52 BRITISH PALAEOZOIC PHYLLOCARIDA. 



21. Ceratiooaris solenoides, M'Coij, 1849. PL VIII, figs. 4 a, 4 b, 5, 7 a, 7 6, 



8 a, 8 6, 9 a, 9 6, 10 a, 10 6. 



1849. Ceratiocaris solenoides, M'Coy. Ann. Mag. Nat. Hist., ser. 2, vol. iv, 



p. 413, with woodcut. 



1851. — — — Brit. Palaeoz. Foss., fasc. i, p. 138, 



pi. 1 E, figs. 5, 5 a. 



1854. — — Morris. Catal. Brit. Foss., 2nd edit., p. 173. 



1860. Cultellus ? (Ceratiosolen ?) rectus, Salter. Ann. Mag. Nat. Hist., 



ser. 3, vol. v, p. 160. 



1865. Ceratiocaris solenoides, Huxley & Etheridge. Catal. Foss. M. P. 6., 



p. 79. 



1873. — Salter. Catal. Camb. and Sil. Foss., p. 178. 



1877. — H. Woodward. Catal. Brit. Foss. Crust., p. 71. 



1878. — JS.N.&U. Catal. Foss. M. P. G., p. 142. 



1885. — T. R. J. Sf R. W. Third Eeport Pal. Phyll., 



p. 347 ; Geol. Mag., 1885, 

 p. 461. 



1886. — — — Fourth Eeport, p. 232 ; 



Geol. Mag., 1886, p. 459. 



Prof. M'Coy founded the genus on this species and Emmelezoe elliptica in 1849 ; 

 but the original specimens in the Cambridge Museum (6/40, 6/41) are not drawn with 

 sufficient exactness in M'Coy's figs. 5 and 5 a. The carapace is elongate, sub- 

 cylindrical, slightly convex on the sides, with an even elliptical anterior curve, and 

 an oblique, slightly curved truncation posteriorly. There are faint traces of 

 longitudinal stria? on the hollow impressions of the valves in the matrix, and there 

 is a slight impression of the ventral rim. The large valve is 43 mm. long 

 (M'Coy's fig. 5) ; the smaller specimen (fig. 5 a) 27 mm., is apparently broken 

 behind, but does not show the double valve there as given in the figure. We 

 cannot distinguish any "nuchal furrow," nor is there any "eye-spot;" a mark 

 consisting of two minute adventitious pits in the anterior third of one of the 

 specimens, and a little hole in another, have been mistaken for it. Mr. Salter in 

 1860 thought that these little fossils were Molluscan ;* but they certainly may well 

 claim to be Phyllopods, as he afterwards recognised them to be. There are other 

 specimens in the Cambridge Museum. In the British Museum there are four 

 rather large, but not well-preserved, specimens (44342). All the above come from 

 the Upper-Ludlow grey micaceous sandstone of Benson Knot, near Kendal, West- 

 moreland. 



1 See 'Ann. Mag. Nat. Hist., 1. c, p. 159, note; and Sedgwick's 'Lists of Kendal Fossils,' 

 Wordsworth's Letters on the Lakes,' 1843 — 46, Appendix. 



