Species 0/* Micippa and Paramicippa. 7 



Micippa mascarenica. 

 Micippa philyra, Leach, Zool. Miscell. iii. p. 16 (1817) ; M.-Edwards, 

 Hist. Nat. Crust, i. p. 330 (1834) ; Guerin-Mene'ville, Icon. Crustacea, 

 pi. viii.fii's, fig. 1; A. M.-Edwards, N. Arch. Mus. Hist. Nat. viii. 

 p. 239, pi. xi. fig. 2 (1872) ; Richters, Hecapoda in Mobiua's Beitrage 

 zur Meeresfauna der Insel Mauritius und der Seychellen, p. 143 

 pi. xv. figs. 6, 7 (1880) ; Miers, Crust, in Zool. Coll. H.M.S. ' Alert,' 

 p. 198 (1884). 



? Micippa philyra, var. mascarenica, Kossmann, Malacostraca in Zool. 

 Ergebnisse einer Reise in die Kiistengeb. des Rothen Meeres, p. 7, 

 pi. iii. fig. 2 (1877) ; Lenz & Richters, Abhandl. Senck. Naturf. 

 Gesellsch. xii. p. 421 (1881). 



Micippa superciliosa, Haswell, Proc. Linn. Soc. N. S. Wales, iv. p. 440 

 pi. xxyi. fig. 2 (1880) ; Cat. Austr. Crust, p. 25 (1882), var. 



Paramicippa asperimanus, Miers, Crust, iu Zool. H.M.S. 'Alert,' p. 525 

 (1884), var. 



The carapace is suboblong, convex, and rounded behind, 

 deeply concave in front of the branchial regions, coarsely- 

 granulated on the dorsal surface ; the lateral margins are 

 armed with about six distant unequal spines or spinules ; the 

 orbits are completely denned, with a deep notch or fissure in 

 the superior margin, and behind this a smaller notch ; the 

 postocular spine is well developed ; the inferior margin has 

 two fissures defining the position of the basal antennal joint ; 

 the rostrum is vertically or nearly vertically deflexed, armed 

 at the distal extremity with four strong triangulate lobes or 

 teeth. The basal antennal joint is very greatly enlarged; its 

 distal margin is armed with several small spines or tubercles, 

 and with a stronger spine at the antero-external angle, which 

 constitutes the intraocular orbital spine ; the following (mobile) 

 joints are but little dilated. The chelipedes (in the adult male) 

 are rather slender; palm slightly compressed and little en- 

 larged, smooth and granulated; fingers meeting along their inner 

 margins when closed, or with a distinct intermarginal hiatus. 

 Hah. Indo-Pacific or Oriental region. 



An adult male in the collection of the British Museum 

 from the Mauritius (M. Robillard) has the following dimen- 

 sions : — Length of carapace to base of rostrum nearly 21 lines 

 (44 millim.) ; length of rostrum 9| lines (20 millim. ) ; length 

 of achelipede 25 lines (53 millim.) ; length of first ambulatory 

 leg 29^ lines (62 millim.). 



This form, which I, after Milne-Edwardsi and Guerin- 

 MdneVille, have hitherto designated M. philyra, Herbst, can- 

 not be regarded as the typical condition of that species, since 

 Dr. Gerstacker expressly notes that in Herbst's Cancer 

 philyra the second antennal joint is short and distally dilated ; 

 and Dr. Kossmann's name for it must be adopted, since he 

 distinctly figures it under the designation mascarenica. 



