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furnishing the museum with pelagic and other material from almost 

 every part of the ocean. Several parts of this "Plankton" have 

 since been worked upon by his pupils and others {e.g., Boas on the 

 Pteropoda, Traustedt on the Salpae, Lutken on the Dolphins and 

 the " hemi-metamorphoses of fishes," Bovallius on the Hyperidae, 

 etc.). With this series of studies may also be reckoned the memoir 

 of Steenstrup and myself on the parasitic Entomostraca of the 

 ocean with several other forms of the same tribe ; also the former's 

 anti-critical note on the genera Sllcnium, Lesteira and Pegasimallus, 

 and his papers (too numerous to be enumerated here) on Cepha- 

 lopoda (Notac teuthologicae, etc.) in the Transactions and Proceed- 

 ings of the Academy of Science, in the Vidcnskabcligc Mcddclcl- 

 scr fra den naturhistorishe Forcning, and elsewhere in popular 

 journals. I shall dwell, however, more particularly only on two 

 points. Firstly, there is his surprising demonstration that the 

 apparently abnormal development of one or occasionally two arms 

 in male cuttlefishes, hitherto overlooked or not understood, was in 

 fact the homologue of the well-known " hectocotyle " in the pelagic 

 Octopoda. His eager desire to throw the light of his genius and of 

 his science on obscure problems, led him also to investigate the tale 

 of the wonderful sea-monk, the monster that was cast ashore in our 

 vicinity in the sixteenth century, described and figured by Belon, 

 Bondelet and Gesner, and playing an important part in the semi- 

 mystic Natural History of the Benaissance. Nobody had been 

 able to decipher this enigmatical monster until Steenstrup deprived 

 it of its fabulous investment, demonstrated it to be simply a decapod 

 giant cuttlefish. Specimens of this same kind {Architeuthus) have 

 been thrown on our shore, formerly and later on the shores of Ice- 

 land, Faroe, Jutland, Newfoundland and Japan, and happily one of 

 our captains did find such an animal floating in the Atlantic, and 

 secured to Steenstrup some of its most important parts. Steen- 

 strup's full account of these remains was partly in print, though 

 never completely published ; but some of his plates have been 

 placed in the hands of his fellow-zoologists. To the other purely 

 zoological articles of Steenstrup, I shall only allude briefly, namely, 

 to those on Sphenopus (Sabclla marsiqrialis Giil), on Philichthgs, 

 Phizochilus, Xenobanalus, Pachybdclla and Pdtogaster, on the enig- 

 matical objects correctly interpreted as the " gillrakers " of Sdachus 

 maximus, on the natural systematic place of the walrus, etc. His 

 interpretation of the wandering of the eye in young flounders has 

 not been accepted with unanimity, but still has some trustworthy 

 points to fall back upon. Our common memoir on the Mola-tvihe 

 (Orthagoriscus) and its larval stages, has not been published in its 

 complete form ; perhaps it may be so still. Several palaeonto- 

 logical papers on mammals, birds and reptiles (turtles) found in our 



