b THE VOYAGE OF H.M.S. CHALLENGER. 



and called Rliopalorliynchus. There can be no doubt that this is the same as the genus 

 formerly (1870) described by Jarzynsky^ as Colossendeis. AVood-Mason's species is an 

 inhabitant of Port Blair, Andaman Islands. 



Miers (1875 and 1879)^ mentions two species of Ni/mphon, and one of a new genus, 

 which he calls Tanystylum, and which is nearly allied to Achelia. These species were 

 collected at Kerguelen Island during the ^dsit of the English and American Transit of 

 Venus expeditions to that Island. Btilim (1879)'' has made a very careful study of the 

 Pycnogonids of the Royal Zoological Museum at Berlin. He describes two species of 

 Nymphoii and one of Achelia, as collected at Kerguelen; one species of Nymplion col- 

 lected south of the Cape of Good Hope, one Pallene (?) taken in the Straits of Magellan, 

 another Pallene from Mozambique, a PhoxicMlidium and a Phoxichilus collected in the 

 neighbourhood of Singapore ; finally, besides some species from Northern Europe, three 

 species found near Enosima (Japan); one species of a new genus, which Bohm calls 

 Lecithorhynchus, one Ascorhynchus (GnamjJtorhynchus, Bohm), and one species of 

 Pallene. Slater (1879)* published a short j^aper on a new genus of Pycnogonids {Para- 

 zetes) found in Japan, and descrilDcd in the same paper a variety of Pycnogonum litorale 

 from the same country. 



In the Boston Journal of Natural History, Eights (1836"?) mentions the genus Decalo- 

 poda, but I have not been able to ascertain whether this is a good genus, nor where it 

 has been found.® A species of Pasithoe described by Dr Gould'' is, according to Wilson 

 {loc.cit. p. 2), " indeterminable." To Mr Wilson's paper I am also indebted for the men- 

 tion of a species of Pycnogonid found on the coast of Chili : it seems to be a species of 

 Pyc7iogonum.'' 



In this enumeration the reader will not find a complete list of the descriptive litera- 

 ture of Pycnogonida, but all the more important publications, together with the greater 

 number of the minor papers on our group are mentioned. With a few exceptions the 

 zoological publications about Pycnogonids are very superficial, and this I believe is owing 

 partly to the circumstance that many authors who have had no opportunity of comparing 

 large collections of difierent forms have published descriptions of species and even of 

 genera from the examination of such species only. To describe new species, however, ought 



' Th. Jarzyusky, loc. cit. 



- E. J. Miers. — Descriptions of new species of Crustacea collected at Kerguelen's Island, by tlie Rev. A. E. Eaton. 

 Annals and Magazine of Natural History, fourth series, vol. xvi., 1875 ; Crustacea of Kerguelen Island, Philosophical 

 Transactions, London, vol. clxviii.; extra volume, pp. 200-214, 1879, pi. .\i. 



^ R. Bohm, loc. cit.; the same in Sitzungsberichte der Gesellschaft naturfor.schender Freunde in Berlin, 1879, 

 pp. 53 and 140. 



■■ Henry K. Slater. — On a new genus af Pycnogon {Para::dcs) and a variety of Pijcnoyonum littorak from Japan, 

 Ann. and Magaz. of Nat. History, 5th series, vol. iii., 1879. 



'' Boston Jouinal of Natural History, i. 204, t. 7. (See Cuvier's Animal Kingdom, London, Wm. S. Orr & Co. 

 1840. p. 468.) 



" Proc. Boston Society Nat. Hist., vol. i. p. 92. 



' Gay.— Historia fisica y politica de Chile, Zoologia, p. 308, pi. iv. fig. 8, 1854. 



