Fig. 221.— Thoracic feet 

 of ScMzopoda (after G. 0. 

 Sars). A and B, Lophogas- 

 ter typicus. A, 1st thoracic 

 foot (maxillipede) ; B, 2d 

 thoracic foot of the ? , with 

 hrood-lamella. C-E, Mysls 

 flexuosa. C, 1st thoracic 

 foot (maxillipede) ; D, 2d 

 thoracic foot (maxillipede); 

 E, 3d thoracic foot. F-I, 

 Thysanoessa gregaria. F, 

 1st, G, 5th, H, 7th, I, Sth 

 thoracic feet. I, II, Joints 

 of theprotopodite, 1-5, of the 

 endopodite ; en., endopodite ; 

 ex', exopodite ; br, gills ; ep, 

 epipodial plate ; irl, hrood- 

 lamella ; Jc, masticatory 

 ridge. 



Cap-shaped ophthalmic lobe without eye (without pigment or visual apparatus) ; ai, a-2i anterior 

 and posterior antennse ; mdt, mandibular feeler ; mx, maxillse ; &i, 1st thoracic foot with exopodite 

 (ex) and epipodite (ep), the latter in the uncovered branchial cavity hi, brood lamellse of the 

 2d-8th removed thoracic feet ; dbi, 1st abdominal segment ; otli, cephalo-thorax. 



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