NO. 3570 PANDARIDAE — CRESSET 17 



Pandarus katoi, new species 



Figures 69-96 



Specimens studied. — Thirty females and 10 males from Carcharinus 

 malpeloensis (Fowler) from the Pacific (09°55'N, 85°51 ' W) . Holotype 

 female, allotype male, and 14 paratypes (10$ 9 and 4 0^0^) in alcohol 

 deposited in the U.S. National Museum. Fourteen paratypes (109 9 

 and 4cf cf) deposited in the British Museum (Natural History) and 

 the remaining paratypes in the author's collection. Additional speci- 

 mens studied: 4 collections from C. malpeloensis from the Pacific 

 Ocean (09°42'N, 85°51'W; 21°20'N, 106°50'W; 10°03'N, 85°53'W; 

 08°25'N, 83°45'W), 2 collections from C. azureus from the Pacific 

 (9°52'N, 85°29'W; 10°09'N, 86°04'W), and a single collection from 

 the Cocos Islands from C. platyrhynchus. 



Female. — ^Body form as in figure 69. Total length (based on an 

 average of 5 specimens) 5.6 mm. Greatest width (measured at the 

 widest part of the cephalon) 3.8 mm. Cephalon somewhat rounded, 

 3.0 by 3.8 mm. First thoracic segment fused to head. Dorsal 

 thoracic plates present on segments 2-4. Plates of segment 2 extend- 

 ing beyond those of segment 3 and to about middle of plates of seg- 

 ment 4. Plates of segment 2 are generally slightly divergent. Plates 

 of segments 3 and 4 fused at their bases. Genital segment 2.3 by 

 2.3 mm. Abdomen 1-segmented (fig. 70), with dorsal plate. Dorsal 

 plate 3.0 by 2.3 mm, slightly longer than wide. Caudal ramus (see 

 fig. 70) 720^1 long and 270/x wide bearing 4 spines and 2 plimiose setae. 



Oral area as in other members of genus. Adhesion pads associated 

 with first antennae, second antennae, maxillipeds, and a pair at ventral 

 distal corners of cephalon. First antenna (fig. 71) 2-segmented. 

 First segment 600^ long and bearing 13 naked setae (fig. 72). Second 

 antenna (fig. 73) 3-segmented. Terminal segment Avith 2 spines, in 

 form of stout claw. Figure 73 shows adhesion pad (dotted line) in 

 relation to second antenna. Mouth tube of typical pandarid type. 

 Mandible (fig. 74) within tube. First maxilla (fig. 75) with a terminal 

 claw, 3 short setae, and located near base of mouth tube. Second 

 maxilla (fig. 76) armed as in figm*e. Maxilliped (fig. 77) terminal claw 

 with spatulate tip and opposed by 1 large adhesion pad on basal 

 segment. 



Legs 1-4 biramose, with spine and setal formula as follows: 



seg. 1 

 seg. 2 



Leg 1 (fig. 78) with both rami 2-segmented. First exopod segment 

 with outer fringed spine. Last exopod segment with 6 terminal 

 spines. First endopod segment with adhesion pad. Last endopod 



221-534—67 2 



