NO. 1713. NEW CEPHAL0P0D8 FROM PACIFIC OCEAN— BERRY. 



409 



Fins very large, semicircular, placed somewhat posteriorly. 



Head large and broad. Arms short and stout. Tentacles stout; 

 club not expanded, but armed with a great number of very minute 

 suckers. 



Gladius none. 



Ty])e of the genus. — The following species: 



STEPHANOTEUTHIS HAWAIIENSIS, new species. 



Body of moderate size, sepioliform, very firm and solid, divided 

 posteriorly by a short horizontal groove, so that the dorsal portion 

 projects backward over the ventral as though the two halves were 

 slid upon one another. 



Mantle thick and fleshy, its anterior margin free all round and only 

 connected with the head in the nuchal region by 

 the merest rudiment of a cartilaginous articula- 

 tion, comprising a narrow, inconspicuous, longi- 

 tudinal ridge on the inner surface of the mantle 

 and a corresponding groove or depression on the 

 neck, without thickenings or raised edges; inner 

 ventral surface articulated with the base of the 

 funnel on either side by a long, prominent ridge 

 and a corresponding heavy locking apparatus, 

 consisting of a deep curved groove with thick- 

 ened edges; anterior ventral margin of mantle 

 produced forward beneath and past the eyes so 

 as to conceal the funnel and the entire ventral 

 surface of the head. 



Fins very large in proportion to bodj^ ; circular ; 

 attached somewhat posteriorly and considerably 

 above the median horizontal plane. 



Head large, slightly broader than the body, 

 with large prominent eyes. Siphon rather large, 

 obtusely conical; tip roimded, without any down- 

 ward flexure. 



Arms very short, the dorsal pair the longest, 

 the third pair shortest, connected at the base by a short fleshy 

 umbrella, wliich is lacking between the ventral pair; tips of the four 

 dorsal arms recurved. Suckers small, pedunculated, in two rows, 

 extending nearly to the tips of all the arms save the second pair 

 where they become obsolete for much of the distal portion. 



Tentacles stout, slightly tapering, with a flattened inner surface; 

 tentacular club small, of less diameter than the stalk, and of a vel- 

 vety appearance, owing to the great multitude of very minute suckers 

 with wliich it is armed. 



Fig. 2.— STEPHANOTEUTHIS 



HAWAIIENSIS. Lateral 



ASPECT. (Xll) 



