SO AUSTltALIAN MALACOSTRACA. 



G-enus Parathoe, Miers. 



Carapace triangular, rounded behind. Front very .small and 

 narrow, truncated or notched. Basal antennal joint narrow, 

 longer than broad, and without any spine at its distal end. 

 Anterior legs with the palm dilated and the fingers arcuate, meeting 

 at the tips. Ambulatory legs not dilated and compressed. [M.] 



48. Parathoe rotundata. 



Parathoe rotundata, Miers, Ann. and Mag., Nat. Hist. (5) iv., 

 19, p. 10, pi. v., fig. 2. 



Carapace sub-triangular, rounded behind and indistinctly 

 tuberculated ; the gastric and cardiac regions distinctly defined 

 and nearly smooth ; four or five indistinct rounded elevations on 

 the branchial regions, and two tubercles on the posterior margin. 

 Kostrum very small, little prominent and notched at its extremity. 

 Anterior legs in the male robust ; arm and wrist smooth ; palm 

 enlarged, smooth and compressed ; fingers arcuate, and meeting 

 only at the tips, which are excavated. On the inner margin of 

 the mobile finger near its base, is a small tubercle. Ambulatory 

 legs robust, with the merus joint strongly tuberculated. The 

 rather narrow basal antennal joint unarmed at its distal end. 

 Post-abdominal segments smooth and distinct. [J/.] 



Port Curtis (H.M.S. " Herald"). Found also at Fiji. 



Family IV. PARTHEXOPIDjE. 



Eyes usually retractile within the small circular and well-defined 

 orbits ; the inferior wall of the orbit is cotinued to within a very 

 short distance of the front. The antennae are very slender, the 

 basal joint does not as in the Periceridco constitute a great part 

 of the inferior orbital margin, but is very small, and usually docs 

 not reach to the front, and with the next joint occupies the narow 

 hiatus intervening between the front and the inner orbital angle. 



Sub- Family Pavthcnopiiice. 



Carapace equilaterally or transversely triangular or elliptical. 

 Rostrum simple. A strongly marked depression separating the 

 branchial from the cardiac and gastric regions. Anterior legs 

 greatly developed with the palm trigonous ; fingers acute. [JLT.] 



