- 121 — 



29. T. circulare Grun. forma IV — appendiculata V. H. Syn. tab. CVIII, 

 fig. 10. 



KKt (3 samples). 

 Area: Barbadoes. 



30. T. dubium Bright. A. S. Atl. tab. LXXVIII, figs. 34-35. 

 KGn, KKt, KMn-GLt (22 samples). 



Area: Gampeachy Bay, Madagascar, Algoa Bay, Malay Archipelago, Sand- 

 wich Islands. 



31. T. orbiculatum Shad. Jan & Rabh. Hond. tab, II, fig. 5. 

 Only found in a sample without habitat. 



Area: Honduras, Port Natal, Malay Archipelago. 



32. T. punctatum Bright, forma trigona minuta V. H. Syn. tab. CIX, 

 fig. 10. 



KKt (3 samples). 

 Area: Seychelles. 



33. T. scitulum Bright. A. S. Atl. tab. LXXXIII, fig. 11. 

 KKm, KMn— GLt (2 samples). 



Area: Gulf of Mexico, Gampeachy Bay, Malay Archipelago. 



— — forma qvadrata A. S. Atl. tab. LXXXIV, figs 5 — 6. 

 KKm (2 samples). 



Area: Gampeachy Bay; Singapore. 



34. T. Shadboltianum Grev. A. S. Atl. tab. LXXX, figs. 18—19. 

 Found only in a sample from KKt. 



Area: Samoa, Tahiti. 



This species is (Ind. Oc. & Malay Archip. p. 32) referred by Cleve 

 to Trie, orbiculatum Shadb. 



35. T. (Amphitetras) parvulum Jan. & Rabh. Jan & Rabh. Hond. 

 tab. I, fig. 4. 



KKt (2 samples). 

 Area: Honduras. 



36. Triceratium sp. Tab. nostr. I, fig. 4. 



Triangular with a single prominent central spine. Distance 

 between the angles 0,047 ram., striæ counted along the margin 14 

 in 0,01 mm. radiated and composed of puncta. 



Solitary in a sample labelled: „Off Tung Kaben". 



