586 THE NATUEAL HISTOET RETIEW. ' 



segments not produced into spinous appendages, as in most of its 

 congeners. The remains of a new species, provided with extraordinary 

 free cheeks, have proved that this conclusion was founded upon a part 

 only of the head and of the body of the animal, which now appears 

 to be more truly intermediate betw^een JParadoxides and Oleiius than 

 was before supposed, while at the same time it presents characters 

 opposed to those of either genus. 



Mr. Hicks gave a full description of the genus as now known, 

 and of the new species, which he called Anopolenus Salteri. !From 

 his description it appears that Anojpolenus possessed minute eyes, a 

 facial suture, and expanded pleura, but that their arrangement was 

 abnormal. 



In conclusion Mr. Salter compared the two species of Anopolenus 

 now known, stating that the one first described, without the more 

 anterior of the two segments which compose the head, was to all 

 appearance a perfect Trilobite. He also gave a figure of a new 

 species of Olenus — 0. pecten. 



3. '* On the Discovery of a New Grenus of Cirripeclla in the 

 « "Wenlock Shale of Dudley.' " By Henry Woodward, Esq., P.G.S. 

 — The attention of the author having been called to two species of 

 Cliiton described by M. de Koninck from the "Wenlock Shale, he found 

 one of them {Chiton W^^ightianus) to be a Cirripede. He stated 

 that the distinctive characters of Chiton are : (1) The valves never 

 exceed eight in number ; (2) the series is alw^ays unilinear ; (3) the 

 valves are always symmetrical, and divided into three areas. The 

 species mentioned does not, however, conform to any of these charac- 

 ters, as it had probably as many as four rows of unsymmetrical 

 plates, having no apophyses, a uniformly sculptured surface, and not 

 divided into three areas ; each series exceeded eight in number. 

 Mr. Woodward then endeavoured to show that Chiton Wrigliti- 

 anus was really a Cirripede, and formed the type of a new genus, to 

 which he gave the name Turrilepas. 



4, " On some New Species of Eurypteriday By Henry Wood- 

 ward, Esq., r.Gr.S. — In his Advanced Text-book of Geology, Mr. 

 Page figured and named the only known species (-S*. Powriei) of his 

 new genus Stylonurus, but gave no description of it. Mr. AVood- 

 ward now described this species in detail, from specimens found near 

 Pitscandly, in the Turin Hill Eange, Forfarshire ; he also gave a des- 

 cription of a new species {S. Scoticus) found in an Old Eed Sandstone 

 quany in Montroman Muir, near the Forfar and Montrose Pike. 



