278 



THETIS SCIENTIFIC RESULTS. 



last segment exhibits three spiniform denticles, the middle one 

 being the shortest. The outer rami of the uropods are longer 

 than the inner, and both have their distal borders armed with 

 four or five spinules. 



Total length of body ... ... ... ... 6 mm. 



Breadth ... ... ... ... ... ... 3 ,, 



Obtained off Crookhaven River and Wata Mooli. 



Second Pleopod of 



Cerceis trispinosa, Haswell. 



Fig. 37. 



C H I T O N O P S I S, gen. nov. 



Body ovate-oV)long, slightl}' convex mesially. The basal joints 

 of the first antenna;, cephalic process, epimera, and uropods are 

 more or less lamellate, and have their contiguous boi'dors adapted 

 to each other, the whole combined forming a thin dilated and 

 subcontinuous border. 



