204 Records of the Indian Museum. [Vox. XII, 
extending about one-fifth of the length or the arms, and with in- 
dications showing that it was continued on their outer margins ; 
funnel long, conical, and adherent for two-thirds of its length ; 
funnel organ in bad condition in both specimens ; surface smooth, 
except for a few small tubercles, chiefly on the dorsal surface of 
the mantle, head and umbrella ; no cirri; colour brownish above, 
paler below; dorsal surface with very many minute dark chro- 
matophores, which are fewer, and of a reddish-brown colour, ven- 
trally. These seem to agree with Brock’s description very closely, 
except that he describes the umbrella in his specimen to be highest 
ventrally, and prolonged in a well developed swimming membrane 
to the points of the arms. In the largest of the present specimens 
the umbrella is slightly highest dorsally, and in the other example 
it is about equally developed all round. Brock remarks that this 
species ‘‘ is excellently characterized by the long spindle-shaped 
body, which is completely like a Loligo without fins’’, and that no 
species already described resembles it. 
An example of Cisiopus indicus, Gray, in the British Museum, 
bears, however, a strong superficial resemblance in colour and 
form, but possesses arms seven or eight times the length of the 
body, and an umbrella about one-eighth of the arms. As, however, 
a careful examination fails to reveal any trace of pouches between 
the arms in the present specimens, I have no doubt that they 
belong to the form described by Brock. Steenstrup is very doubt- 
ful whether d’Orbigny’s two figures of Cistopus indicus represent 
the same species. ‘‘ He is disposed to regard the type of Rapp’s 
‘““ species as having been a true Octopus and for the form with 
‘“ pouches between the arms he has adopted the name Czstopus 
bursarius’’ (Hoyle 1886a., p. 19). It seems, therefore, possible 
that Brock’s form may be identical with the type of Rapp’s 
species. 
The principal measurements of the present examples are ap- 
pended :— 
Specimen number ... ae .. M 52382 M 8288 
mm. mm. 
End of body to mantle-margin Pe 43 43 
Vee eet eve ne ae 67 60 
Eye to umbrella at left side on ae 50 30 
ar ay jue atte m a 35 30 
3readth of body __... er aes 24 21 
head s se 22 10 
if ae C Kae ine 15 9 
Ist right arm a an 200 155 
OIG Pen st bey ae vas 185 143 
3rd 3,5 ef a a 128 156 
Athos. 4 55 oe - a 135 143 
ist left arm a ae, ask 162 151 
PHNG| ope > op i ore Fe 107 160 
PLAC L pe Ae ee Fr 135 137 
4th ,, 5, s0 “ss at: 125 110 
Length of funnel... x pet 22 16 
Diameter of largest sucker she see 0 3 
Distribution.—Amboina, a male presented by the natives. 
