13 



is 0,7 mm. long, carpus 0,86 mm., chela 0,74 mm. (palm 0,42 mm., fingers 0,32 mm.); chela 

 6-times as long as wide. The legs of the 3 rd pair (Fig. 7 ƒ ) reach a little beyond the eye-peduncles ; 

 merus 0,8 mm. long, carpus 1,32 mm., chela 0,93 mm. (palm 0,57 mm., fingers 0,36 mm.); 

 chela 8— 9-times as long as wide. These numbers show that the fingers are relatively borter in 

 the 3 rd than in the 2 nd legs and also relatively shorter in the 2 nd than in the i st and that the 

 chelae appear gradually of a more slender shape from the i st to the 3 ld . 



The peraeopods of the 4 th pair (Fig. 7 g) reach to the anterior border of the carapace ; their 

 merus is in the male 0,72 mm. long and 0,11 mm. broad, ó'^-times as long as wide; carpus 

 0,6 mm. long, 0,094 mm - broad; propodus 0,5 mm. long, 0,084 mm - wide, carpus and pro- 

 podus also 6-times as long as wide; dactylus long 0,26 mm., nearly half as long as the pro- 

 podus, 0,05 mm. wide at base. The peraeopods (Fig. 7/1) of the 5* pair, finally, reach a little 

 less forward than those of the 4" 1 , but show exactly the same measurements. 



The two branches of the petasma are not yet united and still little developed ; they 

 are 0,3 mm. long, 3- or 4-lobate, with rounded lobes ; the protopod of the pleopods of the 

 i st pair is 0,8 mm. long, the exopod twice as long. 



This rare Crustacean, that according to Xobili, Calman and Balss belongs to the 

 Sergestidae, was already known from the Red Sea (Coast of Erythraea), the Cargados Carajos, 

 the Maldives and Torres Straits. 



