594 IV AR tragArdh 



hairs; anal aperture wider and more rounded, situated close to the posterior 

 margin and as far from the genital aperture as its own length. 



Legs. Legs I and II (fig. 79) with clavate femora with thin ventral edge 

 and two stout dorsal bristles in the distal ^/a; genu short, curved, with stout 

 dorsal bristle, one dorsal perpendicular tactile hair, one ventral bristle and one 

 hair exteriorly. Tibia clavate, widening from a very slender base towards the 

 top where it is widest and coalesced, apparently without any movable joint, 

 with the tarsus which is almost pyriform in outline and has numerous but 

 short hairs; claws stout. 



Legs II (fig. 78) and IV with flattened femora, with ventral narrow thin 

 blade; tibia and tarsus of the same shape as in legs I and II but longer. 



Loc: Described from dry specimens collected in the following places: 

 Juan Fernandez, Masatierra, Rabanal, c. 300 m. s. m. among dry leaves 

 in dense forest, Aug. 1917; in the bottom of the Rabanal Quebrada, c. 100 

 m. s. m. among dry leaves, Aug. 1917, no. 775; Puerto Ingles c. 400 m. s. m. 

 among dry leaves in dense forest, Aug. 1917, nos. 789, 790; below Co. Dama- 

 juana near Corrales de Molina c. 300 m. s. m. among dry leaves in dense 

 forest, Aug. 1917, no. 739, on the Centinela ridge, c. 630 m. s. m. under ferns, 

 Aug. 1917, no. 788. 



14. Cepheus corpulentus n. sp. — Fig. 83 — 86. 



Length 710 {x, width 500 %; length of proterosoma 230 \x. 



Colour dirty greyish brown. 



Texture. 



Propodosoma (fig. 84) of the same general shape as in C. crinitus, as 

 are also the lamellai, which are, however, united by a narrow translamella. 

 The interlamellar hairs are short but stout and slightly serrated as the hairs 

 of the hysterosoma. Lamellar hairs short, pointed, curved inwards and inserted 

 on the dorsal edge of the lamellae at the base of the cusps which are of the 

 same shape as in C. crinitus. Rostral hairs of the same size as the lamellar 

 hairs, inserted in front of the translamella. Rostrum blunt, with a median 

 rounded depressed area. 



The semispherical projections are larger than in C. crinitus and in the 

 posterior part there are about 12 circular depressed areas. 



Pseudostigmata large, tube-shaped, fused with the base of the lamellae. 

 Pseudostigmatic organs slightly s-curved, with lanceolate heads, covered with 

 fine raised points. 



Mouthparts. Hypostome (fig. 83) of the same general shape as in C. 

 crinitus but comparatively shorter and broader. 



Hysterosoma (fig. 85) with well developed shoulder, sloping gently 

 downwards towards the posterior margin, where there are about 30 circular 

 areae porosae. There are two longitudinal rows of short but stout and slightly 

 serrated blunt bristles, one median row of 5 pairs and one lateral row of 4 

 pairs; besides there is one shoulder bristle, three pairs at the posterior margin 

 and one pair further ventrally near the median line. 



