356 BONES OF LOPHIUS PISCATORIUS — MORROW. 
posteriorly, their anterior faces lying against the posterior edge of 
their anterior neural spine, while their superior extremities rise 
above their posterior neural spine. The first ray of the second 
dorsal is supported by the superior posterior extremity of the first 
interneural spine, and the anterior face or angle of the second, and 
so on until the twelfth, which is sustained by the posterior extre- 
mity of the twelfth interneural spine, slightly in advance of the 
posterior extremity of the twenty-fourth centrum ; this last in- 
terneural spine is attached by its posterior extremity to the neural * 
spine of the twenty-fourth centrum. The fin rays of the second 
dorsal, increase in length from the first to the sixth, and then 
decrease to the twelfth ray. 
71. The caudal fin contains eight soft rays, the centre two of 
which are the longest, and about of equal length; the upper and 
lower rays, also of about equal length, are the shortest, and the 
fin when spread, presents at its posterior extremity a rounded 
outline. The two divisions of the upper ray on their superior | 
edges, as well as those of the lower ray on their inferior edges, 
unite, and form each an angular edge, but that of the upper ray 
is much the stronger. 
83. The anal fin and interhemal spines. 
79. The interhzemal spines of the anal fin, are ten in number ; 
the first lies between the fifteenth and sixteenth, and the last 
two or ninth and tenth, between the twenty-third and twenty- 
fourth heemal spines, that is both on the twenty-fourth centrum. 
The fish described has eleven anal rays, the first of which articu- 
lates with the anterior edge or angle of the first interhemal 
spine ; the second with the anterior angle of the second inter- 
heemal, and is also supported by the posterior extremity of the 
first, and thus they continue to the tenth ; the eleventh fin ray is 
attached to the posterior extremity of the tenth interhemal 
spine, immediately beneath the centre of the twenty-fifth cen- 
trum. The rays of the anal fin increase in length to, and in- 
cluding the seventh, and decrease slightly to the eleventh. In 
most specimens, the Lophius presents in the anal fin only ten 
rays; in these the first interhemal spine may be inserted between 
the fourteenth and fifteenth, or between the fifteenth and six- 
