Geological magazine . later forms the avicularia tend to broaden and flatten out andthe infold of the side walls and the apertural denticle become veryfaint or disappear. EXPLANATION OF XIV. (All figures x 12 cliams. unless otherwise stated.)Fig. 1. Semieschara Proteus, var. lateaperta. Zone of H. plcmns, Froxfield,Hants. ,, 2. Semieschara Proteus. Zone oi M. cor-test2idi7iarium, ,,3. ,, ,, ,, Privett, Hants. .,4. ,, ,, ,, Seaford. ., 5. ,, ,, ,, ,, X 21. ,,6,7. ,, ,, M. cor-anguinum, Gra,\esend. ,, 8. Semieschara Proteus, vax. peneclausa. Zone of A. qiiadratus (sub-zone
Geological magazine . later forms the avicularia tend to broaden and flatten out andthe infold of the side walls and the apertural denticle become veryfaint or disappear. EXPLANATION OF XIV. (All figures x 12 cliams. unless otherwise stated.)Fig. 1. Semieschara Proteus, var. lateaperta. Zone of H. plcmns, Froxfield,Hants. ,, 2. Semieschara Proteus. Zone oi M. cor-test2idi7iarium, ,,3. ,, ,, ,, Privett, Hants. .,4. ,, ,, ,, Seaford. ., 5. ,, ,, ,, ,, X 21. ,,6,7. ,, ,, M. cor-anguinum, Gra,\esend. ,, 8. Semieschara Proteus, vax. peneclausa. Zone of A. qiiadratus (sub-zone of ditto), Shawford, Hants. Plate XV. (All figures x 12 diams.)Fig. 1. SemieschnraWoodsi. Zone of B. witcronato, Portsdown (type-specimen).., 2, 3. ,, 4. ,, Subzone of 0. j;iZ!i/a, West Meon, Hants. ,, 5. ,, ,, A. quadratus, Shawford, Hants. ,, 6. Semieschara Pergensi. (cro7iato,Portsdown(type-specimen).,, 7,8.,, 9-11. ,, Subzone of £. sc?</a/?(s, var. dfjJiTSSMS, Brighton. Geol. 1912. Plate M. .U. Brijdvne, Plioto. Benirose, Colin. Chalk Polyzoa. H. L. Haivhins—A New Fihilaria from Nigeria. 297 III.—A New Species or Fibularia euom Nigeria. By Herbert L. Hawkins, M. Sc, , Lecturer in Geology, UniversityCollege, Beading. (PLATE XVI.) AMONG a series of fossils collected in Southern Nigeria by Mr. A. , and submitted by him to the autliorities at the BritishMuseum, are some small Echinoids. Dr. Bather has kindly allowedme to examine them, and, as they appear to belong to a new species,I have drawn up the following description. Eor reasons stated belowI ascribe the forms to the genus Fibularia, Lamk., and consider all thespecimens to belong to the same species. Ten individuals have beenused for the purposes of the description, but, to prevent possibleconfusion, I select that numbered A as the type-specimen. All the examples are preserved in a pale-yellow, calcareous sandstoneof fine grain. Unfortunately the sand grains have often been pr
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1864
