EXPLANATION OF PLATE XXXIL 



Fig. I. — Leptotrachelus serpentinus Hay. Page 419. Trunk. Type. 

 Xt- No. 45110 (3683). ant. pr., anterior transverse pro- 

 cesses of vertebrae; derm, sc, dermal scutes; op., oper- 

 culum; p. /., pectoral fin; post, pr., posterior processes of 

 vertebrae; v. f., ventral fin. 



Figs. 2 and 3. — Aipichtys formosus Hay. Page 445. Fish and its 

 counterpart, without head. Type. Xy. No. 4519 (3831). 

 a. f., anal fin; br., branchiostegals; op., operculum; p. /., 

 pectoral fin; v. /., ventral fin. 



