24 Messrs. G. S. Brady and D. Robertson on the 
Its small size and peculiar shell-structure distinguish it 
readily from L. elliptica and tamarindus, with which alone it 
could be confounded. 
Loxoconcha fragilis, G. O. Sars. (Pl. X. fig. 3.) 
Loxoconcha fragilis, G. O. Sars, Oversigt af Norges marine Ostracoder,p.65. 
Shell of the female, seen from the side, subrhomboidal; greatest 
height situated in front of the middle, greater than half the 
ength; anterior extremity rounded, posterior produced be- 
low into a short obliquely truncated process; superior mar- 
gin moderately arched over the eyes, thence sloping back- 
wards; inferior sinuated in the middle, convex behind. 
Seen from above, compressed; greatest "width situated in 
front of the middle, and much less than the height ; pu 
nearly straight and horizontal; posterior extremity obtusely 
rounded below. Valves excessively thin and fragile, almost 
transparent, ornamented sparingly with very small tubercles 
and but slightly hai Antenne very slender; second 
joint of the superior short, much shorter than the united 
lengths of the two following, and shortly pilose on the an- 
terior margin, last three joints much elongated and nearly 
equal; third joint of inferior antenne very narrow, its an- 
terior margin smooth, without any sete. Feet very slender, 
second joint of the last pair about equal to the conjoined 
length of the two following. Copulative organs of the male 
obtusely prU in front. Eyes confluent. Length of 
female =}; i 
Hab. Moe Basin and Budle Bay. 
The few specimens of this species which have occurred to 
us consist only of se arated dose from one of which our 
figure was drawn*. Th ption given above is taken from 
G. O. Sars. 
Genus CyTHERURA, G. O. Sars. 
Cytherura propinqua, nov. sp. (Pl. X. figs. 1, 2.) 
Carapace, as seen from the side, subrhomboidal, adah 
dl 
C. similis in shape; greatest height situated in the middle, © 
and equal to about half the length ; anterior extremity well 
and evenly rounded, posterior produced. in the middle into 
an obtuse subtruncate process: superior margin evenly 
arched, inferior straight or very slightly sinuated. Seen 
from above, compressed ovate, slender and acuminate in 
front, broadly mucronate behind; greatest width behind 
* Since this was written we have found perfect examples in a Seottish 
ng. 
LEER EP AIL IIR ia os iste cago do sese Mena pe prov me cede URE o MR 
