2 72 • BULLETIN OK THE BUREAU OF FISHERIES. 



i'. Eye with a perforated lid. (CEgopsida.) 

 3. Suckers unmodified. 



4. Funnel articulating with the mantle by a triangular 



cartilage having a X-shaped groove. (Ommastrephidae.) 



5. Tentacle bearing suckers for more than half its length; 



fixing apparatus poorly developed Ommasirephes sagittatus, p. 29S. 



5'. Suckers extending for less than half the length of the 

 tentacle; fixing apparatus a distinct carpal group of 

 pads and suckers. 



6. Mantle fused with the funnel on at least one side Symplectoteuthis oualaniensis, p. 304. 



6'. Cartilaginous articulation free. 



7. Size moderate, arm tips normal Sthenoieuihis barframit, p. 298. 



7'. Adult very large; arm tips attenuate, with very 



minute and numerous suckers Dosidicus gigas, p. 301 . 



4'. Funnel articulating with the mantle b)- an ear-shaped 

 cartilage having a simple groove; numerous luminous 



organs present on the ventral aspect Meleagroteuthis hoylei, p. 305. 



3'. Some of the suckers modified into hooks. 



8. Sessile arms except ventral pair bearing two rows each of 



suckers and hooks Gonalusfahricii, p. 308. 



S'. Hooks present on the tentacle club alone; sessile arms 

 with two rows of suckers. 

 9. Body firm, loliginiform; cartilaginous articulation free. 

 (Onychoteuthidae.) 

 10. Animal gigantic; gladius terminating in a long solid 



cone Moroteiilhis robtisia, p. 314. 



10'. Animal small or of moderate size; point of gladius 



compressed and weak Onychoieuthis, sp., p. 312. 



9'. Body delicate; fins long and narrow; mantle margin 



fused with the body in three places Caliteuthis phyllura, p. 315. 



Phylum MOLLUSCA, Class CEPHALOPODA 



Order Dibranchiata. 



OCTOPODA. 



Family CIRROTEUTHID.^ Keferstein, i866. 



Genus CIRROTEUTHIS Eschricht, 1836. 



Cirroteuthis Eschricht, 1S36. p. 627, 

 Sciedephorus Reinhardt and Prosch, 1846, p. 165. 

 Bostrychoteuihis Agassiz, 1S46, p. 50, 87. 

 Cirroteuthis Hoyle, 18S6. p. 55. 

 Cirroteuthis Hoyle, 1904, p. 3. 



The members of diis genus are deep-sea octopods, often of large size, with a roimded or ovoid body 

 of rather gelatinous consistency and a paddle-like fin attached on either side. The web connecting the 

 arms is exceptionally developed. The suckers are placed in a single series alternating with paired 

 cirri on either side. A large saddle-shaped supporting cartilage is present in the medio-dorsal region 

 of the body. 



Type, C. MuUeri Eschricht, 1S36, a species occurring off the coast of Greenland. 



