40 
Bemerkung: Cheesemann 1. c. beschreibt das Thier in folgender Weise: 
Body 3 — 4 inches long, broadly elliptical, depressed, nearly equally rounded 
at botli ends, colour varying from pale pulf to a clear reddish brown, with irre- 
guarly disposed blotclies of a rieh dark red-brown; mantlie large, extending over 
and concealing both liead and fort, quite smooth, margin thin, entire ; dorsal tenta- 
des short, stout, abruptly truncate, finely, transversely wrinkled, approximate at 
their origin, bat gradually, diverging at their apices; colour reddish brown tipped 
with white, eye-specks blae, placed a little distance the behind the tentacles, em- 
bedded in the integument, but appearing trough it; oral tentacles United in front 
by a thin semicircular expansion which froms a veil concealing the mouth, and 
which is carried in advance of the foot; mouth roundish, with fleshy lips; buccal 
plates two, regularly reticulated; odontophore with numerous rows of similar unci- 
form teeth. Bronchial plume placed in the groove betwen the foot and the mantle, 
very large, composed of about 22 — 24 pectinations ; foot oblong, thin and flexible, 
pale waxy white. 
12. Pleurobranchus testudinarius Conlraine. 
Taf. 8. Fig. 12. 13. 
Pleurobranchus Forskahlii delle Chiaje Mem. III p. 150 et 154 t. 41 
fig. 11. 
— mamillatus Schultz 1836 in Philipp! Bnum moll. Sicii. 
I. p. 112. 
— tuberculatus Cantr. 1840 Mal. medit. p. 89. 
— testudinarius Cantr. 1840 1. c. p. 88. 
— — Vaissiere 1880 Journ. Conch. XXYI1I 
p. 209 t. 7 fig. 3. 
— — Locard Cat. gen. p. 64. 
Susania testudinaria Monterosato 1884 Nom. Conch. med. p. 149. 
T. oblongo-ovata, tenuis, membranacea, flavida. 
Gehäuse länglich-eiförmig, dünnschalig häutig, von gelblicher Farbe. 
Vaterland: Mittelmeer. 
