290 MR. a. p. FABRAN ON COPEPODA 



CoRYC^us DANJE Giesbrecht. 



Dahl (5) lias proposed that Giesbi-echt's name of C. danm 

 should give way to Dana's G. crassmsctdus which he belieA'es to 

 repi-esent the male of the same species. There is some resem- 

 blance in the figure given by Dana to G. danm S , but there does 

 not seem to be any reason for upsetting a well-established name 

 with a recognisable description on account of its possible identity 

 with a very imperfect description with insufficient figures, to 

 which, at best, it can only be brought home by a process of 

 exclusion. 



G. dance occurred in seven gatherings, 44 females and 70 males. 



Disiribtotion. Mediterranean Sea, Red Sea, Arabian Sea, Indian 

 Ocean, Tropical Pacific, oif Cape of Good Hope. 



OoRYCJEus GRACiLicAUDATUs Giesbreclit. (PI. XI. figs. 11, 12.) 



Dahl (5) has proposed that Giesbrecht's name should be re- 

 garded as a synonym of Dana's G. agilis, which i-epresents a male, 

 length yLy inch or '83 mm. Females, which are almost certainly 

 Giesbrecht's G. gracilicaudatus, occurred in five gatherings, nine 

 specimens. In Dahl's key they fall in with G. agilis. 



What I believe to be the male of the species occuried in three 

 gatherings, 50 specimen* (PI. XI. figs. 11, 12). The length was 

 •76 mm. The proportions of the abdomen and furca agreed 

 fairly well with Dana's figure of G. agilis, but the 3rd thoracic 

 segment had the distance between its points less than the width 

 of the hinder end of the 2nd thoracic segment. In Dana's figuie 

 the points are spread widely outwards. These males^; wei-e 

 i-emarkable in having the longest fui-cal seta, bright red. 



Distrihution. Red Sea, Arabian Sea, Indian Ocean, Tropical 

 Pacific. 



CoRYC^us CATUS Dahl. (PI. XII. figs. 1-3.) 



Dahl (5) has given the above name to a species of Govycmus, 

 the female of Avliich is only to be distinguished, according to his 

 diagnostic table, from G. ohtusits {G. ovalis of Dahl) by having 

 outstanding sharp points on the ends of the 4th thoracic segment, 

 whereas in G. obtusus the ends of that segment are short and 

 blunt. The other chaiacters, extracted from his table, are — 

 Endopodite of 4th foot with one seta ; abdomen with seta behind 

 the genital opening ; size not more than 1 mm. ; furca compara- 

 tively short ; third thoi-acic segment spreading, more than | as 

 broad as fii-st, the points not reaching to the distal end of the 

 genital segment ; anal segment very little longei' than its basal 

 width. 



There are several specimens of a female Govi/cceus in the 

 collection which agree with the above diagnosis and aie eithei' 

 G. catus or a new species, the probability being in favoui- of the 

 former view. They occur in five gatherings, 90 specimens in 

 all. The 3rd thoracic segment in doisal view, though spreading. 



