468 Rev. Canon Norman's Revision 



inwards, and exterior to this a very large oblong laminary 

 plate. Formula 1— 1— (1 . 1 .) . 1 . (1 . 1 .)— 1— 1. 



3. Eledone cirrosa (Lamk.). 



Outer Haaf, Shetland {A.M.N), St. Andrews [M'lri- 

 toshl), Firth of Forth [McBain, Hoi/le, &c), Lamlash Bay, 

 Arran, N.B. [Herdman), Tenby (C. Jeferys !), off S.W. Ire- 

 land, H.M.S. ' Research/ 1889 (G. C. Bourne I), Aberdeen 

 and North Wales [Hoyle, in lift.), off the Butt of Lewis in 40 

 fathoms, 'Triton' exped. [Hoyle). 



Distribution. Mediterranean, West France, Denmark, 

 Sweden, West Norway, and Faroe Islands. 



The males have the arms very long and greatly attenuated 

 and they are not usually coiled up as in the female. Their 

 extremities bear elongated and thin cutaneous lobes trans- 

 versely placed and closely crowded together; the ends of 

 these project in mature specimens beyond the margin of the 

 arm like so many filaments, while in the centre of each lobe 

 is a pore which represents the rudimentary sucker. In 

 younger males these cutaneous expansions of the suckers are 

 much smaller, and do not extend beyond the sides of the arms. 

 The third right arm is hectocotylized, much shorter than the 

 left, and very deep throughout. Along its lower margin there 

 runs a fleshy lobe, which is curved upwards along the inner 

 side of the arm, so as to form a channel throughout its length, 

 and extending beyond the extremity of the arm [i. e. the por- 

 tion bearing suckers), is there folded back and united to the 

 inner side of the extremity; the termination of the channel is 

 thus at the furthest point. 



It is the Sepia octojoodia, Pennant, Octopus ventricosus, 

 Grant, and Eledone Pennantii, MacGillivray *. 



Order II. DECAPODA. 



A. Chondkophora. 



Suborder I. OPISTHARSENIA. 



Fam. 1. Sepiolidae. 



Genus 1. Rossta, Owen. 



Body short, subglobose or oblong ; anterior margin wholly 



* Herr H. J. Posselt has recently (in " Petersen, Del Videnskablige 

 Udbytte af Kanonbaaden ' Hauchs ' Togter i de Danske Have inden for 

 Skagen 1883-86 " (1889), p. 139) pointed out distinctions between the 

 males of E. Aldrovandi (Rafinesque) and of the present species. The 

 differences are very slight, and how are the females to be distinguished ? 

 No doubt Herr Posselt represents not only his own views but also those 

 of Professor Steenstrup ; and I have in deference to their opinions here 

 kept E. eiiTosa as distinct from E. Aldrovandi. 



