Fishes of the Western North Atlantic 



553 



Figure 124. Harriotta rahighana, juvenile male, about 485 mm long to upper origin of caudal, from off Vir- 

 ginia, 781 fathoms (U. S. Nat. Mus., No. 38200). A Side view of head, to larger scale, to show mucous canals, 

 about 0.7 X . B Ventral view of same, about 0.7 X. C Region enclosed in anterior loop of angular mucous canal 

 to show distribution of mucous pores, about natural size. D Left-hand gill opening with anterior margin rolled 

 forward, about 1.7 X. E Side view of terminal part of dorsal spine, about 2.6 X. F Upper dental plate (right) 

 and lower dental plate (left), about 1.3 X. 



Chimaera; junction of cranial canal with aural canal about a right angle; cranial canal 

 of each side wavy over eye, thence nearly straight to tip of snout; suborbital canals also 

 wavy close in front of eye, but straight thence forward; jugular canal and oral canal 

 arising either jointly from orbital canal (Fig. 125 A), or separately, with a short inter- 

 space; angular (maxillary) canal joining suborbital about V3 of distance from level of 

 front of eye toward tip of snout; anterior part of suborbital canals and angulars with 

 their interconnecting loop marked by series of rounded openings. Skin on lower side 

 of snout with numerous conspicuous mucous pores in region of angular (maxillary) 

 canal-loop. 



Head about -/s (43 %) of total length of trunk to lower origin of caudal fin. 



