452 E. IJAY LANKESTEH. 



has expressly stated that he has not received any specimens 

 corresponding to Norman's aberrant form with rostriform 

 immobile eye peduncles and aborted rostrum. His specimens 

 were dredged off Porto, Gibraltar, VillefranchOj Marseilles, 

 and Ajaccio. He says {' Travailleur/ p. 39), " Dans tons les 

 specimens que nous avons etudies, et ils sout nombreux, les 

 pedoncles oculaires sont mobiles, la surface corneenne est lisse 

 et parfois meme uu pen coloree, le rostre en outre est tres 

 saillant. Comme ces specimens habitent des profondeurs tres 

 variables (de 300 a 350 metres), on pent conclure que la 

 transformation des yeux en pointes rostrales [resp. Norman's 

 aberrant specimens — E. R. L.] est fonction, non point de la 

 distribution bathymetrique, mais de la distribution geogra- 

 phique. Les exemplaires du nord, en d'autres termes, pre- 

 senteraient seuls cette transformation." 



I think it will be most convenient, as well as logical, to 

 regard Norman's aberrant form as a distinct species, to which 

 I shall give tlie name C. Normani. It appears from a refer- 

 ence to MS. in the "Travailleur" report that Dr. Norman him- 

 self had contemplated treating this form as a distinct species 

 under the name Ethusa mirabilis. I should adopt the name 

 so long ago suggested by my friend were it not for the fact 

 that it seems possible that there may be other forms — terms 

 in the series — allied to C. granulatus and C. Normani, 

 and that it will be convenient to associate the name of each 

 form so far as possible with some person or thing distinctive 

 of its discovery. 



The position and characters of the three species of Cymo- 

 nomus may accordingly be thus given : 



Section Oxystoma, M.-Edw. (of the Bracliyura genu in a, 



Boas) . 

 Family Dorippida), M.-Edw., including sub-fumilies Cyclo- 



dorippina3 and Dorippina?.^ 



^ Tlie characters of tlicse divisions and tlic included genera are very fully 

 given by MM. Edwards and Bouvier in the "Blake" volume quoted above. 



