Nachdnick verboten. 

 Uebersetzungsrecht vorbehalten. 



Oll Discoaraclme brevipes Hoek, a Pycnogonid from 



South AMcaO. 



By 

 Leon J. Cole. 



With Plate 13. 



Througb the kindness of Dr. W. F. Purcell of the South African 

 Museum I received some time ago 11 specimens of Pycnogonida for 

 Identification. These proved all to belong to one species, Bisco- 

 arachne hrevipes Hoek, described from a Single specimen, a female, 

 collected during the cruise of the Challenger 2) ; and curiously enough, 

 they were taken at the same place as that specimen, namely, at Sea 

 Point (Table Bay), near Cape Town. It is not stated at what 

 depth the Challenger specimen was taken 3), but Hoek says, "This 

 species with its short legs and highly concentrated body, is a true 

 littoral form", and the label with the specimens from Dr. Purcell 

 States that they were found "On seaweed between tide-marks". The 

 latter were collected in July, 1899; the former in November, 1873. 

 So far as I know no record has been made of this species, which 

 forms the type of a new genus, since the time of its first description, 

 and for this reason it seemed that a further description, and especi- 

 ally a description of the male, which differs considerably in some 

 points from the female, was desirable. 



1) Work from the Zoological Laboratory of the University of 

 Michigan, Jacob Reighard, director. 



2) Hoek, P. P. C, Report on the Pycnogonida, dredged by H. M. 

 S. Challenger during the years 1873 — 76, in: Challenger Rep., ZooL, 

 V. 3, 1881, p. 74—76, tab. 7, figs. 8—12. 



3) In a synoptic table, p. 29, it is given as "Shore". 



