396 DISCOVERY REPORTS 



In addition, the Discovery specimen has long, narrow and crescentic eggs (21 x 5-5 mm.) 

 exactly like those of niagellaniciis . The size and shape of the oviduct is exactly alike in 

 the two forms, and the relative proportions of oviduct and vagina are alike. The form of 

 the funnel-organ is uncertain. 



While admitting the very remote possibility that magellanicus is a form of eureka, 

 I believe that the Discovery specimen is more like the former than the latter (except 

 in the diameter of the suckers). We have no female of eureka for comparison, but 

 it is worth pointing out that, though the Discovery specimen and the type female and 

 male of magellanicus are very alike, the latter differs from the eureka (male) in the 

 hectocotylus. 



Sub-family OCTOPODINAE 



Octopus (Enteroctopus) megalocyathus, Gould. 



St. 222. 23. iv. 27. St Martin's Cove, Hermite Island, Cape Horn. 30-35 m. Large rectangular 

 net: one ?. 



Dimensions {in mm.). 



While admitting that the correct names and the identity of the Magellanic Octo- 

 podinae are still uncertain, I do not feel much hesitation in referring this specimen 

 to the broad form of Gould's species as re-defined by myself (1929). The very 

 characteristic funnel-organ, like a flattened W (cf. Robson, 19290, p. 617, and 1930, 

 p. 240), wide suckers, smooth skin, light brown colour, the number of branchial 

 filaments (eleven in each demibranch), the form of the web (A, B, C, and D subequal, 

 and E more or less markedly shorter), all remind one strongly of certain forms of mega- 

 locyathus. The arms are rather shorter, and the web is certainly deeper than in the 

 average megalocyathus. The ink sac is present. The oviducts, etc., and ovary are in a 

 very undeveloped (? atrophied) condition. 



Octopus (Octopus) rugosus (Bosc). 



St. WS 237. 7. vii. 28. 46° 00' S, 60° 05' W. 150-256 m., coarse brown sand, shell fragments. 

 7 mm. mesh net on trawl: one ?. 



Simon's Town. 29. vi. 27. Found while draining the dock: one $. 



The specimen from near the Falklands is typical in respect of its colour and reticulate 

 pattern, squat body, rather broad head, shortish arms and web-form. The skin is closely 

 and tightly wrinkled, and it is impossible to say if the typical shagreen of rough warts is 



