CHAETOGNATHA COLLECTED BY STEAMER ALBATEOSS. 



255 



Fowler (1905, p. 70) it is "a very strong process; sometimes forked 

 at the external edge." 



Anterior teeth 8 to 11, short, broad, and diverging distally. Pos- 

 terior teeth 19 to 22, longer, and more closely set than anterior teeth. 



Seizing jaws (pi. 37, fig. 22), 5 to 7. Point inserted slightly less 

 than one-third its height into shaft, with an irregular triangular 

 projection at the middle of its base. Base of point and top of shaft 

 converge toward edge of jaw. Edge of point and edge of shaft on a 

 line with each other, but back of point and back of shaft intersect 

 each other, forming an obtuse angle. Tip of point slightly bent 

 toward edge of jaw. Pulp-canal displaced slightly toward back of 

 shaft, with a swollen place below base of point. Pulp evenly dis- 

 tributed throughout canal. 



TABLE 9. Measurements of Sagitta decipiens. 1 



1 All measurements made in per cent of total length of animal. 

 * Per cent of posterior fin in front of tail-septum. 



Distribution. 8. decipiens was collected from only six stations, 

 four of which were mesoplanktonic and two surface stations. 

 According to the literature the species is typically mesoplanktonic, 

 only the very young having been taken above 100 fathoms. Its 

 records of occurrence during the Philippine expedition are given in 

 Table 10. 



SAGITTA BEDOTI Bgraneck. 



Plate 35, fig. 6; plate 37, figs. 20, 24; plate 38, fig. 30. 



Sagitta bedoti BERANECK (1895), p. 137. FOWLER (1906), pp. 6-8. RITTER- 

 ZAHONY (1911), p. 20. MICHAEL (1911), p. 75. 



According to Fowler (1906, p. 6) 8. bedoti has "a very slight 

 thickening of the epidermis at the neck, but no real collarette." 

 In my 1911 report those species not taken from the San Diego 

 region were briefly described and, not having seen S. bedoti, I as- 

 sumed Fowler's statement to be correct and placed this species 

 among those in which the collarette was absent. Subsequently, 

 however, Kitter-Zahony's (1911) report appeared in which he (p. 20) 



