CEPHALOPODA OF THE HAWAIIAN ISLANDS. 



323 



the broad marginal membrane; armed with two rows of 9 to 12 hooks each, those of the ventral row in 

 the main conspicuously the larger. Fixing apparatus a compact rounded group of suckers and pads 

 in approximately equal numbers on the carpus. There is a compact cluster of minute suckers at the 

 tip of the club. 



Color in alcohol a brownish buff, mottled with slate; a very irregular dark streak on the dorsal 

 aspect marks the position of the gladius. 



Measurements of Onychoteuthis banksii. 



Totallength 3 i 5 



Tip of body to dorsal margin of mantle 



Width of mantle 



Width across fins 



Extreme length of fins 



Length of fins at plane of attachment 



Length of head 



Width across eyes 



Length of— 



Right dorsal arm 



Left dorsal arm 



150 

 33 



112 

 87 

 80 

 16 

 3° 



57 

 54 



Length of — mm. 



Right second arm 69 



Left second arm 69 



Right third arm 71 



Left third arm , 68 



Right ventral arm ." 70 



Left ventral arm 43-f. 



Right tentacle 14X 



Right tentacle club 34 



Left tentacle 125+ 



Left tentacle club 27+ 



Carpal fixing apparatus 5 



Distribution. — "Distribution nearly universal; collected in all the oceans at numerous localities, 

 equally in Arctic and tropical waters." (Tryon 1879, p. 168.) 



Neighborhood of Laysan Island (Schauinsland; Stanford University collection). 



Material examined. — But a single Hawaiian specimen of this species has been examined. This is 

 no. 2101 of the Stanford University invertebrate series and was taken off Laysan Island by Mr. Max 

 Schlimmer [S. S. B. 227]. 



Remarks. — I can not find that this Laysan Island specimen exhibits any particular differences from 

 the 0. banksii I have seen from the Atlantic and elsewhere. So far as can be determined, there appear 

 to have been n hooks in each row on the right tentacle club and more than likely on the mutilated 

 left tentacle as well. The fixing apparatus of each tentacle contains 10 suckers and an exactly equal 

 number of pads, a feature which appears to be subject to great variation in this species. 



It seems clear that the original spelling of the specific name was the result of an accidental trans- 

 position of type, so that the emended version seems preferable. O. banskii, 0. banski, O. banksii, and 

 O. banksi are abundantly appearing variants in the extensive literature. 



This is one of the species of squid preyed upon by the Laysan albatross, and has been previously 

 reported in this connection by Schauinsland. 



Genus TELEOTEUTHIS Verrill 1882. 



Onykia Lesueur 1S21. p. 98. 



Onykia Lesueur 1S22, p. 296. 



Onychia Latreille 1825 {fide Gray), not Onychia Hubner 1816. 



Teleoteuthis Verrill 18S2, p. 279. 280. 



TeUotcuthis Pfeffer 1900, p. 155, 156; 1912. p. 4... 43. 



Animals of small or very moderate dimensions. Tentacle club of young with four rows of suckers, 

 the two median of which become typically modified into hooks in the adult, but in some cases only 

 one of the median rows is noticeably modified, and one of the marginal rows is often very weakly devel- 

 oped. Gladius with broad wings as in Loligo. 



Type. — Onykia Carriboea Lesueur 182 1 (species first named); a widespread species originally 

 described from the West Indies. 



