1916.| A. Ll. MAssy: Cephalopoda of the Indian Museum. 203 
wrinkles being present. Ocular cirri not apparent. Colour buff 
with numerous minute dark chromatophores which are equally 
small, but much fewer, ventrally. This approaches P. rugosus 
more than any other species in the collection, but the eye, 
in the examples which have been referred in the present list to 
that species is lower in regard to the position of the siphon than 
it isin M °9°*, and this would seem to be a character less depen- 
dent on modes of preservation than such differences as the elongate 
shape of the body and the absence of ocular cirri. 
The principal measurements are appended :— 
Imm, 
End of body to mantle-margin Ae LO 
teva Ghee e Ve ee Apes 
Eye to umbrella ne ABC 
Breadth of body eat 12 
” ,, head og ae ait: ele 
ist right arm ere ete) 
Didier a het es ae Le we AG 
3rd Gg : ae AT 
Athi ate a mutilated. 
Ist left arm A > ae 
DANG! ga ~ e 356 AS 
cigs Crneeene en 150 
Atiienpises mutilated. 
Length of funnel = 6 
Diameter of largest sucker Pitan? 
Eledonella diaphana (Hoyle). 
Fapetella diaphana, Hoyle, Diagnoses, 1, p. 232; Prelim. Rep., I, p. 
108 (1885); Aledonella diaphana, Hoyle, ‘Challenger’ Rep., XVI 
(Cephlopoda), pp. 187-8, pl. 9, figs. 3-6 (1886); Bull. Mus. Comp. 
Zool., XLII, No. 1, p. 22, pl. 5, fig. 11 (1904) ; Joubin, Res. Camp. 
Sct. Monaco, XVII, pp. 37 39, pl. 2, figs. 5-7 (1901); C. R. Acad. 
Paris, XXXVI, p. 101 (1903). 
M +451 ‘Investigator ’ station 315 : 12-iv-1903, S. of Andaman Islands, 
10° 6' N., 92° 29’ E., 705 fathoms—One. 
Specimen M +*"* agrees closely with Hoyle’s description of the 
type and it is interesting to note that some of the suckers have a 
circular opening and others the quadrangular or triangular form 
which Hoyle thought was probably due to shrinking. The siphon 
extends two-thirds of the distance to the umbrella margin and its 
organ isa A-shaped pad. The third arms are nearly as long as 
the mantle. Colour pale with red-brown spots. 
Specimen M +*°* differs a little from the type but agrees very 
closely with the illustrations and measurements of an almost 
similar sized specimen referred by Joubin (1901) to this species. 
The arms and siphon are shorter and the umbrella higher than in 
the type. The latter is highest between the dorsal arms, extend- 
ing to two-thirds of their length, and attains about half the length 
of the other arms. The mantle extends 6 mm. below and 7 mm. 
at either side of the visceral sac. About eighteen suckers are 
