52 



4. Agaronia contortuplicata. 



Pillar white ; shell grey ; throat dark red-brown. 



Oliva contortuplicata, Reeve, C. 1. 1. 20. f. 51 . 

 Hab. Senegal. 



** Anterior belt broader. 



5. Agaronia hiatula. 



Pillar purple-brown in front ; belt brown or white. 



Voluta hiatula, Gmelin, S. N. 3442 ; Dillw. R. S. 518. 



V. rinyens, Soland. MSS. 



Oliva hiatula, Lamk. no. 52 ; E. M. t. 368. f. 5; Reeve, C. I. 

 t. 18. f. 35. 



Oliva hiatula, var., Duclos, Oliv. t„ 3. f. 14, 15, t. 4 bis, f. 17-21. 



Ancilla macula t a, Schum. 



Hiatula Lamarckii, Swains. 



Hab. Mouth of Niger (Adanson); East coast of Africa (Capt. 

 Owen}. 



6. Agaronia nitelina. 



Pale brown ; front belt rather wide ; inner lip pale brown. 



Oliva nitelina, Duclos, Oliv. t. 3. f. 1, 2. 

 Oliva ancillarioides, Reeve, C. 1. 1. 21. f. 55. 

 Hab. Kurrachee. 



9. Olivina. 



Shell subcylindrical ; spire conical ; sutural groove open to the 

 tip ; aperture linear or subovate ; inner lip defined ; pillar obliquely 

 twisted in front and obliquely grooved ; belt single, rather narrow. 

 Foot (01. puelchana) short, much shorter than the shell, very broad, 

 rounded at the sides, enveloping the front of the shell ; front lobes 

 very small, narrow, acute at the sides. Head almost hidden. Ten- 

 tacles none. Operculum distinct (D'Orb. Voy.). 



* Shell white, aperture narrow. 



1. Olivina gracilis. 



Throat purplish. 



Oliva gracilis, Sow., Gray, Beechey, Voy. 130. t. 36. f. 1 ; Duclos, 

 Oliv. t. l.f. 17, 18 ; Reeve, C. 1. t. 20. f. 46. 



2. Olivina Razamola. 



Oliva razamola, Duclos, Oliv. t. 6.f. 3-6. 



3. Olivina Caldania. 



Oliva caldania, Duclos, Oliv. t. 6, f. 3, 4. 



