POLYCHELES GEANULATUS. 123 



What T have here considered to be the rudiments of epipods on the tenth 

 to the thirteenth pairs of appendages are simply thin membranous expan- 

 sions at the base of the podobranchige similar to those of P. nanus. The 

 third maxilliped carries a minute epipod but no podobranchia. Connected 

 with the articular membrane at the base of this appendage is a single minute 

 arthrobranchia. This is present in the typical P. sculptus also, in which it 

 has been interpreted by Smith as a questionable podobranchia.* 



Dimensions of a female : length, 110 mm. ; length of carapace, 48 mm. ; 

 breadth of carapace, 35 mm. ; length of antennal scale, 10 mm. ; length of 

 telson, 20 mm. ; length of cheliped, 123 mm. (ischium, 21 mm., merus, 

 36 mm., carpus, 23 mm., propodite, 39 mm., dactylus, 24 mm.). 



A sketch of a living specimen (Sta. 3353, 695 fath.), made by Mr. 

 Westergren, and reproduced on Plate C, shows the color to be a pale rose 

 purple on the dorsal side of the carapace and abdomen, deepening to a 

 brighter orange red on the thoracic appendages, the branches of the pos- 

 terior abdominal appendages, and the flagella of both pairs of antennae, 

 and fading to a delicate bluish white on the hepatic and anterior branchial 

 regions. The raised ridges of the carapace and abdomen are whitish, the 

 setae on the margins of the basal parts of the antennae, swimmerets, etc., are 

 yellow. Some of the depres.sed areas of the hinder portion of the carapace 

 and abdomen display a greenish tint in the colored drawing, but I suspect 

 that this hue was derived from a little of the adhesive green mud which 

 formed the bottom from which the specimen came. 



Polycheles granulatus Fax. 

 Plate XXXIL, Fig. 1 ; Plate XXXIII., Fig. 2, 2\ 



Bu'J. Mus. Comp. Zool., XXIV. 197, 1893. 



Carapace long oval, its greatest width at the anterior branchial region ; 

 the dorsal surface of the carapace is furnished with microscopic setae and is 

 granulated but almost destitute of spines ; there are two small rostral spines, 

 and back of these, on the low granulated median carina, he four spinules 

 arranged in two pairs, the posterior pair closely followed by a single s-pinule; 

 all of these spinules are on the anterior half of the gastric area ; the sub- 

 marginal ridge on the branchial regions is incurved and composed of minute 

 spinulose granules ; the hepatic region is but indistinctly separated from the 

 * BuU. Mus. Comp. Zool., X. 29, 1882. 



