CEPHALOPODA OF THE HAWAIIAN ISLANDS. 



321 



In addition to the specimen above described, the Albatross collection contains three other indi- 

 viduals which are so badly macerated (as though taken from the digestive cavities of larger animals, as 

 was undoubtedly the case) that their true identity was not ascertained for a considerable length of time. 

 One of these is a male and has been made the subject of the following notes: 



Male : Third arm pair very much larger than the others, bearing two or more very greatly enlarged 

 basin-shaped suckers (pi. L, fig. 4) at their distal ends. No evidence of hectocotylization visible 

 except that the left dorsal arm is much smaller than the right and is closely united with its neighbor of 

 the second pair by a very narrow basal webbing; no true fusion of the arms on either side can be made 

 out after the fashion described for H. dispar. 



The firm adherence of the mantle and body just back of the nuchal cartilage is very clearly evident 

 in this specimen. 



The extremely desiccated condition of the specimen precludes the giving of more accurate or com- 

 plete details. 



Type. — Catalogue No. 214311, United States National Museum [S. S. B. 30]. 



Type locality. — Albatross station 3989, 733 to 385 fathoms depth, in the vicinity of the island of 

 Kauai, coral sand and rock bottom, June n, 1902; 1 9 • 



Distribution. — Vicinity of the Hawaiian Islands (Albatross). 



Specimens of Heteroteuthis hawaiiensis Examined. 



Remarks.— The only other species of this genus which are at present recognized are the H. dispar 

 (Riippell) of the Mediterranean region and H. ueberi Joubin from the Dutch East Indies, from each of 

 which H. hawaiiensis appears clearly distinct. Its nearer relationships are certainly with H. dispar, but 

 it is to be differentiated on the following grounds: 



1. Indications of the presence of a ventral shield similar to that already familiar in Necloteuthis and 

 Stoloteuthis, but much less clearly defined. 



2. The complete concealment of the funnel by the ventral lobe of the mantle. 



3. The heavy oblique folds on the under surface of the head which apparently function to secure a 

 more perfect application of the mantle margin to the head and thus serve as a secondary locking apparatus. 



4. The curious nonconformity between the dorsal and ventral halves of the body in mature females. 



5. The shorter arms. 



The adults of this species are very neat, compact little creatures of pleasing appearance, and like all 

 their near allies are probably quite brilliantly colored when living. They also possess luminous proper- 

 ties, the photogenic glands overlying the ink sac in the present species being in all respects closely 

 similar to those described for H. dispar and very conspicuous even in the macerated specimens. 



Division CEGOPSIDA (d'Orbigny 1845). 



Decapoda Oigopsida d'Orbigny 1845, p. 367. 

 Chondrophora Gray (pars) 1849. p. 36, 37- 

 (EgopsidtE Keferstein 1866, p. 1444. 

 Oigopsidce Verrill 1881, p. 427. 

 (Egopsida Hoyle 1886, p. 32. 162. 

 fEgopstdcc Pfeffer 1900, p. 151. 

 fEgopsida Chun 1910, p. 3. 

 (Egopsida Pfeffer 1912, p. I. 



Eyelids perforate over the cornea; their margins free all around and continuous except for the usual 

 presence of a notch or sinus in front. Suckers on either the sessile arms or tentacles or both frequently 



