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3. Protogastric and mesogastric region inflated, with a large, 



cup-shaped ridge (the ridge being broad and longitudinal 

 on the mesogastric region and anteriorly bifurcating into 

 two narrower, somewhat wavy ridges, directed towards 

 the orbits); across the cardiac and the branchial regions 

 there runs a thick, prominent, transverse ridge. Chelipeds 

 (of cf) much hairy; outer surface of jjalm with a thick 

 tuft of hairs, and without a longitudinal ridge near under 



border of palm U. nausithoc de Man 



Carapace without prominent ridges. Cheliped of cf with a 

 longitudinal ridge near under border of palm .... 4 



4. Angles of front rounded. Meropodites of walking legs (2^1 



and 3'> pair) about 3 times as long as broad .... U. glabra A. Milne-Edwards ^) 

 Angles of front acute. Meropodites of walking legs (2^ and 



3"^ pair) about 5 times as long as broad U. gracilipes White -). 



I. Vtica nausithoc de Man. 



1895. Utica nauslthoe de Man. Zool. Jahrb., Syst., Bd 9, p. 113, Bd 10, 1S98, pi. 28, f. 24. 

 .Stat. 131. Karakelang, Talaut Islands, i cf. ' 9- 



The cf is quite perfect and entirely agrees with de Man's diagnosis; the 9 is un- 

 fortunately much damaged, like de M.-vn's, as nearly all the limbs are wanting. There remains 

 only the left cheliped, which is very small and weak, without a longitudinal ridge on the palm, 

 and entirely covered by a short pubescence; the fingers are as long as the upper border of 

 the palm and finely toothed at the cutting margins. The velvety pubescence on the prominent 

 ridges of the carapace, which renders them so conspicuous in the case of the cf, is entirely 

 wanting in the 9^ though here the ridges themselves are quite as strongly developed. 



Both specimens attain about the size of the cf measured by de Man. The original specimens 

 came from Atjeh. Most likely the species is fluViatile, like the majority of its congeners. 



that his species might be identical with C. baibimana or U. sclosipis Haswell, but the descriptions of both A. Milne-Edwards and 

 Haswell (Cat. Austral. Crust., 1882, p. 101, pi. 2, f. 2) are too fragmentary and insufficient. In comparing the figures of Haswell and 

 of DE Man it may be observed that the dactyli in the last pair of legs are as long as the propodites in the case of U. sc/osipes^ but very 

 much shorter in U. borneensis. Besides, U. setosipes is a marine species, found at the sea-shore of Port Denison (Queensland); C bar- 

 iiecnsis most likely lives in freshwater. Of V. baibimana only the ^^^ of both other species here named only the 9 is known, so that the 

 chelipeds, that are widely ditTerent in the two sexes, do not offer us distinctive characters. 



1) Nouv. Arch. Mus. Paris, t. 9, 1873, P- 296, pi. 14, f. 3. llab. New Caledonia. 



2) Proc. Zool. Soc. London, 1847, P- 86; Adams and White, Voy. "Samarang", Crust., 1850, p. 53, pi. 13, f. 6; H. Mii.ne- 

 Edwards, Ann. Sc. Nat. (3) t. 20, 1853, p. 177, pi. 7, f. 4—40. Hab. Philippines. 



There remains one species, C. crassimana Haswell (Cat. Austral. Crust., 18S2, p. 102, pi. 2, f. 3) which I am unable of including 

 io this key. Epigastric ridges are not mentioned, and carapace and chelipeds are smooth, but there is a tuft of hair filling up the gap 

 of the fingers and a longitudinal ridge on the fi.\ed finger, not continued on the palm. The hairiness of the palm excludes the identity 

 of this species with U. glabra (of both species rf are known); besides, U. crassimana is a marine species, lik^ C. setosipes^ and found 

 at the same locality in Queensland; neither is Haswell's species identical with U. gracilipes, on account of the much shorter legs. 

 Haswell himself compares his species with U. barbimana, but the carapace of the Australian species is much broader (the width distinctly 

 exceeding the length), the chelae are larger and the fingers more curved than in U. barbimana. 



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