34 LEPAS. 



bluish green, with six longitudinal streaks of black ; the tes- 

 taceous part consists of live small white distant valves, of 

 which the two larger are somewhat triangular, and placed at 

 the margin of the aperture near its base ; of the others, which 

 are all linear, two are on the sides near the summit, and one 

 at the back of the case. Mr. Wood says, that Mr. Mon- 

 tagu's L. membranacea differs only in colour, and in being 

 rather smaller. 



Among Dr. Solander's MSS. in Sir Joseph Banks's li- 

 brary, there is a description of another species of this family, 

 which he found adhering to a Medusa, on the coast of Brazil, 

 and to which he has given the name of L.pellucens, with the 

 following definition : " Lepas carnosa continua sub-diaphana, 

 supeme mutica coarctata, dorso rotundato, testis marginalibus 

 obsoletis." — It appears that he could not ascertain the num- 

 ber of the valves, for he only conjectures it is five. 



aurita. 42. Shell membranaceous, ventricose, 

 seated on a tube, and ending in two ear-like 

 appendages ; aperture with eight toothed 

 valves. 



Lepas aurita. Linnceus Si/st. Nat. p. 1110. Chemnitz, 



viii. p. 345. t. 100. f. 857 and 858. Schroeter Einl. iii. 



p. 524. Gmelin, p. 3212. Wood's Conch, p. 70. 1. 12. 



f. 4. 

 Philosophical Trans, l. t. 34. f. 1. Seba, iii. t. 16. f. 5. 



No. 2 and 3. ? Edwards's Gleanings, t. 286. f. A. 

 Inhabits the Northern Ocean. Linnaus. 

 This species in its size and construction a good deal resembles 

 L. vittata, but is terminated by two tubular appendages 

 projecting upwards like horses' ears. Linnaeus probably 

 erred in describing the mouth to have eight valves, for it is 

 not clear that Ellis intended to describe more than eight ser- 

 ratures ; and Mr. Wood, in his description of Dr. Leach's 

 specimen, has only mentioned two valves which are cruci- 

 form, and seated at the lower extremity of the aperture. — 

 Among Dr. Solander's MSS. there is the description of a 

 species under the name of L. midas, with five valves, which 

 he appears on this account only to have considered distinct 

 from the Linnaean L. aurita. It is, however, not impro- 

 bable that there may be more than one species with two 

 ears, and that they differ principally in the minute testaceous 

 valves. 



