22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Brady and Norman conforms to the above description and describes 

 accurately the appendage on slide 1900-3-6-452. However, Brady 

 and Norman do not mention 2 slender bristles on the end joint; this 

 brings the total number of bristles on this joint to 14, nor do they 

 mention 3 bristles in place of the epipodial appendage; those bristles 

 are present on the specimen on slide 1900-3-6-452. 



Some variability was observed in the location of 2 relatively short 

 and slender medial bristles on the margin of the end joint. These 

 bristles occupy positions nos. 5 and 8 (counting from the posterior end 

 of the joint) on the appendage on slide 1900-3-6-452; whereas, on 

 specimen A dissected by the writer, these bristles occupy positions 6 

 and 9 on the left appendage, and 7 and 9 on the right appendage. 



Seventh limb (figs. lOj, k) : Four bristles of subequal length in 

 distal group, each with 5 bells; 4 shorter bristles in proximal group, 

 each with 3 bells (fig. lOj); marginal hairs not observed on bristles. 

 Terminal comb with 9 or 10 teeth, some with basal spines and flanges; 

 2 subequal pegs opposing comb (fig. lOk). 



Furca (figs. lOi, I, m): Each lamella with 10 or 11 claws: primary 

 claws 1, 2, and 4, remaining claws secondary (fig. 10/). Secondary 

 claw no. 3 slightly larger than claws 5 to 10 (figs. lOi, m), claws 6 to 

 10 about equal in length. All claws separated from lamellae. Pri- 

 mary claws with lateral and medial row of pointed teeth; tooth length 

 varying only slightly in length on each claw. Secondary claws with 

 row of spines along each margin. Clusters of long hairs medially on 

 lamella between claws 1 to 8. 



Specimen number 1 of Miiller's syntypes contains 1 1 claws on the 

 left lamella and 10 on the right, all other specimens examined contain 

 10 on each lamella. Both Miiller (1894) and Brady and Norman 

 (1896) describe their specimens as having 10 claws on each lamella. 



Copidatory limbs (fig. 11a): Elongate terminating in 3 lobes, each 

 lobe with 2 or more short bristles, 1 lobe with sclerotized tip. 



Frontal organ (figs. 116, c) : Elongate, 2-jointed with 2nd joint 

 tapering distally and having 2 small spines at tip. 



Eyes: Medial eye large (fig. 11&). Lateral eyes large with about 

 13 ommatophores, each weakly divided by a suture into 2 parts 

 (fig. \\d). 



Discussion. — Differences between Brady and Norman's Philo- 

 medes foveolatus (Miiller) and Pseudophilomedes Joveolatus Miiller are 

 too large to be the result of sexual dimorphism. For example, each 

 caudal lamella of Brady and Norman's specimens has 10 or 11 claws, 

 whereas P. foveolatus of Miiller has only 6 ; also, upper claws of Brady 

 and Norman's specimens are subequal in length, whereas those on 

 Miiller's P. Joveolatus decrease uniformly in size proximally; in addi- 

 tion, the 3rd claw of the fm-ca on Brady and Norman's specimen is 



