— 457 - 



Z. S. 1878 p. 411. - Hidalgo Esp. T. 14. R 4-6. - Locard 

 Cat. p. 526. 

 Terebratiila irreg-ularis de Blainville Dict. vol. 53 p. 140. 

 Var. = Terebratula moustruosa Scacchi t at. p 8. 



Hab. mare niediterraneum et lusitanicum. 



8. Genus Thecidium Sowerby. 



T. adnata, solida, irregularis , valde inaequivalvis , valv. 

 infera majore atfixa, supera operculiformi ; skeleton complicatum. 



Thecidium mediterraneum Risso. T. minuta, valde 

 gibbosa, adnata, suborbicularis, laevis, praeter strias incrementi 

 laevis, extus tlavescens, intus candidissima ; in valva minore in 

 latere utroque elevatio semicircularis cariniformis, extus et intus 

 declivis, sulcis transversis fortibus exarata; in majore margo 

 intus declivis, pariter sulcatus, in regione cardinis lamina libera 

 conjunctus, medio processus e fronte oriundus primum angusta- 

 tus, deinde dilatatus, acumine triplice versus cardinem directo ; 

 inter eum et vallum marginalem lamina altera lateribus adnata 

 in regione cardinis libera observanda. — Diam. 4 Mm. 



Tliecidea mediterranea Kisso Europe merid. IV p. 394 F. 183. — 



Sow. Geu. F 6. 7. - Desli Lam. VII p. 347. — Philippi 



Enum I p 99 T. 6, F. 17 - Sow. Thes. I p. 371 T. 73. 



F. 30-32. - Cheuu Man. II F. 1087-1089. - Keeve Couch.ic. 



sp. 48. Weinkauif Mittelm. p. 291. - Pr. Z. S. 1878 p. 412. 

 Thecidea spoudyloidea Scacchi Cat. p. 8 F. 7-10. 



Hab. mare mediterraneura. 



2. Familia Rhynchonellidae» 



1. Genus Rhynchonella Fischer. 



T, fibrosa, inaequivalvis, valva ventrali majore, rostro 

 acuto curvato imperforato munita, dorsali minore; foramen in 

 parte infera rostri situm, angustum, limbo prominente ; skeleton 

 internum valvulae dorsalis ex apophyribus 2 discretis, brevibus, 

 subparallelis compositum. 



1. Rhynchonella psittacea Chemnitz. T. obscure 

 fuscata vel atroviolacea, sat convexa, forma subtriangulari, antice 

 late truncata, postice attenuata, rostro longo prominente et 

 hamuli instar curvato apice acuto, foramine triangulari, incom- 

 pleto; valvulae tenues obscure radiatim striatae, lineis concen- 

 tricis irregularibus, ventrali majore antice medio leviter im- 

 pressa, margine frontali rotundato-producto, dentibus cardinali- 

 bus magnis triangularibus. — Long 24 Mm. Sars. 



Auomia rostrum psittaci Chemnitz Conch. Cab. VIII p. 106 T. 78, 



F. 4. 

 Anomia psittacea Gmelin ed. 13 p. 3348. — (Ter.) Lam. VII 



