1 8 



22 



17 



23 



16 



28 



15 



26 



H 



21 — 28 



13 



23—30 



1 1 



27 



8 



29 



7 



28 



9 



21 



10 — 1 1 



17 — 21 



10 



21 



10 



27 



9 — 10 



24—29 



10—13 



20—32 



9— 11 



18—27 



7 



2 1 



7-8 



16 — 20 



6 



1 2 



7 



the teeth as terminating in three points („une couronne multicuspide"). Unfortunately I am 

 unable confirm or deny this point with accuracy, but, so far as I can see, the tips of the teeth 

 are of the usual conical character. The appearance of fine points, noticeable occasionally at the 

 tips of both jaws and teeth in Chaetognatha, seems to be often explicable as the result of 

 wear, the tip appearing to fray out into strands. 



Bedoti strongly resembles serratodentata, but may generally be distinguished under a 

 lens by its smaller head, slenderer body, and more taper tail; under a microscope, the closely 

 set, brown, numerous, obtuse teeth distinguish it at once. Formulae : — 



6 

 6 

 6 



6-7 

 6-7 

 6-7 

 5—7 

 6 



6-7 

 6 33 7 



5 35 6—7 5 10 



The greater variation at about 13 mm. of total length is probably only due to the 

 fact that that was about the usual length of the specimens ; hence more were measured at that 

 length than at any other. 



A single specimen from Station 168 exhibited an abnormal number of teeth for its 

 length : its formula was 



11. 22. 6 — 7. 10—11. 3 1 — 33- 



But the arrangement of the fins, the corona, the character of the teeth and jaws, all agreed 

 so well with Bedoti that it must provisionally be left as an abnormally or precociously toothed 

 individual, comparable to the Hairy Man or Bearded Woman of a village fair. 



I have no doubt that Doncaster's species polyodon is merely a synonym for Bedoti. 

 Polyodon was said to differ "in having a corona, in the length of the ovaries, and the greater 

 number of teeth". With regard to these points — a corona is only to be seen in well-preserved 

 specimens, and had been lost in B^raneck's material; the extension of the ovaries, depending 

 entirely on the age and sexual condition of the animal at the moment of capture, cannot be 

 accepted as a diagnostic character ; and the number of teeth is well within the limits of variation 

 tabled above. Doncaster himself expressed the suspicion that the two species might be identical; 

 this seems to be completely justified on the examination of a large number of specimens. 



Nor have I any more hesitation in placing the bipunctata recorded by Aida from Misaki 

 as a synonym of Bedoti. Aida, who quite correctly noted the discrepancy in the number of 

 jaws and teeth, does not seem to have been acquainted with Beraneck's paper. 



