58 FOSSIL CIRRIPEDIA. 
transverse section across the middle of the valve is given in fig. 7, d, exhibiting its peculiar 
outline. 
Carina. In Mr. Fitch’s collection there are two carine which probably belonged to 
this species, at least they do not belong to the only two other species of Pollicipes, (viz. 
P. fallax and striatus,) found by this gentleman in the chalk near Norwich. These carinz 
are identical, as I know from examination, with that (also from Norwich) figured by 
Mr. Sowerby, (Min. Conch., Pl. 606, fig. 7,) as the anterior valve of his Pollicipes 
sulcatus, Scalpellum maximum, var. sulcatum of this work. These two carine differ a 
little from each other in the basal margin, being either rectangularly pointed or rather 
blunter and more arched; their surfaces are smooth, but in one specimen there are 
some obscure longitudinal strie ; in outline they are tapering, triangular, almost straight, 
transversely flatly arched, subcarinated, edge inflected, with the lines of growth bowed 
downwards, and consequently with the basal lateral angles or sheels a little prominent. 
Finally, these carinze cannot be strictly distinguished from the same valve in P. glaber 
and wnguis, but as I believe neither of these species occur in the upper chalk near Norwich, 
they can hardly belong to them. 
Afinities. 'The scuta in this species differ from all others in the projection of the basal 
margin, close to the rostral angle; a somewhat similar projection, I may remark, sometimes 
occurs in the scuta of the recent Lepas fascicularis, A. vitrea of Lamarck. Internally, the 
valve more resembies that of the second and third varieties of Scalpellum maximum than 
any other species. ‘The terga can be distinguished from those of P. glaber only by 
the depression along the occludent margin being deeper, wider, and square-sided. 
9. Potticires reFLExus. Tab. III, fig. 8. 
POLLICIPES REFLEXUS. J. Sowerby. Min. Conch., pl. 606, fig. 8. 
P. scutis tenuibus, subovalibus ; margine basal cum margine occludente angulum recte 
longe majorem formante ; costa obsoletd rotundata ab apice ad angulum baso-lateralem decur- 
rente, valvam in duas fere equales partes separante. Carind lineari, transversé abrupte 
arcuatd ; margine basali multum producto, apice truncato. Lateribus superioribus sub- 
pentagonis. | 
Scuta ; thin, suboval, with the basal margin forming an angle much larger than a rect- 
angle with the occludent margin; a faint rounded ridge runs from the apex to the baso- 
lateral angle, dividing the valve into two nearly equal halves. Caria linear, in a trans- 
verse line steeply arched ; basal margin much produced, with its apex truncated. Upper 
Latera subpentagonal. 
Upper Marine Eocene formation ; Colville Bay, Isle of Wight. Mus. J. Sowerby, F. Edwards. 
I owe to the kindness of Mr. Sowerby an examination of some of the original speci- 
