I3 8 DISCOVERY REPORTS 



Colosi (1920, p. 240) instituted a new genus and species, Caesaromy sides Hguriae, for a very small 

 male specimen taken off Valparaiso. His description and figures so closely resemble young males of 

 Caesaromysis hispida that I very strongly suspect that he was dealing with a young specimen of this 

 species. The principal distinguishing feature of Colosi's new genus is the complete absence of an 



Fig. 31. Caesaromysis hispida Ortmann. A, anterior end of adult male in dorsal view, x 16; B, maxilla, x 24; C, first thoracic 

 appendage of adult male with rudimentary epipod and exopod, x 24 (exo = exopod, epi = epipod, end. = endite) ; D, distal end of 

 first thoracic endopod; E, endopod of fourth thoracic appendage, x 20; F, eighth thoracic appendage of adult male, x 20; 

 G, telson and uropods of adult male, x 16. 



exopod on the first thoracic appendage, but I have found that the vestige of this organ is extremely 

 small and difficult to find in small specimens of C. hispida and I think that it is probable that it was 

 overlooked by Colosi. For the present I feel that Caesaromysides Hguriae can only be accepted with 

 reserve. 



In the tube from station 81 there is a note on colour: 'Eyes fawn brown with longitudinal splashes 

 of milk white — a touch of red on mouth parts, on fifth legs at junction of exopod and endopod, and 

 a few red chromatophores on incubatory lamellae — otherwise quite transparent.' 



