On Decalopoda austral is, Eights. 3^ 



One specimen shows a distinct segmentation, two others 

 show it very indistinctly, and the remainder not at all. 



The cephalon is separated from the rest of the body by 

 a narrow neck, and in the centre of it is a short and stout 

 ocular tubercle, with four well-developed eyes. 



The proboscis is longer than the body, exclusive of the 

 abdomen, but not so long as the two together. It is much 

 swollen just beyond the middle, where it bends downwards 

 at a considerable angle. The mouth is small. 



Along the middle line of the proboscis is a narrow band 

 of small spines which can hardly be said to have a regular 

 arrangement. More laterally, there are two or three rows 

 of spines not always well defined ; the inner one comprises 

 several spines, the outer one may comprise only one or two. 

 On the whole, these are larger than the spines of the median 

 band. There may be one or two spines on the ventral 

 surface just behind the bend. 



The mandibles are well developed and three-jointed. 

 They arise from the wide extremity of the cephalon at 

 the sides of the proboscis. The first joint is long, reaching 

 almost to the beginning of the median enlargement of that 

 organ; the second joint is very small, and constitutes the 

 angle in the direction of the appendage — seen from the side, 

 its dorsal margin presents a sinuous outline, and its distal 

 extremity is very deep. The chela is articulated near the 

 ventral angle, and lies close underneath the first joint. 

 The hand is very small, both fingers are slender and 

 much curved, like a pair of calipers, the lips overlap. 

 There is no trace of teeth, nor are there any setse on the 

 appendage. 



The ten-jointed palps rise on the ventral surface of the 

 body close against the proboscis.^ The first two joints are 

 very short and wide ; the third is considerably the longest 

 of the series ; the fourth is quite small ; the fifth is long, 

 slightly constricted about two-thirds of its length — this and 

 the sixth are together equal in length to the third; the 

 seventh is a little longer than the sixth ; and the remaining 

 three are sub-equal in length, each one being more slender 



1 It is doubtful if the first is really a joint or a process of the body. 



