\ a 
, ON THE FOSSIL PHYLLOPODA OF THE PALOZOIC ROCKS. 347 
The smaller species occurring with the last (C. Oretonensis) was de- 
seribed and figured with it in 1871. The carapace (35 x 15 mm.) is 
well figured, except that (as the author remarks, p. 106) the slightly 
concave truncation of the hinder end is not well rendered by the artist. 
Its smaller size, sharp antero-dorsal angle, and nearly even ventral curve, 
distinguish it from its associates, but scarcely separate it, as far as outline 
is concerned, from some specimens of C. inornata at Benson Knot. 
8. CERATIOCARIS SOLENOIDES, M‘Coy. 
1849. Ceratiocaris solenoides, M‘Coy. ‘ Ann. Mag. N. H.’ ser. 2, vol. iv. p. 413, with 
woodcut. 
1851. Ceratiocaris solenoides, M‘Coy. ‘ Brit. Paleoz. Foss.’ fasc. i. p. 138, pl. 1 H, 
figs. 5, 5a. 
1854. Ceratiocaris solenoides, Morris. ‘Catal. Brit. Foss,’ 2nd ed. p. 173. 
1860. Cultellus? (Ceratiosolen?) rectus, Salter. ‘Ann. Mag. N. H.’ ser. 3, vol. v. 
p. 160. 
1873. Ceratiocaris solenoides, Salter. ‘Cat. Camb. Sil. Foss.’ p. 178. 
1877. sis ij H. Woodward. ‘Catal. Brit. Foss. Crust.’ p. 71. 
Prof. M‘Coy founded the genus on this species and C. elliptica in 1849. 
The original specimens in the Cambridge Mus. (6/40, b/41) are not 
exactly drawn in M‘Coy’s figs. 5 and 5a. The carapace is elongate, sub- 
cylindrical, slightly convex on the sides, with an even elliptical anterior 
curve, and an oblique truncation posteriorly. There are faint traces of 
longitudinal striz on the hollow impressions of the valves in the matrix, 
and there is a slight trace of the ventral rim. The large one is 43 mm. 
long (fig. 5) ; the smaller specimen, fig. 5a, 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’ : 
amark consisting of two minute adventitious pits in the anterior third 
of one of the specimens, and a little hole in another, have been mistaken 
forit. Mr. Salter thought these little fossils were Molluscan ;! but they 
certainly may well claim to be Phyllopods. There are other specimens 
in the Cambridge Mus. ; also two small individuals, one 19 mm. and the 
other only 10 mm. (marked f/142) in length. In the Brit. Mus. 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, Westmoreland. 
9. CERATIOCARIS GOBIIFORMIS, sp. nov. 
A form closely approaching C. solenoides in shape, but smaller, more 
acute in front, usually more vertically truncate behind, and much more 
convex on the ventral border, accompanies C. solenoides in the Upper- 
Ludlow sandstone of Benson Knot. One of the specimens marked 6/8, 
Cambridge Mus. is 27 mm. long by 9 mm. high; one in the Brit. Mus., 
No. ‘44342,’ is 30 by 10 mm.; M. P. G. x +, (‘ Catal.’ 1878, p. 142) is 31 
by 11 mm. The valves seem to have been smooth. They distantly 
resemble in outline a deep-bodied, blunt-headed little fish, without its tail. 
It is possible that this may be a varietal or sexual form of C. solenoides, 
but it seems to be sufficiently well separated from its ally to require a 
distinctive name, so we will refer to it as C. gobiiformis in our list. 
' See ‘Ann. Mag. Nat. Hist.’ 7. ¢. p. 159, note; and Sedgwick’s ‘ Lists of Kendal 
Fossils,’ ‘ Wordsworth’s Letters on the Lakes,’ 1843-46, Appendix. 
