RATHBUN— MARINE BRACHYURA 213 



The carapace in alcohol is either red, reddish-white, or red with a white band 

 at the extremity of each side ; chelipeds and legs red, with distal portion of dactylus 

 (above the horny tip) of each leg white. An exception is a small dark coloured 

 specimen, carapace dull greyish-green, under side still darker, chelipeds and legs yellowish- 

 brown. 



75. Liomera granosimana A. Milne Edwards (Plate 17, fig. 6). 



Liomera granosimana A. Milne Edwards, Nouv. Arch. Mus. Hist. Nat., Paris, i. 

 1866, p. 222, pi. 11, figs. 5, 5 a. 



Coetivy ; 1 $. C. 1. 10 mm., C. b. 15"3 mm. 



The carapace, while appearing smooth and polished to the naked eye, under the lens 

 shows distant punctse, and a fine pavement of flattened granulation. Certain of the 

 furrows are well marked ; that between first and second lateral lobes is continued 

 transversely to gastric region ; that between second and third lobes bends forward 

 to join the preceding furrow ; anterior part of mesogastric region well defined ; proto- 

 gastric lobes anteriorly with a longitudinal groove ; it joins the submarginal groove which 

 follows the line of the front, orbits and first lateral lobe ; this lobe shows a faint trace 

 of subdivision into two. 



Legs thick, flattened ; merus-joints with anterior edges roughened with fine, blunt 

 denticulations. 



76. Lioxantho latifrons, sp. no v. (Plate 16, figs. 1, 2). 

 Salomon ; 1 ?. 



Not a typical Lioxantho, because the fronto-orbital breadth is more than half as 

 great as width of carapace. Carapace flat in posterior half, convex anteriorly, smooth, 

 punctate. Regions (save the hepatic) faintly indicated, fronto-orbital region marked 

 off by a groove ; a groove passes inward from the notch between second and third lobes 

 of antero-lateral margin, two-thirds of the distance to the gastric region. Antero-lateral 

 margin divided into four lobes, the first two slightly marked and almost coalescent, the 

 third and fourth projecting a little as small, blunt teeth. 



Front bilobed, lobes separated by a broad emargination, and fused with the supra- 

 orbital angles. Width of front a little more than one-third width of carapace. 



Chelipeds nearly equal in female, obscurely and finely granulate ; an obtuse sub- 

 terminal tooth on arm ; wrist bluntly angled within ; a shallow longitudinal groove on 

 hand just below upper margin ; fingers fun-owed and pointed, as long as upper margin 

 of palm. Legs smooth ; dactylus and distal half of propodus furrowed. 



Abdomen of female from third to seventh segments triangular. 



Dimensions of ? in mm. : C. 1. 4"8, C. b. 79, F. orb. b. 4-8, F. b. 27, R. Ch. 1. 9'5, 

 L. Ch. 1. 9-9. 



This species is very much like L. punctata (Milne Edwards)*, from which it is 

 distinguished at a glance by the greater width across front and orbits ; the carapace 

 is also smoother and more shining. 



* Alcock (3), p. 91. 



