REPORT ON THE PYCNOGONIDA. 



Costa (1838-61)^ puljlished short notes on the Pycnogonids found there. Philippi proposed 

 a new genus {Endeis), which is perhaps identical with Pasithoe, Goodsir ; and a second genus 

 (Parihoea), with the species Parihoea sinnipalpis. Costa introduces (1838) the genus 

 Phanodemus, in all probability identical with Pepkredo, Goodsir ; in his Microdoride medi- 

 terranea (1861) he proposes three new genera : Rhynchothorax, Plati/chelns, and Ahynous. 

 From the Gulf of Naples Costa knows in aU seven species, whereas the total number of 

 species of the Mediterranean found in Philippi's paper is only four. A monograph on 

 the Pycnogonids of the Mediterranean, and especially of the Gulf of Naples, ^ill very pro- 

 bably soon appear ; it will form the second part of the Studi e Ricerche di Cavanna (1877),'^ 

 and will also be published by Dohrn, as announced in his Neue Untersuchungen (1878).' 



Of all Pycnogonida, those found on the west coast of North America are best known. 

 Careful attention was paid to them by Stimpson (1852),* Verrill, Smith (1874),-' but 

 especially by Wilson (1878-80)," who in his Pycnogonida of New England, enumerates 

 fourteen species belonging to nine genera, two of which {Pseudopcdlene and Anoplo- 

 dactylus) are new to science. Though I do not believe that these new genera after a 

 careful examination wall hold good, and though I think it a pity that Wilson in his 

 researches has not taken advantage of recent investigations (especially those of Cavanna), 

 yet there can be no doubt, I believe, that his paper is one of the best descriptive publi- 

 cations after those of Johnston and Kroyer. 



For the other countries of our glolx% a very brief enumeration may suffice. As far 

 as I have been able to ascertain, l)y far the greater numl^er of the species described are 

 littoral ; from the open ocean very few species are recorded. Two species described by 

 White (1847),' inhabiting the South Sea, are exceptions. White describes them as species 

 of Nymphon, whereas I believe that they ought to be considered as PhoxichiUdmms. 

 From the open ocean are also those species (one of Nymphon, another of Phoxichilidium) 

 mentioned by Grube (1869)^ as occurring in the Chma Sea. Grube's descriptions as 

 well as those of White are extremely incomplete. 



Wood-Mason (1873)' described a species of a genus which he believed to be new, 



1 0. G. Costa.-Fauna del Regno di Napoli, Crostacei et Aracnedi, Napoli, 1838 ; Microdoride mediterranea, tomo 



prirao, Napoli, 1861. . ,. „ ,. . • 



2 G. Cavanna.-Studi e Ricerche sm Picnogonidi, parte prima (Publicazioui del R. Istituto di Studi saperiori 

 pratici et di perfezionamento in Firenze, Sezione di Scienze fisiche e naturali), Fireuze, 1877. 



3 A Dolirn.-Neue Untersuchungen iiber Pycnogoniden, Mittheil. a. d. Zoologischen Station'zu Neapel, i., 1879. 



* William Stimpson.-Synopsi8 of the Marine Invertebrata of Grand Manan, Smithsonian Contributions to Know- 

 ledge, January 1853. 



5 Smith in Report on the Invertebrata of Vineyard Sound. In Part I. of the Report on the Condition of the Sea- 

 Fisheries of the South Coast of New England, 1873. , „ c. • i » * 



8 E B Wilson.-Descriptions of Two New Genera of Pycnogonida, American Journal of Science and Arts, 

 vol XV , 1878 ; Synopsis of the Pycnogonida of New England, Transactions of the Connecticut Academy, vol. v., 1880. 



7 AdamWhite.-Descriptionsof Newor Little-Knowai Crustacea in the CoUectiou at the British Museum, Pro- 

 ceedings of the Zoological Society of London, part 15, 1847. 



8 E Grube in Jahresbericht der Schlesischen Ges. fiir vaterliindische Ciiltur, Breslau, 1869. 



» James AVood-Mason.-On Rlwpalorhynchus kroyeri, a new Genus and Species of Pycnogonida, with plate xiii., 

 Journal of the Asiatic Society of Bengal, part 2, 1873. 



