ATLANTIC AND CARIBBEAN PYCNOGONIDA—HEDGPETH 28] 
Measurements.—As follows: 
Mm. | Third leg: Mm. 
POD ON CIS see ese te a 2.1 COxaes oo. ails arareee eS 1.5 
Diameter at base-.-._- 222-2 1.0 GRE 12,22 ays Se ee 1225 
Teneo et Brrr ORES 3. 0 Mirde tibiae. ee 1:0 
Cephalic segment___.._-.------ 1.0 Second tibiae | On sePe 8 0. 75 
Second lateral process, width___. 2.0 8 Is (2 ARE OE len Seabees 0.1 
Abdomnient 210 542 JOS Lee Suar 0.9 PrOpoaust se Se oe 0.9 
Terminal Claw 2 = 0.5 
Remarks.—Although Hilton’s figure (1942b, pl. 48) of his Pyeno- 
gonum panamum is suggestive of this species, it is actually quite 
different. The lateral processes of Hilton’s species are well separated, 
the legs slender, and the size of the type specimen is at least half again 
as large as the specimens of P. reticulatum. The integument of P. 
panamum does not have the numerous small tubercles found in this 
species. 
The name for this species was proposed (on labels) by Dr. Leon J. 
Cole. 
Genus PENTAPYCNON Bouvier, 1910 
Like Pycnogonum, but with five pairs of legs. Two species are 
known, the tropical American Pentapycnon geayi, and the Antarctic 
P. charcott. Pentapycnon charcoti is adorned with large tubercles, 
which give it a nodular appearance. The relationships of the pentam- 
erous species of Pentapycnon with the ‘‘normal’” Pycnogonums is 
discussed in some detail in another paper (Hedgpeth, 1947). 
PENTAPYCNON GEAYI Bouvier 
Figure 53 
Pentapycnon geayi Bovuvirr, 191la, pp. 491-494; 1911b, p. 1140; 1913, p. 161. 
Record of collection.—Johnson-Smithsonian Expedition station 16, Feb. 3, 1933, 
north of Puerto Rico, lat. 18°31’ N., long. 66’10’15’’ W., 38 fathoms, 1 female. 
Previously recorded from the vicinity of Cayenne, French Guiana. 
