163 



Patria: Gabon in Guinea, comm. cl. Largilliert. 

 Obs. P. echinulata Krnnss. tertiam varietatem sistit. 



31. Patella orichalcea Ph. 



P. (es(a-ovato elliptica, depresso-conoidea , satis te- 

 nui, pellucida, pallide Cornea; costis circa 20 radianlibus 

 angiistis, rufo-fuscis, parum prominulis; strigis rufo-fuscis 

 in interstitia nonnunquain decurrentibus; pagina interna 

 puleherrime argenteo-aurea, centro pallide fiisca; vertice 

 ad V4 — Vs longitudinis sito: margine costis excurrentibus 

 subdentalo. Long. 18'"; latif. 14'"; alt. ö'/a'". 



Patria : Nova Zeelandia , comm. cl. Largilliert. 



32. Petricola costata Ph. 



P. testa elongata, subcylindrica, utrinque rotundata, 

 posticc hiante, alba, longitudinaliter costata, costis anticis 

 et medianis subobsoletis, posticis elevatis, interstitia non 

 aequantibus; apicibiis involutis ad Ve longitudinis sitis; 

 dentibus duobus valvae dextrae cardinalibus elongatis, 

 uncinatis. Long. IOV2'"; •'ib. b^/J"; crass. 5'". 



Patria . . . 



DilTert a P. dactylo Sow. costis anticis obsoletis, 

 posticis vero prominentibus. 



33. Pei7i€ola robusta Ph. 



P. testa subglobosa, solida, alba, versus apicesfusca; 

 lineis elevatis radianlibus postice distantibus, squamis for- 

 nicatis confertis obsitis; liganiento triangulari, subinterno; 

 dente cardinali antico valido porrecto in valva dextra, 

 duobus minoribus, anteriore bifido in sinistra; pagina in- 

 terna fusca. Long. 7'"; alt. ö'/»; crass. S'/j. 



In Avicula margaritifera e Panama a fralre allata 

 inveni. 



11* 



