1912.] 



NATURAL SCIENCES OF PHILADELPHIA. 



435 



Measurements. 



Author's register number [286] 



mm. 



Length, total 393 



Length, exclusive of tentacles 310 



Length of mantle, dorsal 168 



Width of mantle, median 50 16 



Width across fins Ill 



Length of fins, total 78 



Length of fins along plane of attach- 

 ment 72 



Length of head 37 



Width of head 33 



Length of right dorsal arm :. 101 



Length of right second arm 113 



Length of right third arm Ill 



Length of right ventral arm 90 



Length of right tentacle, total 205 



Length of right tentacle, sucker-bear- 

 ing portion 125 



Length of left tentacle, total 202 



Length of left tentacle, sucker-bear- 

 ing portion 123 



Author's register number [257] 



mm. 



Length, total 301 



Length, exclusive of tentacles 253 



Length of mantle, dorsal 155 



Width of mantle, median 31 



Width across fins 81 



Length of fins, total 64 



Length of fins along plane of attach- 

 ment 59 



Length of head 21 



Width of head 21 



Length of right dorsal arm 66 



Length of right second arm 78 



Length of right third arm 75 



Length of riglmfc ventral arm 60 



Length of right tentacle, total 126 



Length of right tentacle, sucker-bear- 

 ing portion 83 



Length of left tentacle, total 123 



Length of left tentacle, sucker-bear- 

 ing portion 81 



[258] 

 mm. 



332 



263 



164 

 28 

 80 

 66* 



62 

 23 

 22 

 67 

 74 

 68 

 63 

 135 



81 

 152 



90 



[257] 

 mm. 



292 

 256 

 161 



42 16 



84 

 69 



63 

 22 



31 16 

 66 

 77 

 77 

 66 

 111 



71 

 111 



71 



[257] 

 mm. 



329 

 277 



159 



42 i6 



95 



67 



58 

 24 

 26 

 79 

 97 

 91 

 71 

 149 



91 

 138 



86 



[257] 

 mm. 



279 



250 



156 



34 



77 

 66 



59 

 25 

 22 

 62 

 75 

 70 

 60 

 106 



67 

 106 



68 



[257] 

 mm. 



316 



279 



170 



35 



87 



67 



62 

 24 

 32 



72 

 85 

 85 

 67 

 118 



74 



120 



78 



[273] 

 mm. 



83 



73 



45 



10 16 



19 



12 



11. 

 8 

 10 

 17 

 19 

 18 

 14 

 31 



17 

 27 



14 



Badly compressed dorso-ventrally. 



