NO. 9 HILTON : PYCNOGONIDS 309 



late as is the rest of the body. In the 3rd leg the 3 coxal joints are more 

 or less subequal in length as are the femoral and 1st tibial joints. 



The 2nd tibial joint and the 2nd tarsal joint, not counting the claw, 

 are about the same length. On the ventral measurements the 1st tarsal 

 joint is very slightly longer than the terminal claw. The 2nd tibial joint 

 is about % the length of the 1st, and both coxal joints are equal to % the 

 femoral joint in length. The inferior borders of the tarsal joints, and to a 

 less degree the distal ends of the tibial joints, are finely spinulate. 



Color: Light tan, with reticular marks, deep red brown. Ocular 

 tubercle dark, with deeply pigmented eyes. 



I have examined one specimen, a male from Santa Cruz Island of the 

 Galapagos group. This specimen carried a single bunch of eggs which 

 occupied about all the ventral area of the animal. The eggs were just a 

 shade under 0.1 mm. in diameter. 



Measurements: Total length, 6.25. Proboscis, 3 long by 1 wide. 

 First body segment, 1 long; 2nd and 3rd segments, the same as the 1st; 

 4th, 1.25. Width of the central part of the body, 1,5 ; lateral appendages, 

 1 on each side of this. Ambulatory legs a little longer in front, the poste- 

 rior legs progressively shorter after the 1st pair. Length of joints in the 

 1st leg, 1st joint, 0.75 by 1 broad; 2nd, 0.7 by 1 ; 3rd, 0.7 by 0.75 ; 4th, 

 1.5 by 1 ; 5th, 0.2 by 1 ; 6th, 1.25 by 0.75 ; 7th, 0.25 by 0.25 ; 8th, 0.1 by 

 0.3. Claw, 0.5 by 0.2. The ovigers, not previously described, are 8-jointed, 

 counting the large terminal claw as one. In measurements the joints are 

 as follows: 1st joint, 0.175 by 0.2 broad ; 2nd, 0.15 by 0.175 ; 3rd, 0.3 by 

 0.3 ; 4th, 0.4 by 0.3 ; 5th, 0.35 by 0.15 ; 6th, 0.4 by 0.425 ; 7th, 0.275 by 

 0.175. The claw is 0.25 by 0.75 at the base. 



This species differs from many other forms of the same genus because 

 of its reticulation. It also has fewer tubercles on the legs than P. indicum, 

 madagascarensis, and mucronatum. It differs from the first in lacking the 

 armed ridge back of the ocular tubercle and in having a subcylindrical 

 proboscis instead of a conical one. It also has very low dorsal tubercles. 



Schmitt describes the species from a female taken with a smaller male 

 with eggs, collected at low tide on a small rocky reef, off shore north of 

 Tagus Cove, Albemarle Island, Galapagos, lat. 0° 14' S., Station 65-33, 

 Feb. 9, 1933. It measured : proboscis, 2.4 by 0.9; trunk, not counting lat- 

 eral processes, 2.6 ; caudal segment, 1 . 



Two other females were one from Chatham Island, Jan. 31, 1933, 

 from dredging 2-3 fms., east of Wreck Bay, Station 41-33, and one, Sta- 

 tion 59-33, from a rocky shore east of Cormorant Point, Charles Island, 



