36 Rey. T. R. R. Stebbing on Sessile-eyed Crustaceans. 
from above, has the hinder margin rounded in the middle, 
but produced to an angle on each side of the convexity, neither 
of these divisions being produced beyond the other. On each 
of the angular portions there is an upright hair. The pedun- 
cles of the last uropods are short and thick, with three little 
close-set spines distally ; they extend but a little way beyond 
the telson. Each peduncle carries a pair of equal branches 
scarcely longer than itself. 
Cyclura venosa. 
I take this opportunity of noticing that Cyclura venosa from 
Australia, described in the Linnean Society’s Journal, Zoology, 
vol. xii. p. 146, pl. vi., should be called Cycloidura venosa, 
the original name having been given in ignorance of its pre- 
vious appropriation in another domain of zoology. 
Arcturus linearis. 
This species has been figured and described in the ‘ Trans- 
actions of the Devonshire Association’ for 1874, but there 
wrongly named Arcturus gracilis, whereas it is a perfectly 
distinct new species. ‘The specific name now chosen refers to 
the close resemblance between this product of the Devonshire 
waters and the Arcturus lineatus from Algoa Bay, South 
Africa, described in this Magazine, August 1873. 
Callimerus acudigitata. 
This species was described in this Magazine ,in December 
1876, both genus and species being new. It has been suggested 
tome that the generic characters ought to be separately stated ; 
they are as follows:—Antenne subequal ; superior antennz 
without secondary appendage ; first pair of gnathopods simple ; 
second pair having the carpus infero-anteriorly produced, the 
coxe of the second pair covering those of the first. Penulti- 
mate pleopoda shorter than either of the other pairs. Telson 
simple. 
EXPLANATION OF PLATE V. 
Fig. 1. Caprella fretensis, n. sp. la. Natural size in linear measure- 
ment. 16. Side view of head. le. Pleon, seen from above. 
ld. Last segment of the pereion with the pleon, seen from 
below. le. Ventral view of the pleon, more highly magnified. 
1f. Terminal portion of upper antenna. 14g. Lower antenna. 
1A, Terminal portion, more highly magnified. 12. Maxilliped, 
seen from below. 1). First gnathopod. 14. Inner face of the 
same, more enlarged. 1/. Second gnathopod. 1m. Fifth leg. 
ln. Seventh leg. 10. Portion of palm of ditto, showing the 
