— 191 — 



Ligamento marginis, pilis brevissimis ohsito. — Long. 0,043; 

 Lat. 0,016. 



Hdb. Bornéo ; Luçon (D''^ Montano et Rey). — Rare, 

 Mus. Paris. 



2. SCHIZOCHITON POLYOPHTALMUS, Rochbr. 



s. — Testa elongata, solidissima, carinata, albida, maculis 

 pallide luteo ruffis sparsa ; valva antica, 6 radiata, inter- 

 vallum sulcorum, lineis angulatis sculptum; valvis interme- 

 diis, umbonatis^ umbone obtuso, incrassato ; aries lateralibus 

 4 costatis, Costa latissima, squamosa, squamis tumidis, nigro 

 oculatis, formata ; areis centralibus longitudinaliter costis 

 undatis, fodiatis; valva postica fissurata. 



Ligamento marginis subangusto, fuliginoso, setis albidis 

 obsito, postice rimato. 



Hab. Philippines, ~ Rare. Mus. Paris. 



3. CHiETOPLEURA THOUARSIANA, Rochbr. 



C. — Testa ovato oblonga, compressa, carinata, subrufa, 

 maculis viridescentibus passim tecta, valva antica 10 radiata, 

 granulosa, granulis concentrice dispositis, margine lato lim- 

 hata ; postica minima, umbonata ; valvarum intermediarum 

 area mediana longitudinaliter suleata, sulcis angulose dispo- 

 sitis ; areis lateralibus, favis impressis, lateraliter graniferis. 



Ligamento marginis fusco, setis rufis sparso. — Long. 0,032; 

 Lat. 0,014. 



Hab. Kamtchatka. (Du Petit-Thouars) — Rare. Mus. 

 Paris. 



ESPÈCES AFRICAINES. 



4. ACANTHOGHITES HAMATUS, Rocllbr. 



A . — Testa elongata, ovata, rosea, intense carinata, carina 

 prealta, linearis, rugulosa, postice acuta ; valva antica rotun- 



