lliO AMPHiroDA NORMALIA. 



llie tirst joint ui' the pedunck' thicker and hmger than the other 

 two, tlie inferior distal extremity f'urni.shcd with a small shaq) 

 tooth ; flagellum roaehing nearly to the extremity of the inferior 

 antennie, secondary appendage half as long as the primary, joints 

 in each longer than hroad. Inferior antennae having the peduncle 

 nearly as long as that of the superior antcnnce ; flagellum not so 

 long as the last joint of the peduncle, joints fused together more 

 completely upon the lower margin, ciliated only upon the upper 

 margin. Gnathopoda uniform ; propodos triangular ; palm oblique, 

 nearly as long as the inferior margin, slightly convex, fringed 

 with alternate long and short bent hairs, the long ones each 

 having two lateral cilia ; inferior angle defined by a tubercle 

 surmounted by a sharp spine ; cai'pus produced to half the length 

 of the inferior margin ; meros having the inferior distal extremity 

 produced to a sharp angle. Three posterior pairs of pereiopoda 

 equal in length ; the bases scarcely dilated. Ante- and penultimate 

 pairs of pleopoda slightly spinous ; ultimate pair clean, somewhat 

 longer than the preceding. Telson emargiuate, having each ex- 

 tremity notched at the apex. 

 Length ^ths of an inch. 



Huh. Taken from a Nullipore bank off the coast in the neighboxu'- 

 hood of Glasgow. For this and several other species I am indebted 

 to my valued correspondent Mr. Eobertson of Glasgow. 



2. Phsedra antiqua. (Plate XXI. fig. 2.) B.M. 



Pliredra autiqua, Spence Bate, Quart. Jburn. Geol. Sac. p. 137. pi. 6. 



f. 8, 1858. 



C'ei^halon produced into a minute rostrum. Third segment of the 

 pleon having the posterior margin ornate, serrated and den- 

 ticulated. Superior j)air of antennae having the fii'st joint of the 

 peduncle broader and longer than the second ; thii'd joint scarcely 

 longer than the first of the flagellum ; flageUum short (?), 

 secondary appendage uniarticulate. Second pair of antcnna3 having 

 the peduncle as long as the superior antennae (?). Coxae of the 

 gnathopoda smaller than those of the two anterior pairs of pereio- 

 poda. Three posterior paii'S of pereiopoda subequal. Posterior 

 pair of pleopoda half as long again as the two preceding. Telson 

 long, lanceolate. 



Length -^ths of an inch. 



Hah. Moray Frith {Rev. G. Gordon). 



Lj/sianassa sjvnifcra (Stimpson, Mar. Invert. Grand Manan, p. 49), 

 of which the following is the description, seems to be closely related 



