76 FOSSIL CIRRIPEDIA. 



narrower, and a central portion of the inner occludcnt margin (marked with lines of growth) 

 here forms a slightly prominent ridge. In one of the three specimens, the baso-lateral 

 portion of the valve was considerably more produced than in the other two. Terga 

 (fig. 8, h), rather broad, considerably convex ; apex pointed, and much curled towards the 

 scuta ; upper carinal margin unusually arched, slightly longer than the lower carinal margin ; 

 there is a deep depression parallel to the occludent margin, which is itself rounded, protube- 

 rant, and considerably shorter than the scutal margin. A curved ridge, projecting up above 

 the general surface of the valve, with sloping sides, runs from the apex to the basal angle, 

 which latter is broad and rounded ; the ridge runs down nearly the middle of the valve. 

 Dimensions. Length of longest scutum "65 of an inch.^ 



1 20. POLLICIPES ELEGANS. Tab. IV, fig. 9. 



p. valvis longitudinaliter et transverse striatis : scutorum margine basali recto, cum margine occludente 

 angulum recto paulo majorem formante ; casta parietali, latiore quam pro solitd incrementorum latitudine, 

 ah apice ad angulum haso-lateralem decurrente : tergorum casta parietali, recta, ad apicem Lasalem, acumi- 

 natum decurrenfe. 



Valves longitudinally and transversely striated. Scuta with the basal margin straight, forming an angle 

 rather above a rectangle with the occludent margin ; a wall-sided ridge, which is broader than the average 

 width of the zones of growth, runs from the apex to the baso-lateral angle. Terga with a straight, wall- 

 sided ridge running to the pointed basal angle. 



Maestiicht Formation, Faxoe, Denmark. Ignaberga, Scania. 



I am indebted to Professor Steenstrup for an examination of three scuta, a tergum and two carinse, 

 firmly embedded in the fragmentary coral-rock of Faxoe, and of two very fine scuta from Scania, collected 

 by M. Angelin. The valves have each zone of growth raised into a ridge like the roof of a house ; the 

 interspaces between these ridges are marked by longitudinal strife. Length of largest scutum 1"1 of an inch. 



Scuta (fig. 9, c), with the apex acuminated, much curved towards the terga ; occludent margin either slightly 

 or much arched ; forming an angle rather above a right angle with the straigiit basal margin ; tergo-lateral 

 margin slightly (but to a variable degree) hollowed out in upper part, and nearly straight in the lower part, 

 where it forms nearly a right angle with the basal margin. Baso-lateral angle generally very broad, 

 rounded, almost obliquely truncated. From the apex to this angle a gently curved, broad, wall-sided ridge 

 runs, which very perceptibly widens in its downward course ; it is genei-ally wider than the average width of 

 each zone of growth. Internally the occludent margin is very wide, flat, and marked with ridges; the pit 

 for the adductor muscle is deep. 



Terga (fig. 9, d) broad, rhomboidal, slightly convex ; basal angle apparently (for specimen is broken) 

 blunt, and obliquely truncated ; upper carinal and occludent margins nearly straight ; shorter than lower 

 carinal and scutal margins ; valve considerably depressed in a line parallel with the occludent margin, close 

 to which the margin itself is convex and arched. The wall-sided ridge which runs from the apex to the 

 basal angle is straight, (not quite correctly represented at d), and widens considerably in its downward 

 course : it is not so wide proportionally to the whole valve as the ridge on the scuta, for it is here only a 

 little above half as wide as the average width of each zone of growth ; it runs at above one third of the width 

 of the entire valve from the carinal margin : the plaits cross its summit in a course not exactly corresponding 

 with those on the valve on each side of it ; probably this ridge projected and formed, as in P. rigidus, the 

 basal point of the valve. 



Carina (fig. 9, a, b) imperfect, elongated, that is, tapering gradually downwards from the apex ; some- 



