~- 185 



niles) DESH. V. dextra rarissime Jibera, plerumque Cyprinae 

 1. Oculinae adnata. Sinus non nisi deformitale clausus, profun- 

 dus, angusfus, margine pectinatus. Boh. Bergen. 



232. P. septemradiatus MUELL., (Ostrea) GM., == P. triradiatus 

 MUKLL. = P. danicus CIIKMN., Sow., = P. pscudamusium CIIEMN. 

 (sub 0. hybrida GM. subsumla\ = P. adspersus LAMK., DESH. = 

 P. nebulosus BROWN. Slriac jam tenuissimoe, jam notabiles; 

 plicae 5 10, saepius 78, rotundatae J. acutae; sinus parum 

 profundus, vix acutus. Kullen Bergen. 



233. P. ti grin us MUKLL., DESH. = P. parvus D.vG. = P. obsoletus 

 PENN., ANGL. = CIIEMN. XI f. 2031 2036. T. convexa, al- 

 tior quam longa, soliduJa; plicae 3, 5 obsolete, costellae nume- 

 rosae, supra medium rarissime distinguendae; sculptura e striis 

 subtilissimis arcuatim divergentibus, undulatis, gyrosis; auriculae 

 posteriores anticis dimidio brevicres; margo cardinalis dimid. t. 

 longitud. vix aequans; 7 2 8 9 (T , ^jf, -|f;|- mm. Boh. Finm. 



234. P. furtivus n., an = 0. Jaevis MONT., MAT. et RACK.? (non 

 PENN.) T. parurn convexa, tenuis, ceque alta ac longa; plicae 

 nullae, costeliae nullae nisi ad latera, ubi inf.erdum 5,6 lineares, 

 squamosae; sculptura qualis in priore subtilissima e striis sub- 

 dichotomis, flexuosis, moniliformibus; auricula posterior dimidia 

 antica nonnihil longior; margo cardinalis dimidiam longiludincm 

 testae superans; pictura mire variabilis; -}-|, T V.Tr> ^firS ir!* min - 



Species pro juniore praeced. male habita, tenuior, rotundatior. 

 Juniores in hoc genere adultis elongatiores. Boh. -- Bergen. 



235. P. striatus MUELL. = 0. fuci GM., =0. vitrea ft GM., CHEMN. 

 VII, f. 637 b, c, = P. aculeatus JEFFU., Sow., = P. rimulosus 

 PHIL. T. inaequivalvis; auricula posterior anlica dimidia vix 

 brevier; radii circ. 70 squamis muricati minutis fornicatis; 

 ^y mm. Kullen - - Finm. 



236. P. vitreus (Pallium) CIIEMN. (Ostrea) GM., (non Risso, non Sow.) 



T. tenuissima, alba, orbicularis, tumidula, subaequilatera, po- 

 stice plenior, rimulis linearibus mterruptis subtilissime radiatim 

 caelata, striis concentricis ornata capillaceis, crebre squamiferis, 

 squamis minutis, fornicatis, inferne resectis; marg. card. == f, 

 ^ long, t.; auriculae posticac angustae, obtusangulae, a disco le- 

 vius distinctae, = T 1. T anteriorum, quarum sinistra subreclan- 

 gula; sinus profundus acutus. Var. laevigata, squamis ad latora 

 solum obviis; T ^;.J mm. Boh. Finm. 



***) Sinus distinctus, margine muticus. 



237. P. imbrifer n. T. tenuissima, fragilis, alba, inaequivalvis, 

 v. sin. majore, aeque alia ac longa, subaequilatera, antice levius 

 producta, parum convexa, striis notata concentricis, imbricatis, 

 crebris, in v. d. simplicibus, in v. s. squamatis, squamis per 

 radios circ. 28 inaequales dispositis, vesicularibus, oblongis, spi- 

 nulis niuricalis, versus margin em sensim auctis; margo cardin. 



