2l8 Mr. R. I. Pocock on new Geophilidge 



than half as long as the head and almost as wide posteriorly 

 as the first tergite, its sides strongly converging. 



Maxillary coxoi wider than long, largely covered poste- 

 riorly on each side by the episternal plates, without chitinous 

 lines, the anterior border lightly excavated ; theyee^ unarmed, 

 largely overlapping the head at the sides, but not in front, 

 being short, with the joint of the claw considerably behind 

 the anterior angle of tlie head. 



Tergites^ except the first and a few at the posterior end of 

 tlie body, bisulcate ; prescuta of normal size. 



Tracheal sclerites in contact with the tergites and smaller 

 than the prescutal pleural sclerites. 



Sternites at the anterior end of the body with a median 

 porous area, in the middle and at the posterior end without 

 porous area and not depressed or sulcate. 



Anal somite. — T'er^yzVe narrowed behind, not covering the 

 pleurte ; pleurce small, hairy, but not porous, or at most only 

 porous beneath the margin of the sternite; sternite hairy, mode- 

 rately wide, its sides strongly converging posteriorly ; legs very 

 hairy, short and thick, only a little longer than those of the 

 preceding somite, the two proximal segments almost fused 

 together and very much thickened, the second, third, and fourth 

 segments posteriorly excavated beneath, the margins of the 

 excavation thickly hairy ; terminal segment not armed with a 

 claw. 



Number of pairs of legs 73. 



Length 59 millim. 



A single male specimen from St. Vincent, one of the Cape- 

 Verde Islands, collected by the officers of H.M.S. 'Chal- 

 lenger.' 



This species is very distinct and may be recognized by its 

 five-jointed anal legs, by the thickness of the two proximal 

 segments, and by the excavations on the under surfaces of 

 the second, third, and fourth segments of these same appen- 

 dages. These characters may, however, belong only to the 

 male sex. 



Geophilus parthorum^ sp. n. (PI. XII. figs. 4, 4 a.) 



Colour ochraceous ; head pale castaneous. 



Body robust, attenuated anteriorly and posteriorly, but 

 more posteriorly than anteriorly. 



Head a little longer than wide, punctured ; frontal plate 

 indistinctly defined. 



Antennce composed of 14 segments, moderately long and 

 stout, nearly naked, hairy on the inner surface in the proximal 



