Facelina.] GASTROPODA. 583 



and not very clear denticles. Penis armed with numerous small pro- 

 minences or spines. (Eliot.) 



Length, 13 mm. ; breadth, 3 mm. 



Hob. Dunedin Harbour, one specimen (H. S.). 



Remarks. This seems to be a typical Facelina. The dentition 

 agrees with F. Stearnsi, recorded from California, but without more 

 data as to the colour and appearance of the living animal identification 

 is impossible. (Eliot.) 



Genus 4. EOLIDIA, Cuvier, 1817. 



Eolidia, Cuvier, " Regne Animal," ii, 1817, 393. Type : Umax papillosus, L. 

 Rhinophores simple ; cerata compressed. Eadula uniserial, the 

 teeth arched and the posterior margin regularly pectinated. 



1. Eolidia longicauda, Quoy and Gaimard, 1832. Plate 23, fig. 20. 



Eolidia longicauda, Q. & G., Voy. Astrol., ii, 1832, 288, pi. 21, f. 19, 20 ; 

 Gray, Dieff. N.Z., 119. Molis (Phidiana) longicauda, Q. & G.. Crit. 

 List, 38. Phidiana longicauda, Q, & G., M.N.Z.M., 129 ; T.N.Z.I., 

 xiii, 203. Facelina longicauda, Q. & G., Index, 68. 



Body elongate, thin, the foot spreading beyond the body on either 

 side, it is wavy, pointed, and ending in a tail. Colour white, diaphanous. 

 Back with a slight groove, and in front it is separated from the mouth 

 by a transverse groove. The 4 tentacles are long, fusiform, pointed. 

 The upper tentacles are longer, inserted on the top of the head, and 

 approximate at their bases ; lower tentacles distant, a little above 

 the mouth. There are no eyes. The cerata are arranged in several 

 lateral rows upon the back. They are elongated, subcompressed. 

 Anal orifice on the back, having sometimes the appearance of a rosette. 

 Genital orifice on the right anterior side. Top of the head reddish- 

 yellow ; dorsal surface and cerata brownish ; rest of the body white. 

 (Q. & G.) 



Length of largest specimens, about 55 mm. ; length of tail, not 

 less than 13| mm. 



Type in the Mus. Hist. Nat., Paris. 



Hob. Cook Strait, on Fucus (Q. & G.). 



Remarks. The generic position of this species is uncertain. 



Genus 5. HERVIA, Bergh, 1871. 



Hervia, Bergh., Naturh. Foren-Vidsk. Meddel., 1871, 183 ; Bergh., Beitrage 

 zur Kenntniss der JSolidiaden, ii, 1875. Type : H. modesta, Bergh. 

 Hervia, Vayssiere, Ann. Mus. Hist. Nat. de Marseilles, Zoologie, iii, 

 1888, 51. Rizzolia, Trinchese, 1877. 



Animal elongated and slender, the back well rounded ; foot a 

 little shorter than the body, with anterior tentaculiform processes. 

 Labial tentacles long, cylindro-conic ; rhinophores smooth, a little' 

 shorter and stouter than the labial tentacles, distally attenuated. 

 The tegumenta-ry papillse are disposed in indistinct groups on the 



