the Ccelacanih Fish. 



321 



wliich is, in my opinion, one of tlie most important contribu- 

 tions ever made to fish morpliology. I find, to my great 

 pleasure, that Dr. Stensio lias been able to describe in the 

 new genus Wimania nearly all the structures which occur 

 in Macropoina, and that his interpretation is in nearly all 

 points in complete agreement with that which I had 

 reached. 



In some respects, however, my material is more complete 

 than his, and I therefore give an account of the head of 

 Macropoma as an introduction to a discussion of the relation- 

 ships of the group to which it belongs. 



Fi.-. 1. 



r''^-' jj-Lx.Oc 



Macropojna mantelli, Ag. Lateral view of the skull, with the dermal 

 bones and pterygoidal apparatus of the left side removed. X 1. 



EcPt., ectopterj'goid ; Ex.Oc, exoccipital; Op.Pr., foramen probably 

 for the opthalmicus profundus nerve; P.V., "prevomer" and 

 its tooth-plate; Pal., palatine tooth-plate; Par.Sp., ])ara- 

 spheuoid ; Pr.Ot., prootic ; Pt., pterygoid ; Qu., quadrate ; 

 III., foramen for third or sixth cranial nerve ; IV., foramen for 

 fourth cranial nerve (?). 



Basioccipilal. — The basioccipital is a small very thin bone, 

 with nearly flat dorsal and ventral surface.*, which are square. 

 It only ossified in full-grown individuals. Its anterior and 



Ann. (Sc Mag. N. Hist. Ser. 9. Vol. viii. 21 



