378 . CHAS. CHILTON. 



[In the foregoing detailed account I have dealt with alt 

 the specimens which were first sent to me by Mr. Tiilyard. 

 After the MS. of the whole paper had been completed and 

 forwarded to Mr, Tiilyard for publication, he sent me 

 several other specimens ; and, as some of the impressions 

 on these, especially those on Block 235, show additional 

 points, I give a brief account of them here. I am leaving 

 the rest of the paper in its original form, although, as will 

 be seen, one or two of the statements with regard to the 

 head, antennae and uropods will require slight modification, 

 in view of the fuller information now available with regard 

 to them. 



Block 235, which had not been sent to me at first owing 

 to an oversight, is a particularly valuable one, as the 

 specimens on it not only confirm the statements already 

 made, but show additional points, especially with regard to 

 the uropods. On it there are impressions of four specimens,, 

 with the terminal portion of a fifth, and in three out of the 

 five the terminal segment of the pleon and the uropods are 

 more or less distinctly marked. The following detailed 

 descriptions will be sufficient : — 



Specimen 11, Fig. 10. (Block 235). 



Fig. 10. Phreatoicus wianamattensis, (No. 235a). 

 (Counterpart of No. 236a.) 



This specimen shows the whole body, with the antenna 

 fairly well marked at the anterior end, the joints of the 



