AUSTRALIAN MALACOSTRACA. 305 



thoracic limbs with, the carpus somewhat produced superiorly 

 and distally ; propodos ovate, dilated proximally ; the palm 

 armed with a row of five stout spinules. Second pair rather 

 smaller than the first and of similar shape ; palm armed with six 

 ciliated spinules. Third pair smaller than the second. Caudal 

 scales sub-circular ; ramus of caudal appendages ovate, sub-acute, 

 hairy. Terminal segment rounded. Length about % in. 

 Port Jackson. 



525. Paranthura (?) crassicornis. 



Paranthura crassicornis, Haswell, 1. c, p. 478, pi. xviii., fig. 5. 



Eyes very small. Internal antennae very short, about half 

 the length of the head ; flagellum with several short articuli. 

 External antenna? twice as long as the internal pair ; flagellum 

 thick, twice as long as the peduncle, composed of numerous 

 articuli. First pair of thoracic limbs larger than the others ; 

 propodos ovate. Second and third pairs rather smaller than the 

 first, and of similar shape. Following pairs sub-equal, with the 

 dactylos long and falciform. Length iV in. 



Port Jackson. 



Differs from Paranthura in the form of the outer antenna?. 



Grenus Haliophasma, Haswell. 



Body sub-cylindrical, depressed, thoracic segments sub-equal. 

 Inner antenna? much shorter than the outer, with multi-articulate 

 flagellum. Mandibles with a palp. Maxillipedes small, sub- 

 operculiform. First pair of thoracic limbs large, sub-chelate, the 

 rest simple or the second imperfectly sub-chelate. Last pair of 

 abdominal appendages broad, operculiform, biramous the inner 

 ramus Particulate, the outer scale-like. Terminal segment 

 squamiform. 



Differs from Paranthura in the possession of a well-developed 

 flagella in both pairs of antenna? or the outer pair only, and in the 

 form of the second and third pairs of pereiopoda. 



526. Haliophasma purpurea. 



Haliophasma purpurea, Haswell, 1. c, p. 476, pi. xviii., fig. 3.* 

 Head and first thoracic segment flattened ; last thoracic seg- 

 ment shorter than the others. Inner antenna? as long as the 



*Not fig. 2, as occurs in the "Explanation of the Plates" in the paper 

 referred to. Fig. 2 should be II. maculata. 



T 



