Boone, Crustacea, Cruise of ''Alva,'* 1931 93 



third articles are greatly reduced ; the flagellum small, extending less 

 than one-third the long diameter of the orbit. 



The buccal cavern is rectangular, nearly squarish, wider than long. 

 The ischium of the exognath is small, the related merus an elongated 

 rod, tapered distally. The ischium of the endognath is rectangular, 

 two-thirds as wide as long ; the related merus is wider than long, with 

 its distal margin oblique. The palp is stocky. The external surface 

 of the maxilliped is smooth. 



The female ehelipeds are of moderate proportions, rather slender, 

 the three-sided merus rather short, closely appressed to the carapace 

 and not extending beyond the margin of the carapace ; the carpus con- 

 vex and very granulose and channelled by an irregular sulcus; the 

 propodus scarcely longer than the carpus, rounded but not dilated on 

 the outer surface, rather compressed laterally. The external surfaces 

 are granulose and there are three longitudinal sulci on the outer sur- 

 face of the palm, separated by granulose ridges; the fingers are 

 sharply deflected, with the outer surfaces grooved, granulose proxi- 

 mally, the cutting edges with shallow teeth and moderate gape, the 

 tips rounded, spoon-shape, meeting. 



The ambulatories are not very large, but have the merus, carpus 

 and propodus quite wide, laterally compressed, with the dorsal surface 

 roughened with granules, like those of the carapace; the dactyli are 

 stout, cylindrical, almost as long as the related propodus, but scarcely 

 one-third as wide, with a stout curved horny tip, augmented on the 

 inferior lateral margin by two or three horny spinules in longitudinal 

 series, interspersed with stiff, solitary, long setae. 



Eeferences : Cancer rugatus Latreille, Collection du Museum, Paris. 

 Zozimus rugatus H. Milne Edwards, Hist. Nat. Crust, vol. I, p. 385, 



1834. 

 Zozimus canaliculatus Lucas, in Jacquinot's Voy. au Pole Sud et 



L'Oceanie "L'Astrolahe" et ''Zelee," Zool. Ill, Crust, p. 21, pi. 3, 



fig. 2, 1885. 

 Carpiloxanthus rugatus A. Milne Edwards, in Maillard's L'ile Ke- 



union. Annexe F, p. 3, 1862. 

 Carpilodes rugatus A. Milne Edwards, Nouv. Archiv. Mus. Hist. Nat., 



T. I, p. 230, pi. XII, figs. 3, 3b, 1865 ; ibid., T. IX, p. 180, 1873.— 



RiCHTERs, in Mobius Meeresf . Maurit., p. 146, 1880. — Miers, Zool. 



H. M. S. ''Alert," p. 517, p. 529, 1884.— Alcock, Journ. Asiatic 



Soc. Bengal, vol. 67, pt. 2, 84, 1898. — Laurie, R. D., Journ. Linn. 



