222 Mr. W. E. Hoyle on the 



and vents on the inner side of the cup among the granulations. 

 Wall almost entirely composed of short-jointed keratose fibre 

 of a sponge-yellow colour, in which there is very little sand, 

 and that chiefly towards the surface, while there is a great 

 deal outside the fibre in the adjoining sarcode. Size of speci- 

 men 6 in. across the brim, 1 in. deep in the centre, \ in. 

 through the wall in the centre, diminishing towards the 

 circumference. 



Hab. Marine. 



Loc. Port Phillip Heads, South Australia. Depth ? 



Obs. The pores being in the dermal incrustation outside, 

 while the vents are immediately opposite, in the dermal 

 incrustation of the cup inside, causes the wall, when the 

 incrustations on both sides are washed off, to present a sieve- 

 like structure. 



[To be continued.] 



XIX. — Diagnoses of new Species of Cephalopoda collected 

 during the Cruise of H. M.S. ' Challenger. 1 — Part I. The 

 Octopoda. By William E. Hoyle, M.A. (Oxon),M.R.C.S., 

 F.R.S.E., Naturalist to the ' Challenger ' Commission. 



[Published by permission of tbe Lords Commissioners of II. M. Treasury.] 



Octopus, Lamarck. 

 Octopus verrucosus, n. sp. 



The Body is rounded, but so distorted by compression that 

 no further details can be given. The mantle-opening extends 

 fully halfway round the body, terminating a little below and 

 behind the eye. The siphon is long, evenly conical, and 

 pointed, and extends nearly halfway to the umbrella-margin. 



The Head is short, not so broad as the body, and with eyes 

 but slightly prominent. 



The Arms are unequal in length, the second pair being 

 considerably the longest, and almost six times as long as 

 the body ; they are comparatively stout and taper gradually. 

 The umbrella, extends about one fifth up the longest arms. 

 The suckers are fairly close, deeply cupped and marked with 

 radial grooves, between which are numerous very minute 

 papillae. About four suckers on each lateral arm opposite the 

 umbrella-margin are larger than the others ; beyond these 

 they gradually diminish. The hectocotylus is present in both 



