Natural Science, vol. vii. 



[Plate XIV. 



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Arthropods and Molluscs. 

 Fig. I. Oorhynchus aticklandice , Hoek ; a Pycnogonid ; 700 fms. x jh. 

 Fig. 2. Halobates wiillerstorffi, Frauenf. ; pelagic hemipteron, male and 

 female. Fig. 3. Bathydoris abyssoruin, Bergh ; showing the five branchial 

 tufts, one probably lost from the right side ; near branchiae on right is the 

 renal pore ; below, in the middle line, is the anal papilla ; at the bottom is 

 the expanded foot ; nat. size. 



