1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 105 



Legs of female (PI. Y, fig. 11) proportioned as in Oxydesmus; basal 

 joints scarcely hirsute, the last joint densely so. 



Length, about 35 mm.; width, 7 mm. 



LocaUty. — Tana Eiver, East Africa. 



Type. — National Museum collection, obtained by Mr. Chanler; one 

 female specimen. 



ORODESMUS UNICOLOR, new species. 

 (PI. VI, Figs. 8-10.) 



Intermediate between 0. mastopJiorus and 0. bicolor, more nearly 

 related to the latter, with the description of which as here given it 

 coincides, except in the following characters. 



First segment with anterior tubercles smaller and farther apart 

 than in Plate Y, fig. 12. Median tubercles of posterior row not so large 

 and not coalesced. 



Second and third segments also with median tubercles not coalesced; 

 those of the middle (longitudinal) row larger than in fig. 12; the three 

 median tubercles on each side, as in mastophorus, united into a longitu- 

 dinal ridge, but separated medianly, though not so widely as in masto- 

 phorus. 



Fourth and succeeding segments with the tubercles gradually smaller, 

 the median not specially enlarged or coalesced. 



Segments with the three rows of dorsal areas very distinct, the sur- 

 face of the areas coarsely granular rugose, much more than in 0. bicolor; 

 tubercles also somewhat more prominent. 



Below the carinse the tubercles are much as in Plate Y, fig. 9; the 

 process somewhat larger, but the individual tubercles less numerous 

 and not so long. 



Posterior segments with the lateral margins distinctly narrower than 

 in Plate Y, fig. 13, and the pore much closer to the edge. 



Preaual scale with median process shorter than in mastophorus. 



Color of dry specimen light dirty brownish with a pinkish tinge, 

 very distinct on the carina} and posterior segments; legs, head, and 

 antennte also pinkish. 



Animal with more of the aspect of 0. mastophorus than of O. bicolor; 

 dorsum less arched than in 0. bicolor', about the same as in 0. mas- 

 tophorus. 



Length, 38 mm.; width, 6 mm. 



Locality. — A female specimen from Mombassa, one of the types of 

 0. mastophorus, Gerstiicker, as is noted under that species. The pinned 

 specimen is in the Berlin Museum. 



ORODESMUS MASTOPHORUS (Gerstacker). 



(PL VI, figs. 12-15.) 



Polydesmus mastophorus, Gerstacker, Deckeu's Keise, p. 517, 1873. 

 Polydesmus (Oxydesmus) masto2)horus, Karsch, Troschel's Archiv, p. 45, 1881. 



Yertex with deep sulcus, on each side along the first segment rugose. 

 Antenna? slender. 



