On Microzoa, &c. By C. D. Sherborn & F. Chapman. 755 



indicated by a dotted line. C. cidtrata has often been well figured, 

 especially by Vanden Broeck, Ann. Soc. Beige Micros., 1876, 

 ii. plate iii. tig. 3, and by Terrigi, Atti Accad. Pont. N. Lincei, 

 1880, anno xxxiii. pi i. fig. 12. Black clay ; rare in the brown ; 

 also at Chelsea. 



CristeUaria cultrata (Montfort), var. spiendens nov., plate XV. 

 fig. 29a, b. — More compressed than the type ; no central boss ; 

 septa limbate, ten visible, neat and symmetrical ; a large and 

 showy specimen. One example ; from the black clay. 



CristeUaria megahpolitana Reuss, plate XV. fig. 30a, b. Reuss, 

 1855, Zeitschr d. geol. Ges., Bd. vii. p. 267, plate ix. fig. 5.— In 

 1860, Bornemann figured in Z. d. geol. Ges., Bd. xii. plate vi. 

 fig. 2, Robulina magdeburgica (= Nonionina magdeburgica 

 Philippi), a form with spreading septal ribs, similar in every respect 

 to Reuss's megahpolitana. On reference to Philippi's original 

 figure (' Pahpontographica,' 1846-51, Bd. i. Tab. x a . fig. 21), we 

 find the septal ribs of his form to be regular and parallel-sided, and 

 not tapering, hence we consider that Bornemann's figure cannot be 

 accepted as the form intended by Philippi, but must be referred 

 to Reuss's figure. The classificatory value of varying external 

 ornament must be accepted as of some importance in these minor 

 divisions. We therefore prefer to use Reuss's name, which has 

 priority over Bornemann's. One specimen ; black clay. 



Sub-family PoLYMORPHiNiNiE. 

 Polymorphina d'Orbigny [1826]. 



Pohjmorphina gibba d'Orbigny, plate XVI. fig. 5. Poh/mor- 

 phina (ghbulina) gibba d'Orbigny, 1826, Ann. Sci. Nat., vii. 

 p. 266 No. 20, roodele, No. 63. — Subrotundate, septal lines 

 merely traced upon the surface. In our specimen the aperture is 

 a little on one side. Only one specimen ; black clay. 



Pohjmorphina gutta d'Orbigny, plate XVI. fig. 6. P. (Pyrula) 

 gutta d'Orbigny, 1826, Ann. Sci. Nat., vii. p. 267, No. 28, plate 

 xii. fig. 5-6, inodele, No. 30. — Amongst the forms obtained occurs 

 a shell which has been broken in half in its whole length, exposing 

 the arrangement of the interior. We have no hesitation in record- 

 ing it as above, but unfortunately can only figure it in outline. 

 Brown clay. 



Uvigerina d'Orbigny [1826J. 



Uvigerina agenda Czjzek, plate XVI. fig. 7. Czjzek, 184S, 

 Haidinger's Nat. Abh., ii. p. 146, plate xiii. fig. 14. — The prickles 

 on this form appear to be minute sharply pointed granules, very 

 closely packed together. Very abundant in both clays. 



3 d 2 



