froTYi the Coal-7neasures of Rochdale. 353 



soft-bodied Medusae, the ' jelly-fish ' of the Cambrian period, whilst 

 Beecher and Walcott have discovered the long-desiderated most 

 delicate branchigerous appendages of the Trilobites, and Dr. Gr. Holm 

 the complete anatomy of Eurypterus from the Baltic Silurian. The 

 soft-bodied Nereids have not only left their tracks, but their perishable 

 forms pictured on the surfaces of the older rocks and the later 

 Lithographic Stone. The indurated Chalk of the Lebanon reveals to 

 us the bodies and tentacles of octopus and cuttle-fish, which had 

 been already, but less perfectly met with in the earlier Oxfordian 

 and Lias of England. 



Of the Arthropoda of the Coal period, hundreds of new and beautiful 

 forms of winged insects, in almost perfect preservation, have been 

 figured and described by Charles Brongniart ' and other workers, 

 while numerous Crustacea have likewise been added to the 

 .marvellous fauna of this worldwide and most enchanting period of 

 Carboniferous time. 



Although many interesting forms of Arthropods from the Derbyshire 

 Coal-field,^ and from the Middle Coal-measures at Sparth, Rochdale,^ 

 and other localities,* have been already noticed in the Geological 

 Magazine, there are still several awaiting description. 



The specimen I now propose to notice was kindly sent me, some 

 long time since, by Mr. William Albert Parker, F.G.S., of Bochdale, 

 who obtained it from the Middle Coal-measures, Sparth Bottoms, 

 Bochdale. It is enclosed in a small clay-ironstone nodule, which, 

 upon being split open, exhibits the impression and counterpart of the 

 fossil. It measures 28 mm. in length and 10 mm. in depth, and 

 presents an excellent side-view of the entire animal. 



The head is short and rounded, and is produced downwards in a 

 broad recurved beak-like organ, and is followed by eleven free body- 

 segments, each supporting a pair of expanded recurved foliaceous 



^ Insectes Fossiles des Temps Primaires, etc., par Charles Brongniart, 4to, 

 Texte et Atlas, pp. 494 and 44, pis. 37, 1893. H. Woodward, " Orthopterous 

 Insect from English Coal-measures " : Geol. Mag., 1875, p. 621. " Scorpion 

 in Coal-measures " : op. cit., 1875, p. 622. " Spined Myriopods " : op. cit., 

 1887, p. 1. " Carboniferous Cockroaches " : op. cit., 1887, p. 49. " Eupho- 

 beriaferox " : op. cit., 1887, p. 116. " Etoblattina Peachii " : op. cit., 1887, 

 p. 433. " Eurtjpterus " : op. eit., 1887, p. 481; 1888, p. 418. "New 

 Cyclus " : op. cit., 1893, p. 28 ; 1894, p. 530. " Crustaceans and Myriopods, 

 Lanes " : op. cit., 1905, p. 437. " Cyclus Johnsorii " : op. cit., 1905, p. 490. 

 "Fossil Insects, Coal-measures " : op. cit., 1906, p. 25. " Eurypterus, Coal- 

 measures "": op. cit., 1907, p. 277. "Arthropods, Coal-measures " : op. cit., 

 1907, p. 539. W. Baldwin, " Myriopods from Coal-measures " : Geol. Mag., 

 1911, p. 74. 



* H. Woodward, " On Eurypterus Moysei and E. Derbiensis, Coal-measures, 

 Ilkeston, Derbyshire " : Geol. Mag., 1907, pp. 277-82, PI. XIII. " Ilkeston, 

 Derbyshire " : op. cit., 1908, pp. 385-96, with 9 text-figures. 



■' ^' Pygocephalus [Anthrapalmvion) Parkeri, Coal-measures, SpartE, near 

 Eochdale " : Geol. Mag., 1907, pp. 406-7, Fig. 2. "Arthropoda from Coal- 

 measures, Sparth " : op. cit., pp. 539-49, with 5 text-figures. " On AntJira- 

 ' palcemon (var. Holti), Coal-measures, Sparth, Eochdale": op. cit., 1911, 

 pp. 361-6, with 1 text-figure. " Coal-measure Crustaceans, Prceanaspides 

 prcBcursor, H. Woodw., Coal-measures " : op. cit., 1908, pp. 385-96. 



* "On Pygoceplialus Cooperi, Huxley, Coal-measures, Coseley, near 

 Dudley": Geol. Mag., 1907, pp. 400-7, PI. XVIII. 



DECADE V. — VOL. X.— NO. VIII. 23 



