560 THE VOYAGE OF H.M.S. CHALLENGER. 



3. Triforis, Deshayes, 1824. 

 Species. 



1. Triforis pierversa (Linne). 4. Triforis hebes, Wats. 



2. Triforis levukensis, Wats. 5. Triforis inftata, Wats. 



3. Triforis bigemma, Wats. 6. Triforis dolicha, n. sp. 



7. Triforis rufula, n. sp. 



1. Triforis perversa (Linne). 



Trochus perversus, Linne, Syst. Nat. (ed. 12), p. 1231, No. 602. 



Chemnitz, Coneh. Cab., vol. is. (1), p. 115, pi. cxii. fig. 958. 

 Cerithium maroccanum, Bruguiere, Encycl. method., vers, vol. i. p. 495, sp. 34. 



„ perversum, Bruguiere, Encycl. method., vers, voL i. p. 49G, sp. 36. 

 Murex granulosus, Brocchi, Conch, foss. subappen., vol. ii. p. 449, pi. is. fig. 18. 

 Trochus perversus, Dillwyn, Catalogue, vol. ii. p. 811, sp. 121. 

 Murex adversus, Wood, Ind. Test., p. 139, pi. xxviii. fig. 167. 



Cerithium perversum, Lamarck, Anim. s. vert., vol. vii. p. 77, and (ed. Desh.) voL is. p. 305, sp. 36. 

 ,, „ Kiener, Iconog., p. 75, sp. 60, pL sxv. fig. 1. 



„ ,, Philippi, Enumeratio, vol. i. p. 104, sp. 4, vol. ii. p. 162, sp. 5. 



„ „ d'Orbigny, Moll. Canaries, p. 93, No. 144. 



Triforis adversa, Loven, Index Moll. Skandinav., p. 21, No. 156. 

 Cerithium adversum, v. Middendorff, Malak. Ross., vol. ii. p. 481, sp. 2. 



„ „ Forbes and Hanley, Brit. Moll., vol. iii. p. 195, pi. xci. figs. 5, 6. 



„ perversum, Searles Wood, Crag. Moll, Pal. Soc. 1S48, vol. i. p. 72, pi. viii. fig. 8. 

 „ „ Hb'rnaes, Foss. MolL Wien. Beck., vol. i. p. 414, sp. 24. 



„ adversum, M'Andrew, Distrib. Test. Moll. North Atlantic, p. 31. 

 Trochus perversus, Hanley, Ipsa Linn. Conch., pp. 324, 529. 

 Cerithium perversum, Gwyn Jeffreys, Brit. Conch., vol. iv. p. 261, and vol. v. p. 217, pL lssx. 



fig. 5. 

 Triforis perversa, Weinkauff, Conch. Mittelmeer., vol. ii. p. 167, sp. 1. 

 „ „ Aradas and Benoit, Conch. Mar. SiciL, p. 240, No. 645. 



„ ,, Monterosato, Enumerazione, p. 38. 



„ ., Seguenza, Formaz. Terz. Calabria, pp. 109, 263, 319, 354. 



„ ,, Gwyn Jeffreys, Moll. "Lightning" and "Porcupine," Proc. Zool. Soc. Lond., 1885, 



p. 57, sp. 1. 



February 10, 1873. Tenerife, Canaries. 70 fathoms. 



Station 75. July 2, 1873. Lat. 38° 38' N., long. 28° 28' 30" W. Off Fayal, Azores. 

 450 to 500 fathoms. Volcauic mud. 



Station 122. September 10, 1873. Lat, 9° 5' S. to 9° 10' S., long. 34° 50' W. to 

 34° 53' W. 350 fathoms. Red mud. 



Habitat. — From Norway (Loven) to the Mediterranean (Monterosato), the Crimea 

 (v. Middendorff), Madeira (Watson), and the Canaries (M'Andrew). 



Fossil. — From the Upper Miocene, 'over all Europe (Hornses), onwards (Seguenza). 

 to 120 feet (Jeffr.) 



