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BRITISH PALAEOZOIC PHYLLOCARIDA. 



VII. Genus — Saccocaris, Salter, 1868. 



' Proceed. G-eol. Polytech. Soc. W. E. Yorkshire,' vol. iv, 1868, pp. 588, 589. 



In 1867 Mr. Salter noticed a relatively large oblong carapace from the Lingula 

 flags, and at first referred it to Hymenocaris, but subsequently to a new genus, 

 Saccocaris. The characters of this genus as first determined are mainly those of 

 its first-described species, which here follows. 



1. Saccocaris major, Salter. Plate XIV, fig. 6. 



Saccocaeis, Salter. Eeport Proceed. Geol. Polytech. Soc. West Biding of 



Yorkshire (for 1867), vol. iv, 1868, pp. 588, 589. 

 Hymenocabis (Saccooabis) majob, Salter. Catal. Palaeoz. Fossils Cambridge 



Museum, 1873, p. 7. 1 



— majob, Etheridge. Mem. Geol. Surv., vol. iii, 2nd edit., 1881, 



p. 366 (in list). 



— (Saccocaeis) majob, T. H. Jones and H. Woodward. Eeport Brit. 



Assoc. for 1883 (1884), pp. 219, 

 220. 



Saccocaeis majob, T. R. Jones and H. Woodward. Ibid, for 1888 (1889), 



pp. 175, 176. 



Saccocaeix (sic), Etheridge. Brit. Foss., part 1, Pal., 1888, p. 55. 

 Saccocaeis majob, Woods. Catal. Type Foss. Camb. Mus., 1891, p. 136. 



In the Woodwardian Museum at Cambridge there are three specimens labelled 

 " Hymenocaris ? major" with some doubt, and possibly by Salter himself. Only 

 one of them, however, answers to Salter's brief generic description. 



This specimen (marked t|o)j which most nearly corresponds with the original 

 description, namely, " a large ovate carapace, strongly emarginate behind, and 

 larger than H. vermicauda" is a relatively large, thin, filmy compressed valve, 

 inches long and 2 inches high (120 by 51 mm.), suboblong, with nearly 

 parallel dorsal and ventral borders, the former straighter than the latter, which 

 has a slight outward (downward) curve. Obliquely elliptical in front, the acme 



1 Here entered as " Hymenocaris (Saccocaris, ' Halifax Trans.,' 1867) major, Salter, n. s." The 

 reference is a mistake for ' Eeport Proceed. Geolog. Polytech. Soc. West Biding, Yorkshire, for 

 1867 ' (Leeds, 1868). The reference is to vol. iv, p. 588, ' On Sacocaris, a new genus of Phyllopoda 

 from the Lingula-flags,' by J. W. Salter, A.L.S., F.G.S. 



