4° 

 Stat. 50. Labuan Badjo, west coast of Flores. 1 cf . 



This is one of the broad-fronted species, like the preceding. With U. chlorophthalma 

 (H. Milne-Edwards), U. latreilhi of the same author and U. triangularis (A. Milne-Edwards) 

 it forms a distinct sub-group within the genus. The latter species is undoubtedly distinct, as 

 shown by de Man l ) but with respect to the other species, it is not unlikely, that they are all 

 identical. C\ latreillei is the least known, but according to de Man 2 ) it is distinguished by 

 broader meropodites, these being in the last pair of legs twice as long as broad. According to 

 Pesta (l.c.) this U. latreillei should probably be the young stage of U. gaimardi, as Ortmann 3 ) 

 has already suggested. 



Whether U. chlorophthalma is really distinct, remains in my opinion uncertain. The 

 larger hand of the cf is higher and shorter than in U. gaimardi é ), and the fingers are only 

 slightly longer than the palm, which latter is as long as high. But it is well known, that these 

 proportions are variable among individuals of the same species; besides, in my specimen, which 

 agrees wholly with the Leiden Museum specimens, determined by de Man himself, and with 

 that of Pesta, the large chela resembles in its dimensions U. chlorophthalma, as it is only 

 2,5 times, not 3 times as long as high, but the fingers are nearly exactly as long as the palm, 

 and the latter is longer than high, which agrees better with U. gaimardi. 



The pretty colour pattern of this species has been well represented by Pesta. The rosy 

 hue of the larger hand is characteristic and seems to remain even after prolonged preservation 

 in alcohol. In my specimen it is remarkable, that the walking legs on the left exhibit nearly 

 the same colour (rosy-yellow) as the large hand, which is on this side, but on the right the 

 small chela, the second and fourth walking legs are dark violet, like the general colour of the 

 carapace, whereas the first and third walking legs are coloured like those on the left. 



I only once find mentioned 5 ) in the literature, that the outer sur face of the palm 

 of the large chela bears, near the base of the fixed finger a small, we 11- 

 defined, s hort- h air y depression, both in U. gaimardi and in U. chlorophthalma ; of 

 the latter species I examined the cT, mentioned by de Man (l.c, 1891), in the Leiden Museum. 



Subfam. Mictyrinae. 



The genus Mictyris has often been regarded as constituting a distinct family of its 

 own, whereas other closely related genera where included in another family or subfamily : 

 Dotillidae or Scopimerinae. Though the genus is standing somewhat apart there is no need 

 for such an isolation of Mictyris. 



Among the other genera Ilyoplax Stimpson 6 ) is undoubtedly the least known ; its single 



1) Journ. Linn. Soc. London, v. 22, 1888, p. 119, pi. 8, f. 8 — 11. 



2) Notes Leyden Mus., v. 13, 1891, p. 41. 



3) Zool. Jahrb., Syst., Bd 7, 1894, p. 752. 



4) De Man, 1. c, 1891, p. 42. See also Abhandl. Senckenb. Gesellsch., Bd 25, Heft 3, 1902, p. 484, pi. 19, f. 4. 



5) Miers. Rep. "Challenger" Brachyma, 1886, p. 245, note. 



6) Proc. Acad. Nat. Sc. Philadelphia, 1S5S, p. 98. Smithson. Inst., Miscell. Coll., v. 49, 1907, p. 100. 



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