W. E. HOYLE—REPORT ON THE CEPHALOPODA. 35 
Reports on the MartnE Bronocy of the SupANESE Rep Sea.—VI. On the 
CePHALOPoDA. By Wiixtam EB. Hovis, M.A., D.Sc. (Communicated 
by Prof. W. A. Herpmay, F.R.S., P.L.S.) 
[Read 20th June, 1907. | 
THE present collection is too small to be the basis of any generalisations 
regarding the Cephalopod fauna of the Red Sea ; so far as it goes, however, 
it points to a resemblance between the various divisions of the Indian Ocean. 
Of the nine species which it contains four (possibly five) also occur in the 
waters around Ceylon and three at Zanzibar. A few specimens collected by 
Mr. Crossland at the Cape Verde Islands are also included. 
The most interesting point, however, is the occurrence in the collection of 
a complete specimen of Sepia lefebrei, which has hitherto only been known 
from a single shell, described and figured seventy years ago by d’Orbigny. 
List of Species. 
1. Polypus vulgaris. 6. Polypus horsti. 
2. Polypus sp. 7. Sepia lefebrer. 
3. Polypus granulatus. 8. Sepia rourt. 
4. Polypus macropus. 9. Septa singalensis. 
5. Polypus horridus. 
POoLyPus VULGARIS (Lamarck). 
Octopus vulgaris, Lamarck, 1799, p. 18; Ferussac & d’Orbigny, 1835, p. 26, pls. 2, 3 bis, 
pl. 8. figs. 1, 2, pls. 11-15, pl. 29. fig. 6; Jatta, 1896, p. 212, pl. 4. fig. 1, pl. 7. fig. 9, pl. 8. 
fig. 6, pl. 22. figs. 2-10, pl. 28. figs. 1-4. 
Localities. —Shore near Sal Rei, Boa Vista, Cape Verde Is.; two specimens, 
3 [1436, 1437]. 
Various localities, St. Vincent, Cape Verde Is.; five specimens, 1 J [1439], 
49 [1440-1443]. 
Previous records.—Cosmopolitan. 
The position of the enlarged suckers on the lateral arms of the males shows 
some variations, which are worthy of note in regard to the value of this 
character for diagnostic purposes. 
Specimen. Arm. Position. Remarks. 
WASG eyo) 2 be 8th, 9th. The enlargement is not very marked ; the 9th 
is followed by a small sucker in the middle 
line, after which is the usual double series. 
3 R. 11th, 12th. ' Enlargement considerable, followed by a 
sudden diminution, as though the arm had 
been amputated and grown again. 
21. 11th, 12th. Followed by a gradual diminution. 
3 L. 12th. Somewhat enlarged, the llth and everal 
others have apparently been bitten out 
and are being reproduced. 
