56 FOSSIL CIRRIPEDIA. 



7. POLLICIPES ACUMINATUS. Tab. Ill, fig. 6. 



p. scutis elongatis, triangidaris ; margine basali cum margine occludente angidum recto 

 longe minorem formante ; interna apicis superjicie concavd. 



Scuta elongated, triangular ; basal margin forming much less than a right angle with 

 the occludent margin ; apex, with its internal surface concave. 



White Chalk. Mus. Flower, (believed to have come from the Lovyer Chalk of Stoke Ferry, Norfolk). 



My materials consist only of a single left-hand scutum, and that with the whole of the 

 basal margin broken off; nevertheless, there can be no question that it is quite distinct 

 from all the species hitherto described. 



Scutum : shell rather thin, surface extremely smooth ; triangular, much elongated, with 

 the upper part a little bent over towards the terga : slightly convex, but with the whole 

 middle part of the valve remarkably flat; the convexity being caused by the inflec- 

 tion, in a slight degree, of the occludent margin, but chiefly of the tergo-lateral portion ; 

 hence, a smooth ridge of chief curvature runs from the apex to the baso-lateral angle. 

 Occludent margin arched, forming less than a rectangle with the straight basal margin, 

 with which the very slightly concave tergo-lateral margin forms an angle rather above a right 

 angle : the tergo-lateral portion of the valve, formed by the upturned zones of growth, mode- 

 rately wide, being in the upper part about one third of the entire width of the valve : 

 rostral angle rounded. Internally {d) the valve is singular ; the depression for the adductor 

 scutorum muscle is extremely faint, and is situated unusually low down in the valve, though 

 the exact relative position must at present remain unknown, as the basal margin has been 

 broken off". But the most unusual character, at least in the cretaceous species of Pollicipes, 

 is, that the concavity of the valve runs up to the apex, and must have been lined up to that 

 point with corium : the flat internal occludent edge, marked by lines of growth, widens 

 very little in the uppermost part. 



8. Pollicipes angelini. Tab. Ill, fig. 7. 



JP. scutis elongatis, trianguUs, margine basali prope angulum rostralem in prominentiam 

 oblique rotundatam producio : interna apicis superficie prominente, margine occludente 

 sulcato. 



Scuta elongated, triangular, with the basal margin near to the rostral angle, produced 

 into an obliquely rounded point ; apex with its internal surface prominent, and with the 

 occludent edge furrowed. 



Upper Chalk, Norwich. Mus. Fitch. Kjuge, Scania. Mus. Univers. Copenhagen. 



My materials consist of four scuta which, as usual, I take as typical, a pair of terga, 

 and one or tvvo carinae which, for reasons to be given, perhaps belonged to this species ; all 



