18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



segment with 3 inner spines. Leg 2 (fig. 79) with both rami 2-seg- 

 mented. First exopod segment with outer spine. Last exopod 

 segment with 10 spines (outer 4 articulated, inner 6 not). First endo- 

 pod segment unarmed. Last endopod segment wdth 4 naked spines. 

 Leg 3 (fig. 80) with both rami 2-segmented. First exopod segment 

 with outer spine. Last exopod segment with 6 spines. First endopod 

 segment unarmed. Last endopod segment with 2 terminal spines (all 

 spmes on rami of leg 3 naked) . Leg 4 (fig. 81) with both rami 1-segmented. 

 Exopod with 7 spines. Endopod with 1 short spine. All spines 

 naked. Leg 5 (fig. 82) with outer single spine and inner lobe with 3 

 spines. Leg 5 located near point of attachment of abdomen (see 

 fig. 70). Area of attachment of spermatophore at junction of abdo- 

 men and genital segment, composed of a heavily sclerotized area witli 

 shelf to receive neck of spermatophore. Spermatophores crossing 

 with neck penetrating opening of the seminal receptacle of opposite 

 side. Egg strings long and composed of single strands of eggs. 



Color in life creamy yellow wdth light brown pigmentation as in 

 figure 69. 



Male. — Body form as in figure 83, Total length, based on 5 speci- 

 mens, 7.4 mm. Greatest width 4.2 mm measured at widest part of 

 cephalon. First thoracic segment fused with head. Segments 2-4 

 free and without dorsal plates. Genital segment somewhat longer 

 than wide, 1.98 by 1.72 mm with spermatophores visible within. 

 Abdomen 2-segmented. First segment 300/x long. Second segment 

 410/i long. Caudal ramus (fig. 84) with 6 setae, the inner 4 long and 

 plumose. Inner margin of caudal ramus bearing row of hairs. 



Oral area similar to that of female. As in P. floridanus, adhesion 

 pad of second antenna considerably smaller than one associated with 

 first antenna (204:516/i) (see fig. 85). First antenna (fig. 86) as in 

 female except spines more heavily barbed. Second antenna (fig. 87) 

 4-segmented with adhesion pad on basal segment. Terminal segment 

 in form of claw with 2 median spines. Mouth tube and mandible as 

 in female. First maxilla (fig. 88) similar to that of female except 

 terminal claw has a more striated surface. Second maxilla (fig. 89) 

 as in female. Maxilliped (fig. 90) with terminal claw pointed rather 

 than spatulate as in female. Opposing adhesion area composed of 

 3 pads instead of 1 as in female. 



Legs 1-4 not modified as in female and with spine and setal formula 

 as follows: 



seg. 1 

 seg. 2 



Legs 1-4 biramose and each ramus 2-segmented. All setae plumose. 

 Leg 1 (fig. 91) with adhesion areas as in the figure. Leg 2 (fig. 92) 



