of British MuUusca. 81 



sprinkled with red in tlic same manner as the margin of the 

 loot. Tentacles terniinatini;- above in a calyx-like expansion, 

 formed of five leatkt-like points, from the middle of which 

 rises the small, conical, smooth termination of the tentacle ; 

 this conical ])rocess is of small size, not exceeding that of the 

 divisions of the calyx, liranchinl processes in the form of a 

 waved raised curtain, surmounted by tiat triangular papilhe, 

 passing down each side of the back and uniting behind ; the 

 undulations of the curtain consist of three outwardly and four 

 inwardly directed folds on each side ; the fold which is nearest 

 the heatl is the largest ; the ))apillai on this fold are 18 to 

 20 in number; the papilh\j on all the folds vary consider- 

 ably in size, but there appears to be always one larger 

 than the rest ; they are capable of contraction and dilatation, 

 and are constantly changing their apj)arent dimensions while 

 the animal is in motion ; they are banded with deep dark 

 orange, while the small points in which they terminate are 

 pale orange. Lemjth 2\ inches. 



I dredged a single specimen of this very fine Nudibranch 

 off Berry Head, Torbay, June 25, 1875. 



It approaches both L.jiavidaSj A. & II., and L. porllaadi- 

 cus, Thompson, but differs in many particulars, and espe- 

 cially in the form of the tentacles, which have a very marked 

 character in the sniall size of their a[)ical portion, which pro- 

 jects beyond the calyx-like sheath and is quite simple and 

 shows no sign of ringing. The small size of these simple 

 and non-laminated tentacles and their peculiar cut-edged 

 sheath prevent my thinking that L. marmoratas is the young 

 and L. Uancocki the adult of one species, as has been sug- 

 gested by Mr. Garstang. 



Fam. 9. .Eolididse. 



Subfara 1. ^OLiDiN^. 



Genus 1. iEoLis, Cuvier, n9S = ^olidia, 

 Cuvier, 1817. 



Subgenus 1. ^olis, Cuv. (seus. strict.). 

 117. jEolis papulosa (Linn.). 



Cumbrae and Shetland {A. M. N.), ]\Ioray Firth (G. Mur- 

 ray), Hilbre Island [Byerley), North Wales and Isle ot Man 

 {Herdman), St. Andrews {M'Mos/i), Plymouth {Garslaiuj), 

 Firth of Forth [McBain ^'c). 



Distribution. \V. and S.W. France (F/scAer) , Kiel {Meyer 

 ^ Mobius), Denmark {March), Sweden {Lovea), Norway and 

 Ann. & Mag. N. Hist. Ser. 6. Vol. vi. G 



