LEPIDONOTUS. 109 



and can move with considerable quickness. Some of them swim 

 easily in a wriggling manner, but they hasten to find the bottom. 

 They have the power of renewing the scales, which are frequently 

 removed by abrasion and injuries. It has been generally assumed 

 that the number of pairs is constant in every species, and affords a 

 most obvious discriminative character; but Sir John G. Dalyell 

 doubts, or rather denies this ; his observations on this genus are, 

 however, very unsatisfactory, from not having distinguished the 

 species with any care. 



* Scales 12 pairs, fixed. Tardigrade. 



1. L. squamatus, scales ovate and reniform, imbricate, granulous, 

 ciliated on the outer margin ; tentacula and tentacular cirri incras- 

 sated below the point ; bristles of the ventral branch with sharp 

 denticles on the thickened portion of the shaft below the smooth 

 talon-like apex. Length 1-2" ; breadth 3'". Plate VII. fig. 1. 



Aphrodita squamata, Linn. Syst.x. 655; xii. 1084. Pallas, Misc. 



Zool. 91. tab. 7. f. 14 a-d. Bast. Opusc. Subs. ii. 66. pi. 6. f. 5. 



Penn. Brit. Zool. iv. 44. pi. 23. f. 26, and edit. 1812, iv. tab. 25. 



f. 2. Turt. Gmel. iv. 80; Brit. Faun. 136. Stew. Elem. i. 387. 



Dalyell, Pow. Great, ii. 166. pi. 24. f. 4-10. 

 Gediipfelte Aphrodite, Miill. Wurm-Arten, 171. tab. 13, copied in 



Encyclop. Meth. Vers, pi. 61. f. 21-26. 

 Aphrodita scabra, Penn. Brit. Zool. iv. 88. Turt. Gmel. iv. 80; Brit. 



Faun. 136. Stew. Elem. i. 387- Jameson in Wern. Mem. i. 557. 

 Aphrodita pedunculata, Penn. Brit. Zool. iv. 45. pi. 24. f. 27, and 



edit. 1812, iv. 87. tab. 26. f. 2. 

 Aphrodita longirostra, Bruguiere, Encyclop. M4th. vi. 86. Bosc, Vers, 



i. 182. 

 Aphrodita punctata, Mull. Zool. Dan. Prod. 218. Bosc, Vers, i. 182. 



Jameson in Wern. Mem. i. 558. 

 Polynoe squamata, Savig. Syst. Annel. 22. Lam. An. s. Vert. v. 309 ; 



2nde edit. v. 544. Stark, Elem. ii. 139. Aud. Sf M.-Edw. in Ann. 



des Sc. nat. xxvii. 416. pi. 7- f- 10-16?; Hist. Litt. de la France, 



ii. 80. pi. 1. f. 10-16? Johnston in Ann. Nat. Hist. ii. 432, and v. 



307. Templeton in Loud. Mag. Nat. Hist. ix. 234. H. Rathke in 



Nov. Act. CcBsar. Curios, xx. 149 (1843). Williams in Rep. Brit. 



Assoc. 1851, 237. f. 62. Grube, Fam. Annel. 36. 

 Eumolphe punctata, Blainv. Diet. Sc. nat. Ivii. 458. 

 Polynoe scabra, Johnston in Zool. Journ. iii. 331. 

 Lepidonotus verrucosus. Leach, Mus. 

 Lepidonotus granularis. Leach, Mus. 

 Lepidonota punctata. Oersted, Annul. Dan. Consp. 12. f. 2, 5, 39, 41, 



47 &48; Gro£nl. Annul. Dorsibr. 16; Kroyer^s Naturh. Tidsskr. 



112 (1842). 



Hab. The coralline region : common. 



Desc. Body generally about one, rarely two inches long, depressed, 

 linear-oblong, of equal breadth at both ends, of a uniform cinereous 

 colour, rough: scales twelve on each side*, rather large, ovate, im- 



* They are placed over the 1, 3, 6, 8, 10, 14, 16, 18, 20 and 22 pairs of feet. 



k 



