[141] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 351 



afterwards reproduced. In such examples new suckers of various sizes, 

 from those that are very minute up to those that are but little smaller 

 than the normal ones, can often be found scattered ainoug the latter on 

 the same individual. It seems to me possible that some of the speci- 

 mens having the suckers on the tentacular arms unusually small may 

 have reproduced all those suckers, or, still more likely, the entire arm. 



I have seen specimens of this species, and also of 0. illccebrosus, which, 

 after having lost the tips, or even the distal half of one or more of the 

 sessile arms, have more or less completely reproduced the lost parts.* 

 In such cases the restored portion is often more slender and has smaller 

 suckers than the normal arms, and where the old part joins the new 

 there is often an abrupt change in size. Probably this difference would 

 wholly disappear after a longer time. 



An unquestionable and most remarkable example of the reproduction 

 of several entire arms occurs in a small specimen taken off Newport, 

 E. I., August, 1880. This has the mantle 70 mm long; dorsal arms, 

 22 mm ; 3d pair of arms, 30 mm . The three upper pairs of arms are per- 

 fectly normal, but both the tentacular and both the ventral arms have 

 evidently been entirely lost and then reproduced from the very base. 

 These four arms are now nearly perfect in form, but are scarcely half 

 their normal size on the left side, and still smaller on the right side. 

 The left tentacular arm is only 24 mm long, and very slender, but it has 

 the normal proportion of club, and the suckers, though well formed, 

 are diminutive, and those of the two median rows are scarcely larger 

 than the lateral ones, and delicately denticulated. The right tentacular 

 arm is less than half as long (12 mm ), being of about the same length as 

 the restored ventral one of the same side ; it is also very slender, and 

 its suckers very minute and soft, in four equal rows. The right ventral 

 arm is only 14 mm long ; the left one 15 mm long ; both are provided with 

 very small but otherwise normal suckers. 



In another specimen from Vineyard Sound, a female, with the mantle 

 about ISO™ 1 * long, one of the tentacular arms had lost its club, but the 

 wound had healed and a new club was in process of formation. This 

 new club is represented by a small, tapering, acute process, starting out 

 obliquely from the stump, and having a sigmoid curvature; its inner 

 surface is covered with very minute suckers. The other arms are normal. 



Eggs and young. 



The eggs are contained in many elongated, fusiform, gelatinous cap- 

 sules (Plate XXX, fig. 7) which are attached in clusters by one end to 

 sea- weeds or some other common support; from the point of attachment 

 they radiate in all directions. These clusters are often six or eight inches 

 in diameter, containing hundreds of capsules, which are mostly from two 



* Perhaps the Dosidicus Eschrichtii Steenstrtip is only an Ommastrephes or Sthenoteuthis 

 which had lost and partially reproduced the tips of all the arms. At any rate, no 

 sufficient characters have been given to distinguish it generically. 



