158 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



length. The anterior angles of the foot are produced into straight, 

 stout processes. 



The jaws are white and thin, with a single row of large irregular 

 denticles. The radula consists of a single series of 16-18 white teeth, 

 of horseshoe shape, with 7-8 lateral denticles extending up the sides 

 of the central cusp. The bases of these denticles overlap, which 

 gives the impression that there is a row of small secondary denticles 

 below the main projections. This, however, is not, as a rule, really 

 the case, though such secondary denticles do occur, but rarely. The 

 penis, of the form usual in the genus, is armed with spines which 

 have thick bases and are not very much bent. 



These specimens can, I think, be referred to F. Drummondi, which 

 (including the foiTas registered by Bergh as synonyms) is recorded 

 from Scandinavia to the Mediterranean. 



Favoeinus carneus? (Alder & Hancock). PL XIV, Figs. 13, 14. 

 Eolis cwrnea, Alder & Hancock : Brit. Nudibranch. Moll., pt. vii, p. 50, 

 and Appendix, p. ix ; Bergh, Verhandl. zool.-botan. Wien, 1875, 

 vol. XXV, p. 641, Favorinus; 1883, vol. xxxii, p. 38; Trinchese, 

 -Solid, del Porto di Genova, pt. ii, p. 67, Favorinus. 



Two specimens. Mr. Crossland's notes are as follows : — 



" Purple -Solids. 2 fathoms, Porto Sal Bei, Boa Yista Island. 



" Cerata of a rather light purple or violet colour; body white. 

 Tentacles long, rhinophores fairly so, and contractile. Foot drawn 

 into short tentacles in front, and into a short tail behind. The cerata 

 are easily lost, e.g. in picking the beasts from the weed on which they 

 were found. Both were found on the same piece of weed, and there 

 seem to have been no hydroids in the vicinity. 



"The rhinophores are much longer and more slender than in any 

 species hitherto seen. Length about the same as the oral tentacles, 

 but very contractile, smooth, but with two swellings distally as in the 

 sketch. Both specimens are alike in this. The rhinophores are brown 

 basally, white after the first swelling. There are opaque white specks 

 on the body, a few on the cerata, and a white ring immediately below 

 the base of the latter." 



The largest of the preserved specimens is 8 mm. long and 3 broad. 

 Both have lost all their cerata, but, from the marks remaining on the 

 body, it would appear that they were set in four distinct horseshoes, 

 on slight prominences, with a fifth less distinct group, or pair of 

 groups, near the tail. The rhinophores are much contracted, but the 

 peculiar conformation described (Fig. 13) can still be traced. The 

 anterior margin of the foot is drawn out into two short tentaculiform 

 processes. 



The jaws bear a row of long filament-like denticles, and, at its base, 

 two or three rows of much smaller denticles. The uniseriate radula 

 consists of 18 quite smooth teeth, as in Trinchese's plates of Favorinus 

 versicolor (^olid. Porto di Genova, pt. ii, pi. xxxiii, fig. 1), but 

 somewhat less bent, and with stronger bases (Fig. 14). 



This is perhaps the Folis carnea of Alder & Hancock, recorded 

 from Salcombe Bay. It agrees fairly well with their description, in 



