I9I4.] N. AnnandaIvE : Pedunculate Cirripedes. 277 



ova. The scuta are white and opaque.^ The outline of the capi- 

 tulum and peduncle is graceful and as a rule markedly sinuous ; 

 the relative proportions of the two regions differs considerably in 

 different individuals and probably the peduncle is contractile as 

 well as capable of being twisted and curved in various directions. 



The posterior outline of the capitulum is strongly arched, 

 the anterior outline markedly sinuous, strongly convex down the 

 edge of the orifice and almost straight and vertical below it. The 

 apex of the capitulum as seen from the side is slightly produced 

 but not pointed. The whole capitulum is somewhat compressed. 

 As seen from above it is distinctly emarginate in front, a median 

 notch separating its anterior border into two almost rectangular 

 lobes. The sides in this view are sinuous, but roughly parallel; 

 the posterior border broadly rounded. The margins of the orifice 

 are retroverted and a little thickened, but not fringed. The 

 orifice is patent. 



The peduncle is slender and cylindrical, a little swollen at the 

 base, a little longer than, as long as, or a little shorter than the 

 capitulum. 



The scutum is well calcified, Y-shaped but with the relative 

 lengths of the three arms variable. 



The cirri are straight and of moderate length. Those of the 

 first pair are not widely separated from the others, which they re- 

 semble in general form though they are considerably shorter than 

 the second pair ; each ramus has 8 joints, but the anterior ramus is 

 distinctly shorter than the posterior one. The two basal joints of 

 each are devoid of terminal hairs, but all the other joints bear a 

 complete circle thereof, and also a fringe descending from it for 

 some little distance down the posterior face. The second cirrus 

 has 9 joints in each ramus, a complete circle of hairs at the tip of 

 each joint and an incomplete (distal) marginal fringe in front. The 

 rami of the remaining cirri have from irtoi4 joints, some of those 

 at the base being sometimes imperfectly differentiated. The termi- 

 nal circles of hairs are sometimes interrupted on the posterior 

 cirri, but the incomplete marginal fringe is always present at any 

 rate on the last 8 to 10 joints. The sixth cirrus is slightly the 

 longest. In all the cirri the rami are much longer than the un- 

 divided basal part of the appendage. 



There are no anal appendages, but the position of each is 

 indicated by an indistinct papilla. 



There are 5 lateral filaments on each side, situated as fol- 

 lows:— two at the base of the first^ one at the base of the third, 

 one at the base of the fourth and one at the base of the fifth 

 cirrus. Each filament is a delicate tapering flattened structure, 

 quite transparent and easily overlooked though of considerable 

 relative size; the first pair are larger than the others, which 

 diminish in size from before backwards. 



i In some specimens preserved in formalin the calcareous matter has appa- 

 rently been dissolved out. 



