REVIEW OF HIPPOCAMPUS — GINSBURG 



581 



and pointed in smaller fish. This is the invariable rule in all the spe- 

 cies examined (except possibly obfusus and hildebrandi for which no 



Figure 69. — Hippocavipus hitdcbrandt, drawn from a male 49 mm long; U.S.N.M. no. 82039. Length of 

 specimen as drawn, 35 mm. Note the very rudimentary tubercles in a male of this size, although in other 

 species the tubercles are well developed in such small specimens. A smaller female, 46 mm long, U.S.N.M . 

 no. 82037, has the tubercles better developed but stumpy, essentially as in figure 68. 



series of specimens in graduated sizes are available), and is also true of 

 ingens. The smallest available specimen of ingens is 1 1 3 mm long and 

 the largest 201 mm. The tubercles in ingens are notably better devel- 



