PARANAbPlDES AND KOONUNGA 



IT/ 



and the modification of the endopodites of the first two abdominal 

 appendages in the male to form a copulatory organ. 



A type of a new genus of this family was found by me in the 

 littoral zone of the Great Lake of Tasmania at an elevation of 

 .700 feet, and named Paranaspides lacustri*. 



This little shrimp (Fig. 78), which does not appear to grow 

 to more than an inch in length, is totally different in appearance 

 from Anaspides, being pale green and transparent, with a very 

 marked dorsal hump as in Jfysis, to which it bears a very 



FH;. 78. Paranaspides lacitstris, x 4. n\ n-, First and second antennae ; .I/'./, first 

 :ili(l(iiiiin;il segment ; </>, cpipodites or gills on the thoracic legs ; nnl, in;m<lil>le ; 

 /'/./, first ]i]c(i]iil ; 7', ti-lscni : '/'//. \ eighth five thoracic segment : f, uropocl, or 

 sixth ]ili-o|Hnl. 



striking superficial resemblance. It leads a more active swim- 

 ming life than Anaspides, and with this habit is correlated the 

 flexure of the body and the greater size of the tail-Ian and the 

 scale of the second antenna. The mandible is peculiar in beini; 

 furnished with a four-jointed biramous palp, while that of J//</x- 

 jiitfi'x is three -jointed and uniramous, and the first thoratic 

 appendage is provided with a setose biting lobe on the ante- 

 pen ultimate joint, thus more resembling a maxillipede. In ot her 

 respects it, agrees essentially in .structure with Aimx/i'iilf*. 



Fam. 2. Koonungldae. - -The sole representative of this 



family, K<ion H iui<i cursor, has been recently described by Mr. 

 0. A. Sayee, 1 of Melbourne University, from a small stream some 



1 Tlie Victorian .Y.///'/W/.s7, xxiv., 1907, p. 117. 



