PLATE 2 



EXPLANATION OF FIGURES 



27 Left lateral view of a wax reconstruction of the caudal portion of the 

 left suprapericardial body of a 'pup' 21 cm. long. X 90. 



28 Ventral view of a cleared specimen of the left suprapericardial body of a 

 newborn Acanthias 23.5 cm. long, showing the gland tubules and blood vessels; 

 eosin. X 30. 



29 Ventral view of a cleared specimen of the head and pharynx of a 'pup' 

 21 cm. long, showing the suprapericardial body in situ. X 2{. M., mouth; 

 V.b.w., ventral body-wall; Cb.c, cardiobranchial (basibranchial) cartilage; M.cb., 

 musculuscorcoabranchialis; L.s.b., left suprapericardial body; V arch, fifth arch; 

 P., pericardium; P.g., pectoral girdle; 77 to VI, second to sixth gill-pouches; 

 Oes., oesophagus. 



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