NO. 9 HILTON : PYCNOGONIDS 289 



Chelifori: Strongly developed and close together as they come off 

 from the narrowed end of the 1st body segment. The 1st joint is cylin- 

 drical and about half as thick as a leg. It is somewhat bent toward the 

 end and projects be3^ond the end of the proboscis. The 2nd just meets the 

 1st at an angle. The chelae are rather showy, the fingers shorter than the 

 palm. The movable finger is on the outside. There are a number of short 

 hairs on the chelae. 



Ovigers: Well developed in the male (Type). Often indicated in 

 the female by a short single joint. Six-jointed, the 1st joint rather long, 

 thick; 2nd longer, but less thick; 3rd like the 2nd, but longer; 4th 

 shorter, about ^2 as long as the last, bent at the ends into a slight bow; 

 5th about the size of the last, bent and nearly parallel with the last ; 6th 

 small, a mere knob. The last 3 joints have delicate hairs, especially on 

 their inner sides. 



Ambulatory legs: Long, rather heavy, 1st joint a little longer than 

 broad and broader than the next joint, especially its base. Provided with 

 2 slender lateral distal spines. Second coxal joint about twice as long as 

 the last but more slender. It bears a few lateral hairs, and on all legs it 

 bears a prominent distoventral projection. This is especially large on the 

 first 2 pairs of legs but is evident on the others. These spurlike extensions 

 have short hairs on them. The 3rd coxal joint is a little longer than the 

 1st but more slender. It bears a few sharp hairs on its distoventral border. 

 The femur is about the diameter of the 3rd coxal joint at its base but 

 becomes larger farther on. It is longer than the whole coxal region. It 

 bears a few hairs and a sharp knob on the dorsal distal surface. The 1st 

 tibial joint is nearly as long as the femur, narrow at its base, but extend- 

 ing distally with a few hairs on the shaft and a group around the distal 

 end. Second tibia is longer than the last but more slender. It has a few 

 prominent hairs on the shaft above and a few at the distal margin. The 

 1st tarsus is comparatively large, almost cylindrical, with very little of 

 its edge free above, but a long line below ending in a forward extension 

 armed with a group of rather long, strong hairs directed forward. It has 

 fewer hairs on its more ventral portion, but the forward end is especially 

 well provided with hairs. This part articulates with the 2nd tarsus at an 

 angle, with a marked projection of the basal part of the 2nd tarsus, into 

 a prominent lobe. This lobe is armed with 2 heavy spines at its base and 

 a double row forward of 4 or 5 more in each row nearly as large as the 

 basal hairs. The more forward part of the joint has 2 rows of much 

 smaller hairs on its rather straight ventral edge. The terminal claw is 



