32 Messrs. Jones and Kirkby on Carboniferous Entomostraca. 



gard to this deposit, and which indeed induces me to make this 

 communication, is the occurrence in it of water-worn remains of 

 Iguanodon. Of this reptile I have obtained one of the phalanges, 

 a worn tooth, vertebrae, and one or two other fragments. The 

 presence of these rolled fossils so far beyond the present area of 

 the Wealden, coupled with the occurrence of numerous fragments 

 of fossil wood strongly resembling that found in the Purbeck 

 beds, seems to prove that, previously to the formation of this 

 deposit, an extensive denudation of Wealden strata must have 

 taken place in this district. 



IX. — Notes on the Palceozoic Bivalved Entomostraca. No. VII. 

 Some Carboniferous Species. By T. Rupert Jones, F.G.S., 

 and James W. Kirkby, Esq. 



With the view of working out the characters and classification 

 of the Bivalved Entomostraca of the Carboniferous Rocks, we 

 have had to determine the specific value of the forms already 

 published by palaeontologists. In the 'Annals and Mag. Nat. 

 Hist.^ for May 1865 (ser. 3. vol. xv. p. 404, &c.) we gave the 

 results of our examination of some Bavarian specimens (with 

 which Dr. C. W. Giimbel obligingly favoured us), whereby we 

 were enabled to determine Count Miinster's eight Carboniferous 

 species — the oldest on our list, having been published in 'Leon- 

 hard's Jahrbuch' for 1830. 



1793. Ure. — Before proceeding to discuss the species pub- 

 lished subsequently to 1830, we have to notice some figured but 

 unnamed forms, well known to the students of Scottish geology, 

 who have to refer to Ure's * History of Rutherglen and East 

 Kilbride^ (8vo, 1793). In this work the Rev. David Ure no- 

 ticed the existence of certain "microscopic bivalved shells" 

 (Entomostraca) in the Carboniferous Limestones near Glasgow, 

 and supplied his friends with suites of these little fossils, toge- 

 ther with minute Gasteropods; and tastily mounted sets, in 

 glazed frames, are still preserved in the Hunterian Museum in 

 the Royal College of Surgeons, London, and in the Museum of 

 the Andersonian University, Glasgow. (See the very interesting 

 * Biographical Notice of the Rev. David Ure,^ &c., by John Gray, 

 8vo, Glasgow, 1865.) " Both John Hunter and Dr. Anderson 

 were friends of Ure j and as these microscopic fossils were found 

 in Hunter's native parish, they would be the more prized on 

 that account.'' (Mr. John Young, Letter.) 



Four or five of the little Entomostraca were figured and de- 

 scribed by Ure in his * History of Rutherglen,' &c. One of 

 them (pi. 14. fig. 15), a subreniform Cy there (?), small, white. 



