196 



PROF. E. VON MARTENS ON THE SHELLS 



232. Trochtts niloticus, L., Chemnitz, Conch.-Cab. v. figs. 

 1605 & 1614 ; Kiener, pi. 10 ; Quoy Gaimard, Voy. ''Astrolabe] 

 pi. 62. fig. 12. (Not Reeve, I. c. xiii. pi. i. fig. 3 a, which repre- 

 sents T. maximus, Koch. See Ann. & Mag. Nat. Hist. (3) xx. 

 1867, p. 97. 



Largest specimen 110 millim. high, 126 millim. broad at the 

 base. 



Elphinstone Island Bay and Sullivan Island. Ceylon, Nicobars, 

 Singapore, Celebes, New Ireland. 



233. Trochus (Obeliscus) pyramis, Born. 



Trochus obeliscus, Gmelin, Chemnitz, Conch.-Cab. v. fig. 1510 ; Quoy 8f 

 Gaimard, Voy. 'Astrolabe,' pi. 61. figs. 19, 20; Kiener, pi. 19. fig. 1 ; 

 Reeve, I. c. xiii. pi. ii. fig. 8. 



Mergui ; Elphinstone Island Bay and Sullivan Island. Ceylon, 

 Singapore, Celebes, Philippines, New Ireland, Tonga. 



234. Trochus (Poltdonta) maculatus, L., Chemnitz, Conch.- 

 Cab. v. figs. 1615-1624 ; Kiener, pi. 29. fig. 1 ; Reeve, I. c. xiii. 

 pi. i. fig. 4. 



Mergui, Sullivan Island, and Owen Island. Singapore, Ceylon, 

 Moluccas, Mozambique, Philippines, Timor, Port Essington. 



235. Trochus (Poltdonta) costatus, Gmelin, Chemnitz, 

 Conch.-Cab. v. figs. 1643, 1644. 



Trochus maculatus, var., Kiener, pi. 29. fig. I a. 

 Trochus tentorium, Reeve, loc. cit. xiii. pi. iii. fig. 14. 

 Granules confluent in vertical rows. 

 Elphinstone Island. Ceylon, Nicobars. 



236. Trochus (Poltdonta) concinnus, Philippi, Zeitschr. 

 Mai. 1846, p. 105 ; Kuster, Monogr. Trochus, pi. 16. fig. 1 ; 

 Reeve, I. c. xiii. pi. iii. fig. 15. 



Trochus tubiferus, Kiener, pi. 37. fig. 3 (1852). 

 The granules of the lowest row above the suture increasing to 

 large tubercles. 



Owen Island. Mauritius. 



2:',7. Trochus (Poltdonta) radiatus, Gmelin, Chemnitz, 

 Conch.-Cab. v. iig. 1612 ; Reeve, I. c. xiii. pi. xiv. fig. 80; Kiener, 

 Fischer, pi. 97. fig. 1. 



( ) v, (ii I land. Madagascar, Ceylon, Java, Philippines. 



2')H. Clanculuh atropurl'Uricus, Gould, U. S. Exploring 

 Hoped., Moll. fig. 224, p. 189. 



King Inland; Owen Inland ; Sullivan Island. Samoa Islands. 



