Fishes of the IVestern North Atlantic 



4.81 





Figure iio. Mobula hypostoma, female, 845 mm wide, from Brazil. J Anterior side of second right-hand 

 branchial arch to show general arrangement of gill plates and gill folds, about 1.7 X. B Margins of three gill 

 plates, to larger scale, showing arrangement of lateral lobes, about 5.2 X. C Lobes from same, about 13 X. 

 D Cross section of inner part of lower limb of arch about midway of its length to show shapes of plates on 

 posterior face (left-hand) as compared with those on anterior face (right-hand), about 2.5 X. 



