Pedipalpi, Ricinulei, and Opilioiies. I3 



Trihe Tartarides. 

 In H. J. Hansen and William Sorensen: The Tartarides. 

 A Tribe of the Order Pedipalpi (Arkiv for Zoologi utgif. af 

 Svenska Vet. Akad. Stockholm, Band 2, Nr. 8, 1905) I described 

 15 species of this most interesting group, mentioned a Califor- 

 nian species established by Cook but unknown to me, and pointed 

 that Artacarus liberiensis Cook must be considered a nomen 

 nudum. Since 1905 Randall Jackson has described (1907) an 

 interesting form taken in the Botanic Gardens, Kew; in three 

 small papers (1911) F. H. Gravely established no less than 

 2 species from Ceylon and 4 from India; K. Kraepelin (191 1) 

 established a new species from Formosa; Hirst (1913) a species 

 from the Seychelles; finally H. J. Hansen (1910) a new species 

 from Kihmandjaro. Thus in all 26 species have been really 

 described, but of these only 2, viz. Schizomus montanus H. J. H. 

 and Trithyreus africanus H. J. H., are of African origin. And 

 it may be added that both these species have been established 

 on female specimens which certainly or scarcely had not arrived 

 at sexual maturity, and consequently the knowledge must be 

 somewhat imperfect. The Fea collection contains adult spec- 

 imens of both sexes of two new species, and this material is 

 therefore ver>' valuable, though the forms do not exhibit peculiar 

 features expanding the general conception of the type. 



Trithyreus parvus n. sp. 



PI. I, figs. 3 a — 3 k. 



Male. 



Head with an oblong, rounded, badly limited paler eye- 

 spot on each side, but without an\- cornea. Cephalic sternum 

 a little longer than broad. Second thoracic tergite with a nar- 

 row and whitish median strip of thinner skin. 



Palps (figs. 3 a and 3 b) somewhat slender, about two-thirds 

 as long as the body. Trochanter has the lower front part some- 



