' 
INDEX TO THE HISTORIA CONCHYLIORUM. 
31 
144, 
Tab. 
617. 
618 . 
3. Trochus Niloticus. 
4. Is probably a variety of Trochus melanostomus: but in Favanne, vol. ii. p. 17, it is 
said to be “ le Sapliir vcrt;” with which shell I am unacquainted, and which is 
said to be very rarely met with. Klein’s t. 2. f. 35. is a copy. 
619. 5. Is the Trochus tigrinus of Hebenstreit; which differs entirely from the Trochus ti¬ 
grinus of Chemnitz: and this shell in the Descriptive Catalogue has been ar- 
ranged erroneously as a variety of Trochus Niloticus. 
620. 6. Is the Trochus marmoratus of Lamarck, and the Trochus Niloticus, variety B, of 
the Descriptive Catalogue. 
621. 7- Unaccompanied by any description, it is difficult to ascertain the species to which 
this figure belongs: but it has been quoted by Favanne, vol. ii. p. 19, for a variety 
of “ 1’Etourneauand at p. 129. this variety is described with the name of “ le 
“ petit Papier marbre.” 
— 8. Trochus minutus. 
622. 9. Trochus solaris, variety B ; and these figures are reversed copics from Buonanni, 
Ricreatione, part 3. f. 366. and 367. 
623. 9. a. Is probably an imperfect shell of the abovementioned variety of Trochus so¬ 
laris. 
624. 10. Trochus Telescopium; and this figure has been taken from Buonanni’s Ricreatione, 
part 3. fig. 92. 
625. 11. Trochus Mauritianus. 
626. 11. a. Trochus dentatus. 
627. 13. Is “la Rotule” of Favanne; and has been generally considered to be a variety 
of Trochus concavus, but is probably a distinet species. Klein’s t. 1. f. 20. is a 
copy. 
628. 14. Trochus imbricatus. In the Portland Catalogue, this species is called Trochus 
Tectum; and the specimen there advertised with a reference to this figure, is said 
to be the only perfect one ever known. 
629. 15. Favanne, vol. ii. p. 305, under the name of “ le Raboteux,” has quoted this figure 
as a variety of “ le Concombre,” which is Trochus imbricatus. 
630. 16. Trochus fenestratus. 
631. 17- Trochus virgatus. 
— 18. Trochus Conus. 
632. 19. Is an uncertain figure; and has been quoted, with a mark of doubt, by Da Costa 
for Trochus papillosus. 
— 20. Trochus maculatus. 
633. 21. Trochus cinereus. 
634. 22. Answers to Chemnitz’ figures 1695. and 1696; and is the “ Cadran de Coromandel” 
of Favanne, vol. ii. p. 425. and the Solarium granulatum of Lamarck. Lamarck 
says, it may be known from Trochus perspectivus “ par ses granulations, meme 
“ en sa face inferieure, son defaut de stries longitudinales, et son ombilic resserre, 
“ ceint de dents epaisses.” 
635. 23. Trochus stramineus. 
636. 24. Trochus pei'spectivus; and the engraving appears to have been made by copying 
fig. 27. and 28. of Buonanni’s Ricreatione, so as to invert the figures. 
637. 25. Trochus Pharaonis, variety B. 
638. 26. Trochus Pharaonis, variety A. 
639. 27. Trochus variegatus. 
— 28. Quoted by Favanne for a Trochus from the Philippine islands, which he calls “la 
“ Perdrix rouge.” 
640. 29. Is an uncertain figure, and has been quoted by Montagu, with a mark of doubt, for 
his Trochus umbilicatus; but Favanne (vol. ii. p. 123.) considers it to be “ le 
“ Bouton de la Nouvelle Zelande,” which is a very different shell. 
— 30. Turbo Pica; and Kleins t. 2. f. 52. is a copy. 
641. 31. Trochus cinerarius. 
— 32. Trochus Magus. 
642. 33.1 T r ochus turbinatus; and Klein’s t. 2. f. 53. and 54. are copies. 
— 34.) 
643. 35. A worn shell of Trochus crassus. 
•> . 
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