150 CRUSTACEANS OF THE 



extend only to the end of the scales. The breadth of the 

 propodi of the 3rd pair of legs of the adult male measures 

 i/j- of their length, of the females ^/,3 — ^/jg ; the dactyli 

 are very slightly longer than ^'4 the length 

 of the propodi, in the very young male from Sintang 

 they measure almost '/j. The breadth of the propodi of 

 the 5th pair (Fig. 2m) is Vgs — V24 their length, and the 

 dactyli measure about ^j. the length of the 

 propodi. 



This species, that may belong to Ortmann's subgenus 

 Parapalaemon , the palm of the 2nd pair of legs being 

 distinctly wider than the end of the carpus and the 

 fingers being armed with several minute teeth , seems to 

 differ from all other species. It differs indeed from the 

 allied species 1^. by the smaller number of large 

 eggs , carried by the female , 2". by the characters of the 

 rostrum, four teeth standing on the cephalo- 

 thorax, 3". by the second pair of legs being smooth, 

 and provided with scattered hairs and 4". by the three, 

 four or five minute obtuse teeth with which the fingers 

 are armed. 



The rostrum of Pal, [Parap.) Horstii de M. from Ce- 

 lebes bears some resemblance to that of this new species , 

 but the second pair of legs are roughened by thorny points , 

 the fingers are shorter and the ambulatory legs are more 

 robust. 



The eggs of Pal. {Macrohr.) bariensis de M. from Flores 

 are very numerous and small, the carpus of the second pair 

 of legs is slightly shorter than the merus and appears less 

 slender, the hand finally is considerably wider. Pal. {Ma- 

 crohr.) lampropus de M. from Celebes is another allied 

 species, but the rostrum is armed above with 16 or 17 

 teeth , which are placed closer together. The chela of the 

 larger leg has a different form, the palm being broader 

 and its inner margin making almost a straight line 

 with the inner margin of the immobile finger. The fingers 

 of the larger leg are shorter and armed with more 



Notes from the l-icyden ]VIu.seu.iii , Vol. XX. 



