CISTOPUS, SC^URGUS. 127 



Genus CISTOPTJS, Gray. 

 C. Lndjcus. Kiippell. PI. 811, figs. (51, (j-2. 



Body smooth, i)oncli-slia])('d. not bearded ; arms rather elon- 

 gated, unequal, order of length 1, 2, 3, 4 ; cups large, two or 

 three near the base of the dorsal pair of arms largest ; web very 

 broad ; bearing oval aquiferous pouches, one between each pair 

 of arms, with their openings at the base. 



Total length, 340 mill. ; length of body, 85 mill. ; of arms 

 1. 290 mill. ; 2. 250 mill.; 8. 105 mill.; 4. 190 mill. 



Celebes; India. 



Genu.« SC^URGUS, Troschel. 



As the principal character on which this genus is founded, is 

 the hectocot^dized arm of the male, it is sometimes impossible to 

 ascertain whether specimens belong to this genus or to Octopus. 

 It is very probable that some of the species described under 

 Octopus should be placed here. 



S. TITANOTUS, Troschel. 



Body oval, rounded behind, with a slight inclination to a point, 

 its length a fourth more than its breadth, skin thickly granulated, 

 with calcareous particles imbedded in it ; head a little smaller 

 but not plainly separated from the body ; eyes small with a 

 conical tentacle ; arms about double the length of body and head, 

 the three su]:)erior pairs granulated externally, the inferior pair 

 smooth; length similar (3,2, 1. 4); suckers 140 to UU on each 

 arm. Brownish-red with violet spots. 



Mediterranean. 



The proportionate length of the arms, and color are different 

 from S. Goccoi ; the suckers are also larger. The species has 

 not been figured in its entirety. I doubt its distinctness from 

 S. Goccoi. 



S. Coccoi. Yerany. PI. 89. fig. H8. 



Body oval, slightly granulate and bearded ; yellowish, sides 

 and membrane margined with blue ; arms sub-equal, dorsally 

 bearded ; a prominent ocular beard. Proportionate length of 

 arms 2. 3, 1. 4. 



Genoa. 



