the 

 first joint of the inner branch is as long as the entire outer branch, while 

 the second and third joints are very short; a long plumose seta springs 

 from near the middle of the inner margin of the first joint, but the outer 

 margin is fringed with small spines, the inner branch bears two strong, 

 but unequal, terminal claws; the first and second joints of the outer 

 branch are subequal, and are each furnished with a stout elongated spine 

 near the outer distal angle, the second joint being also provided with a 

 long plumose seta on the inner margin, the end joint is tolerably short 

 and is armed as shown in the drawing ; a stout spine also springs from 

 both the outer and inner angles of the second basal joint (fig. 15). 



The next three pairs of thoracic legs have also both branches three- 

 jointed, the inner being the shorter one ; both branches have their outer 

 margins fringed with spines. In the fourth pair (fig 16.) the inner 

 margin of the first joint of the inner branch caaries one seta. The second 

 two setae, and the end joint four setse. A short spine also springs from 

 the outer distal angle of the third joint. 



The fifth pair foliaceous, basal joint broadly triangular, with a 

 truncated and broadly but irregularly rounded apex which bears five stout 

 setae of various lengths. Secondary joint broadly subquadrangular, proximal 

 half of the outer margin nearly parallel with the inner, but the distal 

 half tapers towards the apex and carries three setae, other three setae 

 spring from the apex and lower part of the inner margin (fig. 17). 



Furcal joints very short ; the inner of the two principal tail setae with 

 the base slightly dilated (fig. 18). 



Habitat. — Collected in an old quarry, open to the sea, at Granton, 

 Firth of Forth. 



Remarks. — The form described here under the name of Dactylopusia 

 brevicornis, Claus, undoubtedly belongs to that species. The drawings, 

 though only now published, were prepared a number of years ago from 

 specimens collected in an old quarry at Granton, Firth of Forth, to which 

 the tide has access. 



The abbreviated length and massive structure of the antennules; the 

 structure of the mandibles, the stout first pair of thoracic feet, and the 

 form of the fifth pair are sufficiently characteristic of this particular species. 



The following list of some of the rare and interesting species that have 

 been obtained in the old quarry at Granton just referred to may be of 

 interest, as indicating the remarkable variety of organisms present in this 

 small body of water. The species are arranged alphabetically : — 



Acartia bijilosa, Giesb. 

 Ameira longicaudata, T. Scott. 

 Beatricella raimica, T. Scott. 

 Canthocamptus parvus, T. Scott. 

 Canuella perplexa, T. and A. Scott. 

 Oletodes similis, T. Scott. 

 Dadylopusia brevicornis, (Claus). 



,, finmarchicus, (T. Scott). 



,, vulgaris, G. O. Sars. 



Ectinosoma curticorne, Boeck. 

 Enhydrosoma incurvatum (B. & R.). 

 Euryte longicauda, Philippi. 

 Halicy clops wquoreus (Fischer). 

 Harpacticus obscurus, T. Scott. 

 Idyafurcata, Baird. 

 „ gracilis, T. Scott. 



