— 377 - 



13. x\xinus abyssicola Forbes. T. minuta, laevis, 

 polita, candida, tenuis, orbicularis, convexa, umbonibus promi- 

 nentibus. — Long. et alt. 2 Mm. Forbes. 



Kellia abyssicola Furbes Rep. Aeg. luvert. p 192 uec Jeffieys. — 



(Ax) Weiukauff Mittelm. p. 172. 

 Axiuus ferrugiuosus var. fide Jeffreys Br. Goncb. II p. 253. 



Hab. Mare aegeum. — Species dubia. 



34 Axinus intermedius Monterosato Nuov. Riv, 

 p. 14. — Hab. litora Siciliae. (Sec. Jeftreys = eumyarius 

 Sars juv.). 



15. Axinus dilatatus Monterosato Nuov. Riv.p. 14. 

 Hab. litora Siciliae. 



18. Familia Ungulinidae. 



1. Genus Axinopsis Sars. 



T. rotundata, sublaevis, postice haud plicata; cardo ad 

 umbones baud interruptus, dentibus munitus piimariis plus 

 minusve distinctis, lateralibus obsoletis, cartilagine interno, sub- 

 marginali; linea pallialis integra. — Sars. 



Axinopsis orbiculata Sars. T. minuta, discoidea, 

 medio tumidiuscula, margines versus valde compressa, ambitu 

 orbiculato, antice su|)ine paululum producta, postice rotundata, 

 marginibus liberis ubique aequaliter arcuatis, dorsali antico ad 

 umbones sat impresso, dein fere horizontali, postico leviter cur- 

 vato, umbonibus prominulis, antice procumbentibus, fere medianis; 

 ligamento externo nullo ; valvulae tenues, pellucidae, albae, sub- 

 tiliter concentrice striatae, e|)idermide inconspicua, lamina car- 

 dinali isat forti, dente primario singulo obtuso, in valvula dextra 

 mediano recurvo, sat elevato, in sinistra elongato, subborizontali, 

 lateri antico propiore, cartilagine angusto lineari, marginali. — 

 Long. vix 5 Mm. Sars. 



Axiuopsis orbiculata Sars Norv p. G3 T. 19, P. II. - Friele Jalirb. 



Mal. (xes. 1879 p. 268. - Verrill Traus. Conn. V p. 561). 

 Axiuus orbicularis Friele Jau Mayeus Moll. p. 223 F, 3, uec S. 



Wood. 



Hab. oceanum arcticum, circumpolaris. 



2. Genus Ungulina Daudin. 



T. longitudinalis aut subtransversa, superne rotundata, 

 subaequilatera; valvis non hiantibus; nates decorticati; cardo 

 dentibus 2 divergentibus in valva dextra, 1 pyramidali, crasso, 

 bifido in sinistra ; ligamentum inteinum, sed extus conspicuum, 

 iossula insertum. — Desh. 



