4. liALISTES. 221 



bi'ownish olive ; an indistinct blackish band between the ej'c and 

 the root of the pectoral fin. Scales generally with the centre darker. 

 Posterior margin of the caudal fin blackish. 

 Indian Ocean and archipelago. 



a. Adult : stuffed. Red Sea. From Dr. Uiippell's Collection. 



b. Half-grown : stuff'ed. Zanzibar. From Lieut.-Col. Playfair's 



Collection. 



c. Adult (20 inches) : stuffed. Mauritius. From Dr. Janvier's 



Collection. 



j8. Cheeks with nahed f/rooves or stripea. 



13. Balistes riiigens. 



Cocuyo, Purra, p. 19, lam. 11. fig. '2. 

 Balistes, sp., Gronov. Zoophyl. nos. 190 & 19G. 

 Balistes ringens, L. Syst. Nat. i. p. 407. 



curassavicus, Gm. L. i. p. 1472 ; £1. Schn. p. 475. 



notatiia, Gronov. Syst. ed. Gray, p. .36. 



nitidus, Gronov. I. c. (young). 



lineo-pimctatus, Hollard, Ann. Sc. Kat. 1854, i. p. 6.5. 



cicatricosus, Poei/, Mem. Cub. ii. p. 327; and Proa. Acad. Nat 



Sc. Philad. 1863, p. 181. 



D. 2 I 29. A. 27. L. lat. 38. 



Tail without spines or tubercles. Eighteen scales in a transverse 

 series running from the origin of the dorsal fin to the vent. Ho en- 

 larged plates behind the giU-opening. Teeth deeply notched, but 

 the front teeth do not much project beyond the line of the other 

 teeth. Cheeks with three very distinct naked, narrow, blackish lon- 

 gitudinal grooves. Anterior dorsal and anal rays and caudal lobes 

 but slightly produced. Ventral spine moveable. Each scale with a 

 blackish spot at the base ; the spots confluent into narrow longitu- 

 dinal lines in examples from Mauritius. 



West Indies ; Mauritius. 



a. Seven and a half inches long : stuff'ed. Mauritius. From Dr. 



Janvier's Collection. 

 h. Eight inches long : skin. Jamaica. Purchased of Mr. Parnell. 



c. Adult. Cuba. From the Collection of the Zoological Society. 



d. Adult : skin. From Gronow's Collection. — Type of B. notatus. 



e. Young : skin. From Gronow's Collection. — Type of B. vitidvs. 



f. Fine specimen, 9| inches long. Voyage of the ' Herald.' 



14. Balistes auromarginatus. 



Balistes auroniarpinatus, Benn. Proc. Cotnm. Zoo/. Soc. i. p. 168. 

 calolepis, IloUard, Ann. Sc. Nat. i. 1854, p. 67, pi. 3. fig. 5. 



D. 3 I 28. A. 25. L. lat. 43. 



Each scale on the tail and hind part of the trunk with a rough 

 keel. Twenty scales in a transverse series running from the origin 

 of the soft dorsal fin to the vent. No enlarged plates behind the 

 gill-opening. The scales on the cheek are separated by naked Ion- 



