60 CLASSIFICATION OF THE ANIMAL KINGDOM. 



Fam. c. Pallenidse. Pallene. 



Fam. d. Phoxichilidse. Pycnogonum, Phoxichilus. 



(Hoek, Report on the Pycnogonida, Report of the Scientific Results of 

 the Exploring Voyage of H.M.S. Challenger, vol. iii., 1881 ; Dohrn, 

 Neite Untersuchungen iiber Pycnogoniden, Mitth. Zool. Stat. Neapel., i. 

 1879.) 



Fig. 55. Pantopoda. Nymphon abyssorum, slightly enlarged. 

 (After Sir Wyville Thomson.) 



ORDER II. ACARINA (MONOMEROSOMATA). 



Sub-ord. 1. Pentastomida (Linguatulina). 

 Fam. Pentastomidse. Pentastoma. 



Sub-ord. 2. Tardigrada (Bear-animalcules). 

 Fam. Macrobiotidse. Macrdbiotus, Emydium. 



