344 Mr. H. J. Carter's Contributions to our 



yond the level of the hinder edge of the choanae. Head 

 moderate ; snout broad, rounded, with distinct canthus ros- 

 tralis ; loreal region deeply concave ; nostril equally distant 

 from the eye and the border of the mouth ; interorbital space 

 as broad as the upper eyelid ; tympanum three fifths the dia- 

 meter of the eye, separated from the orbit by an interspace 

 equal to its diameter. Fingers and toes with swollen tips 

 and very strong subarticular tubercles ; first finger extending 

 beyond second ; toes almost entirely webbed, the swollen tips 

 alone being free ; a single oval, blunt, metatarsal tubercle. 

 The hind limb being carried forwards along the body, the 

 tibio-tarsal articulation reaches the tip of the mouth. Upper 

 surfaces covered with small pustules ; a strong fold from the 

 eye to the shoulder ; a glandular lateral fold. Upper surfaces 

 olive, with rather indistinct blackish spots ; flanks blackish- 

 and-whitish marbled; hinder side of thighs blackish, marbled 

 with grey ; lower surfaces whitish, the throat and breast soiled 

 with grey. From snout to vent 106 millim. 

 One female specimen from Ventanas. 



Hypopachus oxyrrlunus, sp. n. 



Snout pointed, very prominent, about once and a half the 

 diameter of the eye. Fore limb much longer than its distance 

 from the tip of the snout ; third finger much elongate ; toes 

 short, with a rudiment of web ; tips of fingers and toes blunt ; 

 subarticular tubercles distinct ; two very prominent, oval, 

 compressed, shovel-shaped metatarsal tubercles, the inner 

 very large. The hind limb being carried forwards along the 

 body, the tibio-tarsal articulation reaches between the shoulder 

 and the eye. Skin nearly smooth; a fold across the head, 

 behind the eyes. Vinaceous above, blackish on the sides, the 

 limits between the two colours well defined ; a black oblique 

 band across the thigh, and another across the leg ; hinder side 

 of thighs marbled with blackish ; lower surfaces dirty white, 

 more or less marbled with brownish. Male with a subgular 

 vocal sac. From snout to vent 28 millim. 



Two male specimens from Presidio. 



XLVI. — Contributions to our Knowledge of the Spongida. 



Pachytragida. By H. J. Carter, F.R.S. &c. 



[Plates XIV., XV.] 



The Pachytragida or third family of my Holorhaphidota 

 designated as sponges " more or less corticate, with a can- 



