PLATYSCELIDAE 297 



Remarks. No comment is necessary on the present specimens. Spandl's remarks 

 re Bovallius' figures are uncalled for; he has failed to realize that the figures in question 

 are not Bovallius' own figures but facsimiles from Bate and Streets. There are several 

 misprints in Spandl's own paragraph, and he persistently writes withei instead of whitei. 



Distribution. Atlantic, 37 N-21 S; Indo-Pacific. 



Rhabdosoma armatum (M. Edw.). 



Bovallius, 1890, p. 119, figs. 2, 57, 80 and pi. vi, figs. 1-20. 

 Spandl, 1927, p. 210. 

 Barnard, 1930, p. 436. 



Occurrence: 1. St. 288. East mid- Atlantic (73-0 m.). 1 J 33 mm. 



2. Ditto (250-0 m.). 1 $ 36 mm., 1 ? with embryos 42 mm. 



Distribution. Tropical Atlantic; Indian and Pacific Oceans. 



Family PLATYSCELIDAE 



Claus, 1887, p. 30. 



Stephensen, 1925 a, p. 212. 



Spandl, 1924, p. 34; 1927, p. 227 (key to genera). 



Genus Platyscelus, Bate. 

 Stephensen, 1925 a, p. 213. 

 Spandl, 1927, p. 227 (key to species). 



Platyscelus ovoides (Claus). 



Chevreux and Fage, 1925, p. 420, fig. 413. 

 Stephensen, 1925 a, p. 213, chart 30. 

 Spandl, 1927, p. 228, fig. 44. 

 Occurrence: 1. St. 29 26' N, 15° 07' W. 3 ?? (1 ovig.) 17-18 mm., and other mutilated frag- 

 ments, from stomach of Naucrates ductor. 



2. St. 64. South-west Atlantic. 2 juv. 9 and 11 mm. 



3. St. 83. South-east Atlantic. 1 ovig. ? 20 mm. 



4. St. 85. South-east Atlantic. 1 $ with embryos 18 mm. 



5. St. 89. South-east Atlantic. 2 ?? 12 and 15 mm. (the larger with embryos). 



6. St. 268. South-east Atlantic. 21 ?$ 12-18 mm. (the larger ones with embryos). 



7. St. 285. East mid-Atlantic. Seventeen specimens 9-20 mm., incl. some $$ with 

 embryos 1 5-20 mm. 



8. St. 288. East mid-Atlantic. Many, mostly $?, 10-20 mm. 



9. St. 294. East mid-Atlantic. 2 ?? 17 and 20 mm. (the larger one ovig.). 

 10. St. 298. East mid-Atlantic. 3 ?$ 13-15 mm. 



Remarks. The southward distribution is extended to lat. 48 S by these captures. 

 There seems to be some evidence of a day-night migration, the three day hauls being in 

 greater depths than the night hauls (except no. 3), though none of the captures were 

 made in closing nets. Breeding takes place in June in the South Atlantic, and in July, 

 August and October in the northern Atlantic. 



The colour of no. 3 is given as: "Pale horn colour, thoracic tergites outlined in a 



38 



