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with that. The two have approxunately the same number of seg- 

 ments and fin rays (compare with table 1). Hence, it may be sug- 

 gested that hildehrandi represents the young of ingens, but it is evident 



FiouKE b^.— Hippocampus hUdebrandl, drawn from the type, a female 68 mm long from the Pacific coast of 

 Panama; U.S.N. M. no. 8203C. Length of specimen as drawn, 39 mm. 



that such is not the case, although I did not have specunens of the 

 same size m both species for comparison. In the species of Hippo- 

 campus examined by me, the tubercles are notably better developed 



