EXPLANATION OF PLATES. 



Except where otherwise stated in the context, all the drawings were prepared by 

 Miss Lora Woodhead, of Stanford University. The photographs were made by J. H. 

 Paine. 



The numbers in brackets have reference to the author's register of examined 



specimens. 



Plate XLV. 



Polypus marmoratus, dorsal view oflarge male from Honolulu, XJ-i; [174]- Drawn by R. L. Hudson. 



Plate XLV I. 



Fig. 1. Polypus ornatus, dorsal view of a medium sized male from Honolulu, [179]. XJ^. 

 Fig. 2. Polypus ornatus, tip of hectocotylized arm of same specimen [179]; as yet not well 

 developed, X12. 



Plate XLVII. 



Fig. 1. Polypus hoylei, ventral view of male, type, XH'i [166]. Drawn by R. L. Hudson. 



Fig. 2. Scceurgus palagiatus , dorso-lateral view of male (type), X t}4; [204]. Drawn by R. L. Hudson. 



Fig. 3. Scteurgus palagiatus, tip of hectocotylized arm of same specimen, X2K; [204]- Drawn by 



R. L. Hudson. 



Plate XL VIII. 



Fig. 1. Scmurgus palagiatus, hectocotylized portion of left third arm of male (type), X7; [204]. 



Fig. 2. Polypus hoylei, hectocotylized portion of right third arm of male (type), X4; [166]. 



Fig. 3. Polypus hoylei, region surrounding right eye of same specimen, showing the supraocular 

 cirri, considerably enlarged; [166]. 



Fig. 4. Polypus hoylei, funnel of male from the vicinity of Kauai, laid open along the medio- ventra 

 line to show the funnel organ, X2X; [176]- 



Fig. 5. Argonauta bbttgeri, inner aspect of left second arm of female, Y.2yi; [165]. 



Fig. 6. Polypus marmoratus , hectocotylized portion of right third arm of large male from Honolulu, 



X7; [174]. 



Fig. 7. Polypus p, left dorsal arm of small specimen from off the south coast of Oahu, X5; [194]- 

 Fig. 8. Polypus /?, dorsal view of specimen from off the south coast of Oahu, considerably enlarged ; 

 [195]- 



Plate XLIX. 



Fig. 1. LtBtmoteulhis lugubris, lateral view of mandibles of specimen from the Pailolo Channel, nearly 

 natural size; [212]. Drawn by J. H. Paine. 



Fig. 2. L<xtmoteuthis lugubris, apical view of same, same scale. Drawn by J. H. Paine. 



Fig. 3. Tremodopus violaceus, inner aspect of all arms of left side of female not quite adult, X3 ; [221]. 



Fig. 4. Tremodopus violaceus, funnel of same specimen laid open along medio-ventral line, X4; 

 [221]. 



Fig. 5. Euprymna scolopes, left tentacle club of male (type), inner aspect, greatly enlarged; [320]. 



Fig. 6. Euprymna scolopes, outer aspect of left dorsal arm of male (cotype) showing hectocotylization, 

 much enlarged; [323]. The suckers of the innermost row along the basal portion of the arm are con- 

 siderably larger than they should be in the figure. 

 360 



