REVIEW OF HIPPOCAMPUS — GINSBURG 



587 



those from Mississippi and Texas. The number of caudal segments 

 is also nearly the same, averaging slightly greater in the Campeche 

 lot, but this slight difference may disappear when more specimens 



?3S^. 



Figure 71.— Hippocampus regulus, drawn from a female 29.5 mm long from Harbor Island, Tex. Length 



of specimen as drawn, 17.5 mm. 



are examined. The presence of these two variants in a widely sep- 

 arated population emphasizes the relative homogeneity of regulus and 

 is in strong contrast to the high degree of variability shown by 



