554 H. Woodward — New British Fossil Crustacea. 



species now living in the adjacent parts of the Mediterranean, occurs 

 at Antibes at a similar height, viz. 25 feet, above the sea-level ; and 

 Mr. James Smith, in the paper before referred to, attributes the sandy 

 plain immediately to the north of Gibraltar to a period of stationary 

 level with a littoral zone exactly 24 feet above the present level of the 

 sea. The close coincidence in height is remarkable, and if these eleva- 

 tions at such distant points were contemporary, it implies a uniform 

 amount of oscillation over a very large proportion of the Mediter- 

 ranean area. The raised coast deposits at Tangier and Cadiz may 

 have been connected with an independent oscillation of greater 

 antiquity than the 25 feet rise, but yet more recent than that which 

 submerged and re-elevated Gibraltar at least 700 feet. 



The great basin appears to have been subject to repeated changes 

 of level down to the historic period, and, judging from the distribu- 

 tion of deposits of such varied character close to the coast, the 

 area subject to the oscillations must have been approximately limited 

 to the present Mediterranean boundary. 



IV. — Contributions to British Fossil Crustacea.^ 



By Henry Woodward, F.G.S., F.Z.S., etc., 

 of the British Museum. 



(PLATE XXIII.) 



IN my fourth Eeport to the British Association,^ I described, among 

 other Crustacea, two species belonging to the genus Cyclus, one 

 of which still remains unique. Since that date, I have, by the 

 kindness of Professor T. Eupert Jones, F.G.S., received a number of 

 specimens of this genus, collected by Prof. Harkness, F.E.S. : Mr. 

 Joseph Wright, of Belfast ; and Mr. J. H. Burrow, of Settle, 

 Yorkshire ; from the Carboniferous Limestone, which I now propose 

 to describe. 



1. Cyclus hilohatus, H. Woodw., sp, nov., PI. XXIII., Fig. 3, 3a. 



This specimen is from Settle, in Yorkshire, and was collected by 

 Mr. J. H. Burrow. Its greatest leng-th is three lines, its greatest 

 breadth three lines. Viewed in profile, it is nearly hemispherical 

 (see Fig. 3a), its greatest elevation being one line and a half. In 

 general form it reminds us strongly of the dorsal aspect of certain 

 Coleopterous Insects of the genus Coccinella or Cassida ; the elytra 

 being represented by the two large smooth posterior lobes of the 

 shield, with their dividing ridge, and the head and thorax by the 

 anterior third. The border is not flattened and curved outwards in 

 this species, as in C. radialis and some others, but is bent doAvnwards 

 and terminates abruptly at the same angle as the rest of the carapace 

 (see Fig. 3a). The frontal margin was probably divided into six 

 parts, but it is onty imperfectly preserved. 



The anterior part of the carapace or buckler is divided trans- 

 versely from the posterior and larger portion by, what, for conveni- 

 ence, we may call "the cervical furrow "; whilst a median, or "dorsal 



1 Continued from page 497. 



2 38th Report, Norwich Meeting, 1868, p. 72, Plate ii. 



