GYMNOSOMATOUS PTEROPODA 
393 
nisms were straight, translucent, truncatedanteriorly, taper- 
ing to a point posteriorly. Size: 8to 28 mm. Thebodywas 
ca. one fourth the width of the total length. 
Hood:—The head is bilobed (fig. l,)mouth terminal, verti¬ 
cal. The anterior part of the head is sometimes pointed but 
Fig. 1 —Drawing fromlife of Clione kincaidi{sp. nov.,) dorsal view. X 5. (For detal 
explanation, see text.) 
often invaginated in the middle (fig. 2,) and then forming 
two lobes. The entire head is about one sixth the length of 
the body and bears one pair of tentacles antero-dorsally. 
The lips are provided laterally with two pairs of tentacles of 
the same size as the dorsal tentacles. The labial tentacles 
are everywhere, regularly, studded with small warts which 
seem to be composed of fine, short bristles, set closely toge- 
ANN. DES SG- NAT. ZOOL., 10® série. 1923. VI, 2C) 
