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Distribution. — S. serratodentata was 

 collected from only eight stations. All 

 except three were mesoplanktonic, but 

 the largest number of specimens (73) 

 were taken from the surface. The rec- 

 ords are given in Table 6: 



SAGITTA MACROCEPHALA Fowler. 



Sagitla macrocephala Fowler (1905), p. 65. — 

 Ritter-Zahony (1911), p. 31. 



A single distorted specimen was ob- 

 tained. Its measurements follow: 



Length in mm 7.8 mm. 



Width in per cent of length 14. 4 per cent. 



Tail in per cent of length 37. 4 per cent. 



Length of posterior fin 24. 8 per cent. 



Per cent of fin in frontof tail- 

 septum 45.5 per cent. 



Width of posterior fin 7.7 per cent. 



Interval from anterior to posterior 

 fin 5. 5 per cent. 



Length of anterior fin 15. per cent. 



Width of anterior fin 2.7 per cent. 



Number of anterior teeth 7-7 



Number of posterior teeth 25-26 



Number of seizing jaws 11-11 



Ventral ganglion, corona ciliata, and 

 ovaries not observed. 



The specimen differs conspicuously 

 in width from those drawn by Fowler 

 (1905, pi. 5, fig. 16) and Ritter-Zahony 

 (1911, fig. 37). In width the Philip- 

 pine specimen measures 14.4 per cent 

 of the length, while Fowler draws it 

 7.8 per cent, and Ritter-Zahony 5 per 

 cent. However, the Philippine specimen 

 is clearly immature, neither ovaries nor 

 seminal vesicles being visible. More- 

 over, it is poorly preserved, some 

 portions of the body being distorted 

 and others torn away. These facts 

 are probably responsible for the ex- 

 cessive width. Unfortunately the points 

 of all seizing jaws were broken off, 

 so that their structure could not be 

 determined. 



