MAIOIDEA. 99 



narum externarum sub rostro partim excavates. Psdes longi pare 

 secundo sesquies longiore quam carapax, toti tenues, fere cylindrici. 



Nearly round, somewhat armed; beak small, furcate, not lamellar. 

 Eyes very long, retractile, orbits somewhat obliquely transverse; 

 outer posterior spine long, prseorbital small. Outer antennae remote 

 from beak, long, first joint with two spinous processes at apex, the 

 outermost long. Inner antennary cavity extends beneath the beak. 

 Feet long, second pair one and a half times length of body, all quite 

 slender, nearly cylindrical. 



This genus is near Mithrax, but has the long legs and something of 

 the habit of Camposcia. The eyes have quite long peduncles, as in 

 Camposcia, but fold back into distinct orbits, which are nearly trans- 

 verse. The buccal area is much wider in front than behind. The 

 third joint of the outer maxillipeds is about as long as broad, and the 

 next joint is articulated with its inner angle. 



CTCLAX PERRYI. 



Carapax paulo oblongus, convexus, parce pustulates, rostri cornubus sub- 

 conicis, acutis, margine orbitce superiore tri-spinoso, spind anteriore 

 longiore et reflexd, spind prceorbitali parvuld, post-orbitali crassius- 

 culd; marginibus carapacis antero-lateralibus 5-spinulosis, spinulis 

 remoti#, anteriore duplice; margine postico 2-spinuloso. Antennae 

 externce dimidio carapacis lonyiores, pilosaz. Psdes carapace valde 

 longiores, 8 posticis sparsim pilosis, tarso infra paulo piloso. 



Nearly orbicular, slightly oblong, convex, sparingly pustulate ; beak 

 short, horns subconical acute, superior margin of orbit with three 

 spines, the anterior longest and reflexed, praeorbital spine small, 

 post-orbital, rather stout, and transverse in position; antero-lateral 

 margins of carapax with five rather distant spinules, the anterior 

 one double; also two on the postero-lateral margin. Outer antennas 

 longer than half the carapax, hairy. Feet much longer than cara- 

 pax, eight posterior sparsely pilose, tarsus somewhat hairy within. 



Plate 2, fig. 5 a, animal, enlarged ; b, under view of head. 



