114 APHRODITACE.E. 



his elaborate description with ours*. The species is interesting as 

 connecting those Lejjidonoti that have fixed scales with those that 

 have them deciduous. In form and size, and in its structure and 

 appendages generally, it closely resembles L. cirrhatus. 



Obs. 1 have seen one specimen only, and it had lost most of its 

 dorsal cirri. I cannot refer it to any described species, but it is 

 closely allied to L. asshnilis and L. scahra. The 13th and 14th pairs 

 of scales seemed to be fixed like those of L. squamatus. 



Plate III. Figs. 17, 18, 19. Lepidonotus pharetratus. a. Bristles of 

 the superior branch, b. Bristles of the inferior branch. 



5. L. cirratus, scales fifteen pairs, ovate or reniform, imbricate, 

 entirely covering the back, variegated or punctate, smooth, with a 

 ciliated exterior margin ; tentacular appendages smooth, incrassated 

 below the point, and ringed with black ; feet thirty-seven pairs ; ven- 

 tral bristles bidentate at the apex, and spino-denticulate on the shaft 

 for about a third of its length. Length 1-li", PI. III. fig. 2. 



Aphrodita cirrata, Fabric. Faun. Groenl. 308. tab. f. 7- Bosc, Vers, 



i. 183. 

 Aphrodita squamata, Penn. Brit. Zool. iv. 9''], exclus. fig. Dalyell, 



Pow. Great, ii. 166. pi. 24. f. 8. 

 Aphrodita imbricata, Penn. Brit. Zool. iv. 88. Stew. Elem. i. 388. 



Jameson in Wern. Mem. i. 558. 

 Aphrodita violacea, Mull, Zool. Dan, Prod. 218. no. 2645. Turt. 



Gmel. iv. 81. 

 Aphrodita plana, Stew. Elem. i. 388. 



Aphrodita varians, Dalyell, Pow. Great, ii. 167- pi- 24. f. 11, 12. 

 Polynoe imbricata, Johnston in Zool. Journ. iii. 332 & iv. 421. 

 Polynoe cirrata, And. ^ M.-Edw. in Ann. des Sc. nat. xxvii. 422; 



Hist. Litt. de la France, ii. 86. Johnston in Ann. Nat. Hist. ii. 434 



& V. 307. Sars in ibid. xvi. 183. H. Rathke in Nov. Act. Curios. 



GcEsar. xx. 150 (1843). 

 Polynoe lepidota, Johnston in Zool. Journ. iii. 333. 

 Lepidonota cirrata, Oersted, Annul. Dan. Gonsp. 13. f. 43, and in 



Kroyer's Naturh. Tids. Ill (1842). 

 Lepidonotus planus. Leach, Mus, 



Hab. The littoral region : common. 



Desc. Body elliptic-oblong, somewhat narrowest posteriorly, about 

 \^ inch long, 3 lines broad, variously coloured, of a uniform olive, 

 brown, or mottled, often marked with a series of pale spots along 

 the sides, one to every scale, sometimes with a red band down the 

 back, and sometimes pied with lighter and dark shades ; belly perla- 

 ceous, with a red central line from a blood-vessel appearing through 

 the skin. Head mostly concealed by the anterior scales, cordate, 

 vrith an impressed line in the middle, pink-coloured or reddish, with 

 four eyes placed wide asunder. Anteiniae three, the medial largest, 



* Oersted's description and figure show that the true Aph. scabra {Lepidonota 

 scabra of Oersted) differs in having a head entire and pointed in front, pilose ten- 

 tacula and palpi, and very rough scales. The hristles appear to be nearly alike 

 in both species. — Annul. Dorsibr. 12. tab. 1. figs. 2, 7, 10, 12, 13, 17, 18. 



