88 



PLANORBULINA bOkb. 



P. lobatula Walk. & Jacob. 



Tab. XV, fig. 774. 



Saspissirae affixa, piano- aut concavo-convexa, sajpe sinuose undata; facies aboralis 

 s. spiralis anfractum soluin ultimum plerumque exhibens, interdum obsolete umbilicata, 

 segraentis 6 — 8; facies oralis anfractus 2 — 3 praebens; apevtura rima suturalis, luai-ginalis- 

 extraumbilicalis. 



Pori saepe exigui, sparsi, interdum pr£ecipue faciei oralis obsoleti. 



Variat: magis corapacta, segmentis anfractus ultimi usque ad 12. 



Fig. 774: facies aboralis; a: facies marginalis; h: facies oralis, typicas. 



Nautilus lobatulus Walk. & Jac, 1798, Adams Essay microscop. (Kanmacher), p. 642, t. 14, f. 36. 

 Truncatulina tubereulata I)'Orb., 1826; Tabl. méth., Ann. Se. nat. 7, p. 279, No. 1, Mod. 37. 

 Planulina ineerta d'Orb., ibid., p. 280, No. 1. 

 Truncat. variatailis Reuss, 1870; v. Schlicht, For. Septar. Thon. Pietzpulil, t. 21, ff. 12 — 23, 27 — 29. 



» lobatula Bkady, 1884, Chall. Rep. 9, p. 660, t. 92, f. 10; t. 93, flf. 1, 4—5; t. 115, ff. 4—5. 



» » Bbady, Park., Jones, 1887, Abrohlos Bank, Transact. Zool. Soc. London 12, 7, t. 45, f. 26. 



» » Sherborn & Chapm., 1886, London Clay; Jourii. R. micr. Soc. (2) 6, t. IG, f. 12. 



Synonyniiara ceteram vide GoÉs, Ret. Rhizop. Caribb. Sea, Sv. Vet. Akad. Handl. 19, 4, p. 96. 



Obs. Nantilus farotus Ficht. & Moll., 1803, Test. microsc, p. 64, t. 9, ff. g — i est forsan fonna distincta, 

 poris raajoribus. 



Anomalina irregularis Terqu., 1886. For. & Ostrao. Islande, Bullet. Soc. Zool. France 1886, p. 333, t. 11, 



ff. 14—15. 

 ? Truncat. globulosa Terqu., ibid., t. 11, ff. 12—13. 

 Truncat. lobatula Fobnasini, 1893, For. marne messinesi, Mem. Accad. Se. Instit. Bologna (5) 3, t. 2, 



ff. 15—16. 



Hab. ad öras Svecise occidentales et Norvegite in algis lapidibnsque adnata, profund. metr. 5 — 50 sat frequens; 

 raare Groenlandicura profund. metr. 100 — 300. Diam. mm. l.,30 et ultra. 



formae affines: 



1. cameris plus minusve irregulariter dispositis. 



P. variabilis dOrb. 



Truneatul. variabilis d'Orb., 1826, Tabl. méth., Ann. Se. nat. 7, p. 279; P1839, For. Canar. p. 135, 



t. 1, f. 29. 

 Planorb. truncata Egger, 1857, Mioc. Ortenburg; Leonh. u. Bronns Jlib. 1857, p. 280, t. 10, 



ff. 15—17. 

 Truncat. tuberosa Park., Jones, Brady, 1871, Noraenclature Foram., A. M. N. Hist. (4) 8, p. 177, 



t. 12, f. 138. 

 » innormalis Costa, 1854, Pal. Nap. 2, t. 21, f. 11. 



» variabilis Brady, 1884, Chall. Rep. 9, p. 661, t. 93, ff. 6, 7. 



» » Brady, Park., Jones, 1887, Abrohlos Bank, Transact. Zool. Soc. London 12, 7, 



t. 45, f. 17. 



Hab. c. prneoedente rara prresertim in tropicis. 



