NO. 9 HILTON : PYCNOGONIDS 279 



hairy. Ovigera 10-jointed, few hairs. Fourth and 5th joints in the male 

 very long and slender. The last 4 joints have a regular series of serrate 

 spines. The terminal claw is well developed. Ambulatory legs as a rule 

 very long and slender, few hairs. Second tibia the longest joint, tarsal 

 joints more or less elongate. Terminal joint usually with distinct auxiliary 

 claws. Egg masses in the male globular, small, usually one bunch to an 

 oviger. 



Nymphon pixellae Scott 

 Plate 35 



Nymphon pixellae Scott, Ann. Mag. Nat. Hist., Ser. 8, vol. 10, 1912, 



pp. 207-208, pi. 7. 

 Nymphon solitarium Exline, Proc. U.S. Nat. Mus., vol. 83, no. 2991, 



1936. 

 Nymphon pixellae Hedgpeth, Ann. Midland Naturalist, vol. 22, no. 2, 

 1939, pp. 458-459. 



Distinctive features: Body rather slender, elongate, lateral processes 

 rather long. First joint of the chelifori quite a little longer than the 

 proboscis. Jaw portion of the chelifori long, with the tips crossing. Many 

 slender teeth on the jaws. Paired tarsal claws are about half as long as 

 the unpaired. Eye tubercle sharply pointed. First joint of the tarsus longer 

 than the 2nd. 



Description 



Body: Slender, elongate, segmentation marked, lateral processes 

 well separated. Trunk segments nearly equal in thickness except the 

 posterior, which is a little more slender. Segments of the body about the 

 same length, a little thicker where the lateral processes join. The ante- 

 rior segment forms a well-marked neck. 



Ocular region: The eye tubercle is just forward of the origin of the 

 1st pair of walking legs, between the bases of the ovigera. The eye eleva- 

 tion is well marked and abruptly pointed at its end.The eyes are at the 

 basal end of the ocular elevation. They are large and almost touch. They 

 are also quite well pigmented. 



Abdominal segment: Cylindrical, pointed up, rather small. 



Chelifori: First joint rather slender, quite long. The 2nd segment 

 is shorter and a little heavier. The fingers are long, slender, with m.any 

 teeth. The fixed finger is nearly straight to near its tip, which is strongly 

 curved. 



Palpi: Slender, the 1st joint is very small, the 2nd is longer, the 

 last 3 joints are shorter than the 2nd and about of equal length. 



