AUSTRALIAN MALACOSTEACA. 271 



the propodos ovate, the palm undefined. Posterior gnathopoda 

 very large, carpus produced at its inferior and distal angle into 

 a long, curved, compressed, pointed process, which nearly equals 

 the propodos in length ; propodos large, thrice as long as broad, 

 convex dorsally, concave ventrally, the distal extremity armed 

 with an acute tooth near the insertion of the dactylos ; dactylos 

 about two-thirds of the length of the propodos. Three anterior 

 pairs of pereiopoda very short ; two posterior pairs much longer. 

 Port Jackson. 



Sub- Mm ihj Goroph iides. 

 Cephalon and pereion broader than deep. . Inferior antennas 

 sub-pediform, longer and more powerful than the superior. 

 Coxas small. Posterior pair of pleopoda simply sub-foliaceous, 

 or styliform, not armed with hook-like spines. Telson squami- 

 form, unarmed. \_S. B.~\ 



Genus Cyrtophittm. Dana. 



Pereion narrow- elliptical. Pleon inflexed beneath the pereion. 

 Cephalon sub-quadrate. Eyes situated at the anterior angles and 

 a little prominent. Antennas pediform, with very short flagella 

 or none ; the inferior pair a little the longer. Gi-nathopoda sub- 

 chelate ; second pair much the stouter. Posterior pair of 

 pleopoda minute, simple, partly concealed by the telson ; ante- 

 penultimate and penultimate pairs with the rami unequal, not 

 specially covered on the outer side. \Dana.~] 



472. Cyrtophium parasiticum. 



CijrtopMum parasiticum, Haswell, 1. c, p. 271, pi. xii., fig 1. 



Superior antennas exceeding the body in length, hairy ; the 

 flagellum shorter than the last segment of the peduncle. 

 Inferior antennas nearly once and a half the length of the body, 

 armed with long hairs ; third and fourth segments of the 

 peduncle subequal ; fifth shorter. Anterior gnathopoda hairy ; 

 propodos shorter than the carpus, ovate. Posterior gnathopoda 

 very large ; propodos as long as the cephalon and the first three 

 segments of the pereion ; palmar border with a shallow excava- 

 tion near the middle of its length, armed distally with fine 

 denticles. Pereiopoda subequal. Protopodite of the fourth 

 pleopoda stout ; inner ramus longer and stouter than the outer, 



