124 CARCINOLOGICAL STUDIES. 



their terminal joint beyond the scale of the outer antennae ; 

 their penultimate joint is about half as long as the ter- 

 minal one , and the latter is armed at its distal end with 

 four or five small spinules. 



The legs of the first pair extend to the distal end of 

 the antennal scale. The wrist is short, conical, deeply 

 excavated at its distal extremity and covered on its upper 

 surface with a few microscopical spinules. The hands are 

 nearly twice as long as the wrist , the palm slightly longer 

 than the carpus, subterete and rounded, the fingers much 

 shorter than the palm. 



The slender legs of the second pair extend a little beyond 

 the antennal scale. The carpus is seven-articulate , the 

 joints presenting at first sight almost the same length. 

 The first or proximal joint, however, is slightly longer than 

 the second , the second a little longer than the third ; the 

 third, fourth, fifth and sixth are equal in length , the terminal 

 joint , finally , is again a little longer and as long as the 

 first. The hand is about as long as the two terminal joints 

 of the wrist together, and the palm longer than the fingers. 



The three posterior pairs of legs have the ordinary form. 

 The third pair is as long as the second , the following 

 are shorter, the legs of the fifth pair extending only to 

 the distal extremity of the carpus of the first pair. 



The larger specimen measures about 40 mm. from the 

 tip of the rostrum to the extremity of the terminal postab- 

 dominal segment. 



41. Penaeus Macleayi Haswell. 



Penaeus Macleayi, Haswell, Catalogue of Australian Crustacea, 

 1882, p. 201. 



Two specimens from Sidney. 



Whilst this species attains a length of five inches, these two 

 specimens measure scarcely three inches , and I ascribe to this 

 smaller size the fact that the legs are comparatively a little 

 shorter than in the type. According to Haswell , the legs 



Notes frora the Leyden Museum, "Vol. XII. 



