CKUSTACKA — WIIITKLKfJOE. 



261 



curved Hlament at the distal tliird of the inner margin, and the 

 apex hears a sei'ies of .short pectinate spines ; a few are suljapical 

 and arise from a point opjjosite the marginal filament. The 

 second, third, and fourth joints of the palp are provided with 

 setie tippe(J lobes, the fifth joint is subcylindrical and terminates 

 in a tuft of .setie. 



The first two pairs of pleopods have a few spines on the interno- 

 distal angle of the peduncle ; the inner ramus of the first is sub- 

 triangular, with inner margin straight ; outer ramus obovate and 

 rather narrow at the base ; outer ramus of second pair similar to 

 that of tlie first, the inner is longer and slightly broader than the 

 first. With a view of describing the stylets I examined nearly 

 the whole of the specimens without finding a single fully 

 developed male. I considered this rather strange and determined 

 to make further examination. After dissecting out the inner 

 rami from many specimens 

 I found several immature 

 males, some with only the 

 slightest trace of stylets, 

 and one with the stylets 

 almost fully formed, but 

 these could not be func- 

 tional until after casting 

 the integument, inasmuch 

 as they are completely 

 inclosed in the lamina of 

 the inner rami (see fig. 29). 

 Outer ramus of fifth pair 

 of pleopods with two equal 

 tubercles at the apex, and 

 one on the inner distal 

 extremity of the suture 

 with a small accessory 

 tubercle as its base ; the 

 inner distal margin, as well 

 as the tubercles, are closely 

 covered with rasp-like den- 

 ticles. Outer ramus of 

 uropods nearly hidden when 

 closed. 



Length of largest male 



Breadth ,, ,, 



Length of female 



Breadth ,, .. 



The specimens were obtained in Newcastle Bight, off Shoalhaven 

 River, in Jervis Bay, and off Crookhaven River, in 11 to 27 

 fathoms. 



Second Pleopod 

 Fig. 29. 





... 





15 mm. 







6 „ 



12 „ 



5 „ 



