NOTARCHUS. 137 
The figures of Cuvier, Rang and Mobius correspond moderately 
well. Rang’s (pl. 61, figs. 56, 57, 58,) were drawn from specimens 
which had been in alcohol. The figures given by Quoy and Gaimard 
(pl 17, figs. 12, 13) represent the living animal; but are so different 
from the others as to excite suspicion that a distinct species may be 
represented. Whether this diversity is wholly due to the fresh or 
alcoholic condition of the specimens figured cannot readily be de- 
cided. 
N. puncratus Philippi. Pl. 40, figs. 1-13. | 
Length 8-45 ecm. or less. Animal oblong, swollen and much 
dilated at the sides, acute behind (figs. 1, 38, 12,13). Head globose, 
on a rather short neck. Anterior tentacles cylindric-conic, cpen 
above, the margins rolled together below, continuous with the frontal 
veil (fig. 4, head seen from beneath). Rhinophores shaped like the 
tentacles, but open behind; the eyes sunken in the integument a 
little in front of the bases of the rhinophores. Surface of body 
bearing numerous somewhat dendritic or branching conic tubercles, 
irregularly scattered. Foot forming a smooth, quite narrow band, 
acute behind. .Penis having a number of chitinous spurs distributed 
over its surface (fig. 11). 
Color in life a yellow-fawn tint, with irregular spots of deeper 
color and a minute white punctation. Alcoholic specimens retain 
quite well the general tint, but the tissues lose their transparence. 
Shell (fig. 10, magnified 25 diameters) minute, diam. 2 mill., very 
fragile, hyaline, placed under the mantle behind the anus, of the 
form of that of Coriocella. 
Mediterranean: Gulf of Marseilles, 15-25 metres, on Zostera 
(Vayssiére) ; Palermo (Philippi, Monterosato) ; Nice (Verany). 
Notarchus punctatus Puin., Enumeratio Molluscorum Siciliz, 
1836, p. [255], pl. 7, f. 9 —VayssrERE, Journal de Conchyl., 1882, 
p- 271, pl. 11, f. 8; Recherches Zool. et Anat. sur les Moll. Opisto- 
branches du Golfe de Marseille, p. 77, pl. 3, f. 77-85; pl. 4, f. 86—- 
95 (shell, anatomy). 
This Mediterranean species is now well known by the work of 
Vayssiére. The larger tubercles of the surface are arranged in a 
median series behind the gill slit, and two irregular rows on each 
side. The presence of a minute vestigial shell was first demonstrated 
by Vayssiére. 
