174 PvEPOia-— 1888. 



With this revised and enlarged desci'iption of the Phyllocaridal 

 remains from Sweden are associated descriptions and figures of both 

 Scandinavian and British specimens of the masticatory organs (' teeth ') 

 of Ceratiocaris. 



We ought to have added that Mr. T. P. Barkas has given two rough 

 figures of a similar tooth, belonging probably to Dithyrocaris,^ in his 

 'Manual of Coal-measure Paleontology,' or 'Illustrated Guide to the 

 Fish, Amphibian, Reptilian, and supposed Mammalian Remains of the 

 Northumberland Carboniferous Strata,' 8vo, and ' Atlas of Carboniferous 

 Fossils from the Northumberland Carboniferous Strata,' fol., 1873. 

 'These enlarged views of a Crustacean tooth are figs. 161 and 162 in 

 pi. 5, and the specimen is described as the Anthropodontoides Bailesii, at 

 p. 45. 



§ IV. Bohemian Phylhcarida, ^"c. — M. Ottomar Novak has further 

 ■enlarged our knowledge of the Palteozoic Phyllopodous Crustaceans 

 during his critical examination of the ' Barrande Collection,' of which he 

 has the charge in the Prague Museum. 



In the Stage F-/"!, of the Hercynian Formation, he finds an un- 

 described telson, relatively short and stout, 39 mm. in length, swollen for 

 about 10 mm. from the top, afterwards neatly ridged and fluted dorsally, 

 :and bearing a row of small pits along each outer ridge. This he defines 

 as Aristozoe soUtaria, at p. 15, pi. 1, figs. 15-19, of his ' Zur Kenntniss der 

 Fauna der Etage F-/1 in der paliiozoischen Schichtengruppe Bohmens ' ; 

 ' Sitzungsber. k. bohm. Gesell. Wissensch.,' Jahrgang 1886. At p. 15 

 M. Novak explains that Aristozoe had only one caudal spine, namely, the 

 telson or style. In the Table at p. 17 he mentions two new species 

 ■of Ceratiocaris (not described, G. modesta and G. Damesi) from the same 

 Stage. 



In our Second Report (for 1884), at p. 87, we offered the remark that 

 most of Barrande's species of Gryptocaris and Zonozoe were probably 

 opercula of some Shells, or possibly of some Corals such as Ooniopliyllum. 

 M. Novak finds evidence that some at least of the Cryptocarides are 

 referable to the Conularian Orthotheca or Hyolithes, and that Gryptocaris 

 3uavis, Barrande, in particular, is the operculum of Orthotheca (Hyolithes) 

 intermedia, Noviik. ' Sitzungsb. bohm. Ges. Wiss.' 1886, pp. 7-14, pi. 1, 

 ligs. 9-13. 



We may add that in his ' Illustrations of the Fauna of the St.-John 

 Group, No. iTi.,' in the 'Transact. Roy. Soc. Canada,' Section TV., 1885, 

 Mr. G. F. Matthew has described and figured some fossil Pteropoda 

 {Hyolithes, &c.), together with their opercula (p. 48, &c., pi. 6, figs. 1, 2, 

 •5, 6, 7). These latter are evidently the same as Barrande's Gryptocaris. 

 Other probable opercula are figured and described in the same work 

 (pp. 61-66, pi. 6, figs. 16-21), under the generic names of Lepiditta, 

 Lepidilla, Hijyponicharion, and Beyrichona ; some being regarded as 

 Ostracods, and others doubtfully as Phyllopods. 



§ V. Ptychocaris (?) JascJiei. — M. Ottomar Novak has favoured us with 

 the following note : — 



' Bithyrocaris Jaschel, figured by Kayser in the " Abhandl.," &c., pi. 1, 

 fig. 13, and mentioned in the Fifth Report on the Fossil Phyllopoda of 

 the Palaeozoic Rocks, p. 66, shows some resemblance to my Ptychocaris 



' Similar to those described and figured in tlie Geoh Mag., 1865, p. 401, pi. 11, 

 tig. 8; and 1873, p. 486, pi. 16, lig. 2g. 



