Eolis.] GASTROPODA. 581 



distinct groups on each side of a clear broad line running from the 

 base of the rhinophores to the tip of the tail. Oral tentacles subulate, 

 rather distant, about twice as long as the greatest width of the animal. 

 Rhinophores approximate, about half as long as the tentacles. Foot 

 expanded, produced in front, margin thin, slightly puckered. Colour : 

 Body and foot pale pink ; tentacles and papillae bright red. promi- 

 nently tipped with white. 



Length, 23 mm. 



Hob. Napier, on Ulva (A. Hamilton). 



2. Eolis leptosoma, Hutton, 1884. 



Molis leptosoma, Hutt, T.N.Z.I., xvi. 1883 (1884), 213. 



Animal small, elongated, the tail rather short, pointed ; minute 

 eyes behind the tentacles. Rhinophores and oral tentacles subulate, 

 the latter distant at their bases. Papillce as long as the breadth of 

 the animal, crowded, in about 12 transverse rows on each side of 

 the back. Foot rather expanded, the margin thin, not crisped nor 

 produced in front. Colour yellowish-white, with some thin lines of 

 reddish-yellow on the head and back ; dorsal papillae brownish-grey, 

 tipped and slightly margined with white. 



Length, 10 mm. 



Radula consisting of about 36 uniserial rows of teeth. Each 

 tooth strongly arched, with 6 or 7 cutting-points, the central being 

 rather larger than the others (Hutton, i.e.. 213, pi. 11, f. 2). 



Hab. Lyttelton Harbour, on Sertularians (Hutton). 



Genus 2. vEoLiDiELLA, Bergh, 1867. 



j<Eolidiella, Bergh, Videnskabilige Meddelser d. Naturh. Forening, 1867, 99. 

 Type : A. Sommeringii, Leuc. 



Animal having the form of Eolis. Rhinophores simple. Teeth 

 of radula pectiniform, emarginate at the middle. Salivary glands very 

 large. 



^Eolidiella drusilla, Bergh, 1900. 



Molididla drusilla, Bergh., Zool. Jahrb. Syst., xiii, 3, 1900, 233, pi. 20, 

 f. 41-46. 



Form, of animal somewhat depressed, but little narrowed in front 

 and behind. Head short and rather broad ; tentacles with a thick 

 base. The white rhinophores between the first anterior rows of the 

 dorsal papillae cylindrical and truncated. Only the anterior fourth 

 of the back without papillce in the middle, the remainder crowded 

 with them ; they are arranged in about 25 rows, most of which are 

 obliquely directed forward and outward. The anterior rows have 

 3-4, 7-8, 11-12 papillae, the sixth row 21, and the number does not 

 increase much ; the last rows with a few papillse only. They are 

 slightly bent, cylindrical, and pointed at the end. Anal papilla situated 

 between the fifth and sixth row of papillae, and a little in front is the 



