186 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



Cat. No. 250984, one valve (Cat. No. 1501); Cat. No. 250985, one 

 valve (Coll. No. 1502); Cat. No. 250986, four valves (Coll. No. 1503); 

 Cat. No. 250987, two valves (Coll. No. 1504); Cat. No. 250989, 

 three very young valves (Coll. No. 1506) ; Cat. No. 250990, one valve 

 (Coll. No. 1507); Cat. No. 250992, one valve (Coll. No. 1509). 



Family PECTINIDAE. 

 Genus PECTEN Muller 



PECTEN NATALENSIS Smith. 



Cat. No. 17429, U.S.N.M., nine valves from South Africa. Cat. 

 No. 43171, U.S.N.M., seven valves from Cape of Good Hope. Cat. 

 No. 186913, U.S.N.M., one specimen from Port Alfred (Coll. No. 

 283). Cat. No. 249852, U.S.N.M., three valves from the same place 

 (Coll. No. 1124). 



PECTEN SULCICOSTATUS Sowerby. 



Cat. No. 228, U.S.N.M., a fragment collected by William Stimpson 

 on the North Pacific Exploring Expedition at the Cape of Good Hope. 

 Cat. No. 187151, U.S.N.M., two valves from Port Alfred (Coll. No. 

 698). Cat. No. 249851, U.S.N.M., two additional valves from the 

 same place (Coll. No. 1123). 



Family SPONDYLIDAE. 

 Genus PLICATULA Lamarck. 



PLICATULA SQUAMOSISSIMA Smith. 



Cat. No. 251009, U.S.N.M., contains a specimen of this species 

 from Port Alfred (Coll. No. 1526). 



Family LLMIDAE. 

 Genus LIMA (Bruguiere) Cuvier. 



LIMA PERFECTA Smith. 



Cat. No. 186912, U.S.N.M., one specimen from Port Alfred (Coll. 

 No. 282). 



LIMA ROTUNDATA Sowerby. 



Cat. No. 17802, U.S.N.M., two valves from the Cape of Good Hope. 

 Cat. No. 186911, U.S.N.M., one specimen from Port Alfred (Coll. 

 No. 281). Cat. No. 250995, U.S.N.M., one valve from the same 

 locality (Coll. No. 1512). Cat. No. 251004, U.S.N.M., two very 

 young valves from the same place (Coll. No. 1521). 



