CEPHaLOPOM. 195 



Specimen 276, measuring ( .) millims. from the hinder end to the eye, has many 

 characters in common with the others above mentioned, but the colouring is much 



darker : the papillae in the centres of the rounded areas are black instead of pale, and 

 there are also black papilla) on the outer aspect of the proximal half of the arms. At 

 present it seems to me most likely a melanic example of Polypus aculeatus, but it 

 may perhaps be the young of some undescribed species. 



Polypus boscii (Lesueur). 



Localities : Pearl banks, Gulf of Manaar, Cheval district. Three small specimens 

 [271, male; 272, female ; 274, male]. 



This species has hitherto only been recorded from the Australian region. Specimens 

 272 and 274 are characteristic examples of the var. pallida, first obtained by H.M.S. 

 ' Challenger' (Hoyle, '86, p. 81, plate I.). 



Polypus macropus (Risso) (?) ; Goodrich ('96). 



Localities : Station II. or III., West Ceylon. One young specimen [230, female]. 

 Pearl banks, Gulf of .Manaar, Cheval district. One specimen [275, male]. 

 Two small specimens, 1 1 millims. and 8 millims. in length from the end of the body 

 to the eye respectively, may be the young of this widely-distributed species. 



Polypus granulatus (Lamarck) ; Hoyle ('86) ; Goodrich ('96). 



Localities : Station II. or III., West Ceylon. One young specimen, sex (?) [195]. 



Station LXV., south end of Cheval Paar. One specimen, sex (?) [211]. 



Pearl banks, Gulf of Manaar, Cheval district. Three specimens [222, 223, 238]. 



Station XVIII. , Palk Bay. south-east of Catchetivo Island, 7 fathoms. Two 

 specimens [268, 269]. 



Specimen 195, measuring 8 millims. from the end of the body to the eye, is paler 

 in colour than usual and has a double row of small chromatophores along the outer 

 surface of each arm. 



Specimen 211, measuring 12 millims. from the end of the body to the eye, I 

 thought at first must be a male, in which the hectocotylisation was just beginning ; 

 it has a slight ridge along the ventral aspect of the third right arm, but no modified 

 tip is to be seen. I have, however, since seen similar ridges on several different 

 arms. 



Polypus, juv., A Plate II., fig. 1. 

 A number of small Octopods, averaging 5 millims. in length from the hinder end 

 of the mantle to the eye, agree in having a smooth body, long slender arms, connected 

 by a very delicate umbrella extending; 4 millims. to fi millims. from the base, a double 

 row of small dark chromatophores on the outer surface of each arm, and a conspicuous 

 patch of them on the under surface of the mantle. 



Locality : Pearl banks, Cheval neighbourhood, Gulf of Manaar. Five specimens 

 [233-237]. 



2 c 2 



