ZOOLOGY OF FERKAXDO NOEONHA. 527 



Ochraceous, head-plate slightly darker. 

 Number of pairs of legs 73 (iu the female). 

 Antennae hirsute, the distal end more so than the proximal. 

 Segments of the proximal half cylindrical, those of the distal half 

 narrowed proximally ; apical segment as long as the two pre- 

 ceding segments. 



Ilead-plate with straight anterior mai-giu, rounded lateral 

 margins, and concave posterior margin ; sparsely clothed with 

 hairs, and almost destitute of punctures. 



Frontal lamina coalesced with rest of head-plate. 

 Basal lamina about twice as wide as long, with abruptly con- 

 verging lateral margins and concave anterior margin. The pre- 

 basal lamina visible iu the space left between the concave 

 posterior border of tlie liead-plnte and the concave anterior 

 border of the basal lamina. 



Maxillary sternite wider than long; its anterior margin slightly 

 excavated, but scarcely bidentate. 



Maxillary feet largely visible from above, and projecting 

 slightly in front of the head-jilate ; the segments on the inner 

 side furnished with hairs but not armed with teeth. 

 Dorsal plates conspicuously bisulcated. 



Ventral pores occupying a circular area in the posterior half 

 of the sternites. 



Legs sparsely clothed with longish hairs. 

 The anal tergite wide, but not covering the pleurae ; with 

 rounded postero-lateral angles, staight posterior margin, and 

 lateral margins slightly converging behind. 



Anal pleurae smooth, not furnished with punctures. 

 Anal sternite very wide at the base, gently converging lateral 

 borders, rounded posterior angles and straight posterior margin. 

 Anal pores conspicuous. Anal legs broken. 

 A single female specimen, found under a stone in the Sapate. 

 This species appears to be closely allied to G. occidentalis, 

 Meinert (Proc. Amer. Phil. Soc. xxiii. p. 220), from San 

 Francisco ; but differs in the absence of teeth from the segments 

 of the maxillary feet, and in the absence of pores from the aoal 

 pleurae. 



