HOYLE : REPORTS ON THE CEPHALOPODA. 



25 



Fig. C. Euprymna 



stenodactijla . 

 Modified suckers of 



left dorsal arm. 



X8. 



and those of the ventral row are again a little larger than those of the dorsal in 



the middle of the arm; the first left arm is a very little shorter than its fellow 



and decidedly thicker ; the suckers are first in two and afterwards in four 



rows, and extend about halfway up the arm, where they 



are succeeded by a number of stout papillae in two or three 



rows (Fig. C) ; these thicken towards the tip, and do not 



bear suckers, but each has in its rounded top a slit, much 



resembling a mouth, closed by two lips, one thicker 



than the other ; they diminish rapidly towards the tip of 



the arm. The modified papillae about halfway up figured 



by Appelldf ('86, Plate 2, Fig. 16), in Inioteuthis morsei 



were not seen, though there were two stalks from which 



suckers had fallen in this position. In the second arms the 



suckers of the outer rows are a little larger than those of 



the inner. In the third pair not only are the two outer 



rows enlarged, but four or five in the ventral row are much larger than the 



rest (Fig. D). In the fourth pair the outer rows are again 



somewhat larger than the inner, and there are two or 



three suckers of the doreal series and four or five in the 



ventral much enlarged, though not to so great an extent as 



in the third pair. The web between the third and fourth 



arms extends up about one-fourth of their lengtli ; it is 



very small between the other pairs of arms and absent 



between the ventral pair. 



The Tentacles are about as long as the arms ; there is a 

 groove in the inner aspect of their stem, the dorsal margin 

 of which is elevated into a kind of web or deep keel 

 towards the club, which bends round in a hook; it is 

 slightly expanded and of a velvety appearance, owing to 

 the numerous small suckers. 



The Color is yellowish gray, with A'ery conspicuous chromatophores, espe- 

 cially large on tlie back of tlie head and the arms. In the latter there is a row 

 of transversely elongated oval chromatophores up the outer surface, as figured 

 by Grant, and a small round one on the pedicle of each sucker of the two outer 

 rows. There is also a row of transversely placed oval ones on the outer side 

 of the tentacular stem. 



Dimensions of H. 11^. 



mm. 



Length, total 33 



End of body to mantle-margin 11.6 



Breadth of body 12 



Breadth of head 12 



Breadtli of nuchal ligament 8 



Centre of eye to edge of umbrella, between second and third arms . 8 



Length of fin 7 



Breadth across both fins 21 



Fig. D. Eitpri/inna 



sienodactijhi. 



Third rigiit arm. 



X2i. 



