204 (hi the CirripeJe Subgenus Scilltelepa?. 



pmictpo, which form a marked feature in 5'. gnx>eyi. While it 

 is apparent that S. gnveyi differs from P. (?) loiharingicns^ 

 the figures of the latter species are not good as regards detail, 

 and some mistake ap])eara to have been made in the printin<r, 

 for the figures in the plate are upside down and the lettering 

 gives the wrong names to the marijins of the valves. 



Another Liassic species — PoIUci/tes rhomhoidalig, Moore*, 

 — from the Hettangian (Sutton Stone), was said to be based 

 on a scutum and carina, although the specimen figured 

 appears to be a terguni and the description of the scutum 

 applies to it. It is not at all like the tergum in S. gav^yi^ 

 for the valve is subrhomboidal, the carinal margin l)eing 

 divided info an upper and a lower portion. The carina is 

 not described. 



TheremainingLiassic speciesis Pollicipes liasinus^Dunkovfj 

 which is founded on a valve supposed to be a tergum from 

 the Lias of Halberstadt; but it is impossible to determine 

 from the figure whether it is a Cirripede valve at all. 



EXPLANATION OF PLATE XUI. 



Strninentti}7i pulchellum, G. B. Sowerbv, Jan., sp. 

 Turoiiinn : Black Head liny, Co. Antrim, L-eland. 



Ty</. 1. riolotype oi Loricula macailami, Wvville Thomson, now in the 

 collection of the Public Ait Gallery and Museum, Belfast. 



Shell showing iho left side uppermost ; to the left-hand can 

 be seen the left portion of the carina, with the opposing right 

 portion (r) prciectiug from beneath it, the left portion of the 

 carina being followed by the left cun'nal lafut (ct), left terfjnm 

 {t'), left upper latus {ul'), and the left so?</?/»i («'), the outer 

 basal part of the right scutum (s) slightly projecting. Below 

 the carina are six of the left tubcurinal scales (cs) of the 

 prMluncle, followed by incomplete rows of the carino-latiral, 

 tipper lateral, and scutal scales of the peduncle, the gubscutal 

 scales not being present. X '2 dinm. 



This is in further illustration of my paper on "The Cirripede 

 Genus Stranwntwn (Loricula) : its History and Structure," 

 Ann. & Mag. Nat. Hist. ser. 9, vol. v. pp. G5-84, pis. iii. & iv. 



(\ihnitica (Scilhelepas) gaveyi, sp. n. Pliensbachian [pre.'-umably daini- 

 zone] : Micldeton Tuuuel, near Chipping Campden, Gloucestershire. 



Fif/s. 2, 3. Onrinal valves. X 3 diam. In. 18981, In. 18980. 



/'■/;/. 4. Subcarina. X i'^i diam. In. 189s;3. 



/'/'/. 5. Tergum (incomplete right valve). X 3 diam. In. 189^."). 



Fit/s, 6, 7. Terga (incomplete left valves). x 3 diam. In. 18987, 



In. 18988. 

 Fit/. 8. Scutum (part of valve as seen in a plaster-cast taken from the 

 natural mould after removal of the crushed shell-fragments). 



X 2 diam. In. 1898G. 



♦ Moore, C, 18(57, Quart. Journ. Geol. Soc. Loudon, vol. r.\iii. p. fi39, 

 pi. xvi. fig. 'A\ . 



t Dunker, \V., 1848, ' Palajontogrnphica,' vol. i. p. 180, pi. x.w. fig. 14. 



