42. PSEUD0SCARD8. 217 



scales on the cheek ; dorsal spines more or less flexible ; anterior 

 teeth soldered together, arranged in quincuncial order ; the denti- 

 gerous plate of the lower phaiyngeal longer than broad. D. ^• 

 A. |. L. lat. 23-25. 

 Seas between the tropics. 



By far the greater portion of our kiiowledge of this genus is duo 

 to the labours of Dr. v. Blocker, who first pointed out the characters 

 by which the species may be determined. Valencionnes's descriptions, 

 or rather notes, are so superficial, that it is impossible to recognize 

 the sjjccies which have served him as types. The species of this 

 genus are so numerous, and their distinctive characters really appear 

 to depend so much on the colours, whicli rapidly fade after dcatli, that 

 it will always be very difficult to determine preserved specimens. 

 Moreover the colours certainly change with age ; and as the greater 

 part of the species appear to attain to a very large size, we shall know 

 only the immature state of many of them, — very large individuals 

 being but rarely brought to this country and preserved in collections. 

 We have admitted in our diagnoses the shape of the caudal fin, and 



2. Scarus rubronotatus, Cuv. ^- Val. xiv. p. 212. — Red Sea. 



3. trispinosus, Cuv. <}'- Vu!. xiv. ]>. 182. — Hcih. ? 



4. nunctulatus, Cuv. tf Val. xiv. j). l'J5. — Martinique. 



5. flavo-marginatus, Cuv. if- Val. xiv. p. 202. — Martinique. 



6. men talis, Cm', cf Vnl. xiv. p. 233.— Red Sea. 



7. Russell, pi. 1 19. — Scarus russelii, Cuv. ^ Val. xiv. p. 234. — East Indies. 



8. Scarus capistratus, (K.dj-v. H.) Cuv. &( Val.xiv. p. 239. — Java. 

 9. scaber, Cuv. 8c Val. xiv. p. 239. — Mauritius. 



10. ferrugineufl, Forsk. p. 29 ; liiqyp. All. Fisrhc, p. 79. — Red Sea. 



11. cyancscens, Cuv. S^ Val. xiv. p. 204. — Mauritius. 



12. variegatus, Cuv. Sf Val. xiv. p. 25G. — Mauritius. 



13. taeniurus, Cuv. Hf Val. xiv. p. 257. — Mauritius. 



14. cyanurus, Cuv. Sf Val. xiv. p. 261. — Djetta. 



15. bcnnettii, Cuv. Sf Val. xiv. p. 270. — Sandwich Islands. 



IG. scabriuBCulus, Cuv. 8f Val. xiv. p. 271. — Java. 



17. arcuatus, Cuv. <|- Val. xiv. p. 276. — Siam. 



18. purpureus, Cuv. 8f Val. xiv. p. 277. — Ulea. 



19. craentatus, Cav. ic Val. xiv. P. 277.— Ulea. 



20. spilurus, Cuv. iSf Val. xiv. p. 279. — Caroline Islands. 



21. roseiceps, Cuv. Sf Val. xiv. p. 279. — Ulea. 



22. frontalis, Cuv. Sf Val. xiv. p. 280.— Ualan. 



23. mertensii, Cuv. iSf Val. xiv. p. 281. — Ulea. 



24. festivus, Cuv. Hf Val. xiv. p. 282. — Had. — ? 



25. forinosus, Cuv. if Val. xiv. p. 283. — Sandwich Islands. 



26. nuchalis, Poey, Mcm. Cub. ii. p. 220. — Cuba. 



27. ccelestinus, Cuv. Sf Val. xiv. p. 180. — St. Thomaa. 



28. turchesius, Cuv. 8c Val xiv. p. 181. — Porto Rico. 



29. venosuB, Cuv. Sf Val. xiv. p. 212. —Mauritius. 



30. nigricans, Cuv. 8c Val. xiv. p. 213. — Red Sea. 



31. cajrulescens, Cuv. Sr Val. xiv. p. 230. — Red Sea. 



32. lunulatus, Cuv. 8r Val. xiv. p. 268.— Red Sea. 



33. forstei-i, Cuv. Sf Val. xiv. p. 275. — Otaheiti 



34. lacrimosus, Pon/, Mem. Cuh. ii. 1861, p. 422. — Cuba. 



36. humeralis, Poey, I. c. — Cuba. 



36. distinctus, Poey, I. v. p. 423. — Cuba. 



37. circuninotatus, Poey, I. c. — Cuba. 



38. atomarius, Poey, I. c. — Cuba. 



