30 MALACOZOA. CEPHALOPODA. SEPIINA. LOLIGO, 



and much longer than the dorsal, the lateral ventral much 

 thicker and longer. They are connected at the base by very 

 short membranes. The acetabula are pedunculate, cup-shaped, 

 with a thin horny, minutely denticulate margin, and are 

 irregularly disposed in two rows — there being on each of the 

 ventral pair about two hundred, besides some very minute at 

 the tip. The two pedunculate arms are nearly two-thirds of 

 the length of the head and body, slender, at first round, then 

 compressed, ultimately clavato-lanceolate, with numerous ir- 

 regular cup-shaped, pedunculate acetabula, like those on the 

 other arms. Surrounding the mouth are two pyramidal pro- 

 minences on each side, a lower prominence behind, and two 

 ridges before. The lip is radiatingly rugose ; the mandibles 



brown, at the tip black. 



Inch. Lines. 



Length from mouth to end of body 11 6 



Breadth of body anteriorly 2 9 



,, at the commencement of the fin 3 6 



„ about the middle of the fin 4 



Greatest breadth of fins 8 



Space between the fins anteriorly 2 3 



Length of dorsal arms 2 3 



,, ,, ventral arms 4 



,, ,, pedunculate arms 7 6 



,, from the mouth to the dorsal 



peak of the mantle 1 3 



,, from the mouth to the ventral 



margin 2 



The above description is that of a specimen preserved in 

 spirits, and belonging to Dr. Dyce, who obtained it from the 

 Bay of Aberdeen, in 1836. He informs me that several other 

 specimens have been in his possession. I have heard of two 

 Loligines, which other individuals had; but, as they were 

 simply esteemed to be " Cuttle-fish," I cannot say whether 

 they were of this or of other species. Pennant's figure, refer- 

 red to below, agrees remarkably well with the specimen here 

 described — differing only in having the pedunculate arms ra- 

 ther shorter. It represents the form of the body and fins much 

 more accurately than that of Delle Chiaje. 



Sepio Loligo, Linn. Syst. Nat. i. 1096. — Sepia Loligo, Penn. 

 Brit, Zool. iv. 53. PI. 27. f. 43. — Loligo vulgaris, Delle Chiaje, 

 Anim. S. Vert, di Nap. iv. 57. PI. 59. f. 2. — Loligo vulgaris, 

 Lamk. Syst. vii. 662. — Loligo vulgaris, Flem. Brit, Anim. 252. 



