698 LÖNNBERG, TWO CEPHALOPODS FROM TENERIFFE. 



The siphon is rather long and reaches nearly to the de- 

 pression between the ventral arms. 



The head is decidedly narrower than the body and the 

 eyes are prominent. The arms are nearly subequal, the order 

 of lenyth being 4, 1, 2 = 3. They are triangulär in section 

 and taper gradually to fine points, the dorsal pair being con- 

 spicuously more slender than the others. The fourth pair of 

 arms are considerably crested, especially on the proximal parts. 

 The length of the longest pair of arms is not much less than 

 half the palüal length. The suckers are in four series in all 

 the arms. These series are very distinct in the three lower 

 pairs of arms, less so in the dorsal, although the rows can be 

 distinguished even there. The suckers are small (about 1 mm.) 

 subequal, rather shortly pedunculated, and situated in grooves 

 surrounded by dermal folds on the inner surface of the arms. 

 The surface of the suckers is provided with meridional grooves. 

 The »horny» rings are smooth — that is, not denticulated — 

 but with uneven inner margins, and surrounded by a papillary 

 area. The umbrella between the arms is very little developed, 

 widest between the fourth and third, wider between the third 

 and second, and between the first pair, than between the first 

 and second. The buccal membrane has five points, but does 

 not carry suckers, and forms ventrally a cushion for the sperma- 

 tophores, the specimen being a female. The outer lips are finely 

 and longitudinally grooved; the inner papillate. 



The tentacles are of the same length as head and body 

 taken together. The club is slightly expanded (3 mm. broad) 

 with a protective membrane (2 mm. in width). Its length is 15 

 mm. The suckers are placed in 5 series, subequal in size, except 

 that the middle ones are a little larger, especially 6 or 7 of the 

 middle series (about 1 mm. in diameter). The »horny» arraature 

 is like that of the brachial cups, but the peduncles are longer. 

 — The colour of the upper parts in the preserved specimen is 

 reddish violet, the fins being paler. The ventral surface is 

 paler too but is provided with densely scattered chroraatophores 



