CEPHAIyOPODA OF THE HAWAIIAN ISLANDS. 
351 
Sessile arms very slender and delicate; the third pair much the longest, the second pair next in 
length, and the dorsal and ventral pairs very minute. Suckers small, but not in relation to the size of 
the arms; biserial; umbrella and swimming membranes absent. 
Tentacles decollated; the stumps heavy, fleshy, brittle, without traces of suckers. 
Measurements op Helicocranchia Species? 
mm. 
Length of mantle, dorsal 36 
Width of mantle ii ? 
Extreme length of fins 4 
Length of fins at base 2 
Width across fins 7 
mm. 
Length of dorsal arm 4 
Second arm 9 
Third arm 11 
Ventral arm 4 
Funnel along raedio-ventral line 9. 5 
The specimen is minus the major portion of both tentacles, the eyes and arms have become detached 
(although preserved in the bottle), and the remaining portions otherwise mutilated, so that it does not 
seem wise to attempt to attach any specific name, although a new species is undoubtedly represented. 
The great resemblance in general form to Helicocranchia pfefferi as described and figured by Miss Massy 
(1909, p. 34) is such that I have little hesitation in assuming that the present specimen is referable to 
the same genus, although the more broadly attached fins, lack of suckers on the stumps of the tentacles, 
and various minor details indicate that at any rate the two are not conspecific. If this identification 
be correct, the genus is now reported for the first time from the Pacific-, the type species being known 
only from a single specimen dredged off the coast of Ireland. Were it not for the immense funnel the 
aspect would be almost that of an Owenia. The accompanying drawing is veiy^ unsatisfactory because 
of the difficulty and uncertainty pursuant to any endeavors to straighten out the wrinkled mantle 
and reconstruct fragmentary parts, but it seems worth while to offer it for whatever it may be worth. 
The mantle is probably not represented as sufficiently elongate, and the arms are considerably too short 
and stout. 
LARVAE OEGOPSID. 
An undetermined larval oegopsid of minute size is in the collection from Albatross .station 3803, from 
a depth of 50 fathoms, between the Erben Bank and Kaiwi Channel [S. S. B. 387]. 
