PANAMIC-PACIFIC PELECYPODA 475 



Explanation of Plate 2 



Figure p-age 



1-la. Nucnlana (Polltoleda) polita (Sowerby) 66 



Fig. 1, length 44.3 mm.; Fig. la, length 25 mm. Old Panama, Panama 

 PRI 25505. 



2-2a. Nncnlana (Saccella) fastlgata Keen 62 



Fig. 2, dorsal view, length 23 mm. Zorritos, Peru. PRI 25506; Fig. 2ai 

 a fossil shell, length 26.2 mm. Pliocene, Punta Blanca, Ecuador. PRI 

 25507. 



3-3a. Nuculana (Saccella) ornata (d'Orbigny) 60 



Fig. 3, length 6.2 mm.; Fig. 3a, length 6.7 mm. Manta, Ecuador PRI 

 25508. 



4-4a. Kucnlana (Saccella) ebnriiea (Sowerby) 62 



Fig. 4, length 16.9 mm. Zorritos, Peru. PRI 25509; Fig. 4a, length 

 16 mm., Santa Elena, Ecuador. P'RI 25510. 



5. NncDlana (Saccella) dranga, new species 63 



Length 11.3 mm., Esmeraldas, Ecuador. Holoytpe. ANSP 218926. 



6. Kucnlana (Saccella) impar Pilsbry and Lowe 61 



Length 10.3 mm. Sta. 2822, USFC. USNM. 



7. iPfncnlana (Saccella) acrita Dall 60 



Length 6.1 mm. Off Lower California in 21 fms. USNM 207643. 



8-8a. Nnculana (Saccella) acapiilcensls (Pilsbry and Lowe) 65 



Fig. 8, copy of figure of Pilsbry and Lowe, length 15 mm. Acapulco, 

 Mexico. ANSP 155634; Fig. 8a, dorsal view, length 11.1 mm. Palo 

 Seco, Panama Canal Zone. PRI 25511. 



9-9a. Jfucula (Nncnla) iphigenia azulensis Olsson 55 



Figured for comparison with the Recent form. Length 32 mm. Plio- 

 cene, Punta Piedra near Puerto Armuelles, Panama. PRI 25512. 



