788 AUSTRALIAN OCTOPODIDJE, 



Arms 2, 3, 4, 1. 

 Octopus membranaceus, Quoy; Tryon, p. 124, pi. 23, fig. 20, 21 ; 

 pi. 29, fig. 28 ; pi. 38, fig. 57. 

 Body obtuse, acutely granular with a lateral membrane ; head 

 large, granular above and below, ocular beards three, elongate ; 

 arms moderate, quadrangular ; cups large, the fourth or fifth 

 cups of the lateral arms much larger than the rest, web moderate, 

 granular. An oval blackish eye-like spot between the bases of 

 the second and third pairs of arms. 



" I have figured a portion of membrane with attached eggs (PI. 

 20, fig. 6.) obtained by Mr. D'Orbigny from one of the animals 

 collected by Quoy, also an enlarged view of the same showing 

 the embryos (ibid. fig. 7). I do not think it belongs to this 

 species or genus, however (see ante p. 44). The Museum of the 

 Academy of Natural Sciences of Philadelphia possesses three fine 

 specimens of this species fully double the size of those figured by 

 D'Orbigny and Quoy." — Tryon. 



Hab. New Guinea, China, Japan. 



Arms 2, 4,3, 1 . 

 Octopus cyanea, Gray; Tryon, p. 125. 



Body ovate above rather granular, beneath smooth ; ocular 

 tubercle rugose, superior ; arms rather elongate, conical ; cups 

 large, the tenth to twentieth pairs larger, equal sized, the lowest 

 especially of the ventral arms, one-rowed ; web broad, minutely 

 granular above especially between the upper arms. Described 

 from alcoholic specimens in the British Museum. 



Hah. Australia. 



4. Doubtful and apocryphal species. Gray. 

 Octopus ccerulescens, Ptiron. ; Tryon, p. 125. 



Body short ; arms much longer than body, cups ending in a 

 point but not clawed. Blue, varied with very small close purple 

 dots ; cups whitish. — Blainville. 



