208 



PROP. E. TON MAETENS ON THE SHELLS 



820. Aeca (Aisadaea) ehombea, Born, Chemnitz, Conch.-Cab. 

 vii. fig 553a ; Beeve, I. e. ii. pi. ii. fig. 12. 



Elphinstone Island. Madras, Ceylon, Salang, China Sea. 



321. Aeca (Anadaea) pilttla, Beeve, I. c. ii. pi. ii. fig. 8. 

 The height almost exceeds the length of the shell. 

 Sullivan Island, 7-10 fathoms. Java, Philippines. 



322. Aeca (Scaphaeca) in^quivalvis, Bruguttre, Chemnitz, 

 vii. fig. 552 ; Beeve, I. c. ii. pi. viii. fig. 54. 



Area hispida, Philippi, Abbild. pi. 5. fig. 2. 



The number of ribs varies from 28 to 32 ; where the perio- 

 stracum (younger state) is preserved, the interstices between the 

 ribs seem narrower than the ribs ; if the former is removed, ribs 

 and interstices are about equally broad. 



King Island, Elphinstone Island, and Sullivan Island. Salang, 

 Timor, Philippines. 



323. Cucull^a concameeata, Chemnitz, vii. figs. 526-528; 

 Beeve, I. c. xvii. pi. i. fig. 1. 



King Island, mud-banks exposed at spring-tide. Tranquebar, 

 Ceylon, Nicobars, China. 



324. Pectunculus pectinifoemis, Lam., Beeve, I. c. i. pi. iii. 

 fig. 11. 



Area pectunculus, Linne, Chemnitz, vii. figs. 568-569. 

 King Island. Zanzibar, Ceylon, Philippines. 



~NVC\JLIJ)M. 



325. Leda maueittana, Sow., Beeve, I. c. xviii. pi. vi. fig. 33. 

 Sullivan Island, 7-10 fathoms. Mauritius, Ceylon, China Sea. 



ASTAE I IDiE. 



32G. Caedita vaeieoata, Bruguilre, Chemnitz, Conch.-Cab. xi. 

 figs. 1999-2002; Beeve, I.e. i. pi. i. fig. 3. 

 Canlita calyculata, Lam., not L. 



Owen Island, coral-burrows. Bed Sea, Seychelles, Zanzibar, 

 Ceylon, Nicobars, Singapore. 



327. Crassathlla radiata, Sow., Beeve, I.e. i. pi. iii. fig. 12. 



King Island; Klpln'nstone Island, sand-flats; Sullivan Island, 

 4 and 7-10 fathoms. Singapore. 



The rayi arc very Eainl or scarcely discernible in these 

 specimens 



