332 



Gastropoda. — Ctenobranchia. 



m 56. Rissoa subcrenulata S( hwtz. {li. crenulata var. niinor Phil., E. Oceam 

 Ar. et Bkx., f 11. (jraindafu Rki^i .). „Testii ovnlaris, solidula, nitens, subhyalina, 

 «Iba; spira conica, sutura leviter undulata ; anfractus (5 convexi, regulariter cres- 

 ceutes, ultimns major: erabryonales laeves, sequentes costis fortibus lirisque spi- 

 ralibus vi.\ niinoribus usque ad labruni decurrentibus reticulati, ad intersectiones 

 distincte tuberculati; apertura ovata, supra acumlnata, basi rotundata, labrum 

 arcuatum, e.xtra varice prominento denticulato incrassatum, columella arcuata, ad 

 basin incrassata" fScHWAKTZ). — Long. 3, lat. 1,75 mm. 



Habit. : Litora Cxalliae; Roussillon: Paulilles, Banyuls (BuctiroY, Dt7a:(:.. 

 Dfs.), la Cassidagne (Mariun), la Seyne (Locakd), Cannes (Dautzenbebg); litora 

 pedemontana (Jeffreys); ?Corsica (RfiyuiEx); Livorno, Castiglioncello (Appelius), 

 Pianosa (Caifassi, vai'. fa^clofa); Civitavecchia (Monterosato); Messina (Se- 

 ouenza). 



57. R. reticulata Jeffk. {Tnrbo rcficulatns Mtc^., nec 11. reticidafa Bkonn, 

 Jl. JBeaiii P. et H., Alr. Brocchii Wkff., 7i'. cimex Phil., nec L.). Testa imper- 

 forata, oblonga, solida, fere opaca, pallide luteofusca, interdum indistincte bifas- 

 ciata, fascia supera prope suturam, infera infra peripheriam sita; spira acuta. 

 Anfractus 6 — 7 convexiusculi, sensim crescentes, sutura anguste excavata discreti; 

 costulis numerosis leviter curvatis lirisque distinctioribus tiliformibus reticuhita, 

 intersectionibus interdum uodulosis; anfr. ultinius spirae ^/5 aequans, penultimo 

 vix latior. Apertura rotundato-ovata, subexpansa, labro intus striato, extra varice 

 striato munito, labio laevi, reflexo. sulculuni, sed minime perforationem relinquens 

 (ScHWAKTzj. — Long. 4 mm. 



Distrib.: AtLanticum. — Fossilis pliocenica. 



Habit: Alger (Whinkauff); litora Galliae (Petit), Roussillon: Paulilles, 

 Banyuls (Bucquoy, Dtzbg., Dfs.), litora Provinciae (Martix), Marseille: Morgillet, 

 Ratonneau, cap Cavaux, la Cassidagne, Garlaban (Mariox), Cannes (Dautzenberg); 

 Nizza (Risso); litora pedemontana (Jeffreys); Sicilia: Palermo (Philipi'i. Mox- 

 tekosato), Sciacca (Moxtkkosato). „Adventure Bank", ante „Rinaldo"s Chair'", 

 Tunis (Jeffreys); Adria: Punte Bianche (Bkusixa); mare Aegeum: inter Moream 

 et Cerigo, Milo, Xaxia, Serpho Pulo. saxum „Ananas". sin. Macri (Fobbes), Creta 

 (Spkatt, Jeffbeys). 



58. R. calathus F. et H. {Alvauia calathm Wkff\). Testa aftinis 1{. reti- 

 culatae, sed magis conica, rudius sculpta. striis longitudinalibus prominenti(tribus, 

 anfractu penultimo quam ult. angustiore, plerunique liris spiralilius I tantum, 

 rarius h — (i sculpto. Color sicut in R. reticulata. — Long. 4 mm. 



Distrib.: Mare Atlanticum, CTermanicum; ins. Canariae. — Fossilis tertiaria. 



Habit.: f) — 200 org. ; litora Hispaniae: tTibraltar, Cartagena (McAndbew); 

 ins. balear. : Mahon (McAxdbew); Alger: Rasel Amush (Jeffreys); sinus leonis 

 (H. Martix); Nizza (V^:kaxv); Spezia (Jkffreys); Creta (Spisatt, Jeffreys). 



59. R. Fischeri Jkffi!. ..Tcsta ovata, sat solida, opaca. haud nitens, 

 costis 10 -ly foitibus longitud. iu ultinio, 14 — 10 in penultimo, 10 — li-' iii 

 sequente, vestigiis earum in secundo, apice laevi, costis aeque fortibus spiralibus 

 () — 8 in ultimo, \ in penultimo, ;■! in sequente, decussantibus, intersectionibus 

 nodulosis; pallide Havida; s|)ira attenuata, anfractus ;'), modice convexi, ultimo 

 ^'2 spirae occupante, ai>ice jiroininente, contorto; sutura iirofunda, anguhita: aper- 

 tura fere rotunda, lal^ro tenui, intus laevi, hiltio in columellam retlexo; umbilicus 

 nuUus. — Long. 2,5, lat. 1,27 inm" (Jeffkkys, angl.). 



Distrib.: Mare lusitanicum. 



Habit.: 30 — 120 org. ; litora Tunetana (Xarks, Jkffhkvs). 



