202 



DR. W. N. F. WOODLANB ON THE 



text-fig. 57), but not to the same extent as in Syngnathus. Figure 

 38 (PI. Y.) represents a section (A-B in text-fig. 57) across the 

 anterior end of the star-shaped " red body." 



The epithelium of the gas gland is folded as in Gobius niger, 

 but, as in Syngnathus, it becomes considerably thickened by the 

 elongation and fusion of the folds in the vicinity of the rete 

 mirabile. The cells are rather small and short-columnar in form, 

 and, in the particular specimen which I examined, contained 

 numerous gas bubbles (figs. 39, 40, 41) ; in other Avords, the gland 

 -was here in a highly active condition when preser\ed. 



um 



The construction of tlie " red body " of Feristetlnts cataphrcictus. 



E., epithelium of gas gland; R.M., rete mirabile. Fig. 38 (PL V.) represents a 

 section taken across A-B. 



The most remarkable feature about the " red body " of 7^eri- 

 steihus is, of course, the radial disposition of the divisions of the rete 

 mirabile and the glandular epithelium ; in every other respect it 

 appertains to the SyngnatJms type as above defined. 



Trigla hirundo (corax Bp.). 



The bladder of Trigla hirundo, when observed from the ventral 



