LiiOoriUon> 



59 



above. The figure shows a photograph of the egg mass with the 

 fish around it, (not in situ). 



Visceral anatomy: The abdominal cavity is long, slender and 

 compressed, corresponding to the general shape of the fish. The 

 alimentary canal is peculiar in being perfectly straight from mouth 

 to vent, a condition not found in any other blennies examined. Three 

 divisions, fore, mid and hind-gut are made evident by constrictions 

 as shown in the figures, but no differentiated stomach, and no caeca 

 are found. The gonads of each sex are apparently single, as shown. 

 Lying along the alimentary canal are two characteristic, elongate 

 bodies (v) which are apparent in all of our specimens, and which 

 appear to be definite organs, but a histological examination shows 



30 



31 



Figures 30 and 31. Xiphidion rupestre 



Fig. 30, Ventral view of viscera entire. Fig. 31, Same, with organs separated. 

 A, Liver. B, Spleen. C, Pyloric caeca. D, Urogenital organs. E, Pyloris. 



