CANCROIDEA. 



posterior legs is not naked on its lateral surface; the carpus and hand 

 have an uneven surface; the margin just posterior to the orbits is 

 very thick ; and the antero-lateral region is crossed by two lines 

 slightly raised. These lines last alluded to, run from the emargina- 

 tions separating the lobes of the margin, and pass inward and a 

 little forward with a curve; the anterior is the front margin of areo- 

 lets 2 L, 3 L united, and the posterior, the same of 5 L. Part of the 

 outline of 2 M is distinct. The fingers of the small hand are quite 

 long and slender. The third joint of the outer maxillipeds is shorter 

 than wide. The front as seen in a vertical view is but very slightly 

 sinuous. 



In the X. Gaudichaudii, according to Milne Edwards, the distance 

 between the orbits is very small ; and in his figure (D'Orbigny's S. A. 

 Crust., pi. 5, fig. 4), the distance is about two-ninths of the whole 

 breadth; while in the species here described it is nearly one-third. 

 From the X. punctatm it differs in the hands not being smooth. 



XANTHO MINOR. 



X. parvulo affinis. Carapax antice areolatus, areolis leviter elevatis 

 '2M, 3M, 5L, QL postice circumscriptis, 2 M cum rugd transversim 

 divisd; fronte fere recto, leviter emarginato; margine antero-laterali 

 tenui, 4-dentato, dentibus tribus post ids subtriangulat.is. Pedes antici 

 mediocres, carpo manuque supra paulo granulosis, manu extus leviter 

 granulato-costatd et supra sulcatd, digito mobili cum dente magno 

 basali non armato. Pedes 8 postici sparsim pubescentes. 



Near X. parvulus. Carapax anteriorly areolate, areolets slightly 

 raised, 2 M, 3 M, 5 L, 6 L circumscribed behind ; antero-lateral mar- 

 gin thin, four-toothed, three posterior teeth subtriangular. Ante- 

 rior feet of moderate size, subequal, carpus and hand above slightly 

 granulous, hand exteriorly faint granulato-costate, and above sul- 

 cate, moveable finger not armed with a large basal tooth. Eight 

 posterior feet sparsely pubescent. 



Plate 8, fig. 7, female (with eggs), enlarged four diameters. 



Probably from Madeira; possibly the Cape Verdes. 



43 



