534 



FLORENCE BUCHANAN. 



Locality. Total Number 



of Segments. 



16. Australian seas . 50| . 



Intercalated Half-segments. 



3 on right side between 49 and 50. 

 (but incomplete) 



No. 16 of the above list deserves especial mention. Un- 

 fortunately it is broken posteriorly, and so near to the critical 

 point that it is difficult to be quite certain of what one sees. 

 I have, however, represented what I saw, to the best of my 

 ability, in fig. 5. It will be seen, by reference thereto, that 

 the forty-ninth and fiftieth segments on the left side have 

 no dorsal setae nor branchiae, and that on the right side 

 between those two segments there are three other segments 

 (a, b, and c) intercalated. I think there is a fourth segment 

 intercalated on the right side, but of this I cannot be quite 

 certain, as I could only see it on the dorsal surface. At any 

 rate, the result is to make the posterior extremity of the body, 

 as much as there is of it, coil bodily to the left. 



Of the other thirty -three Amphinomes in the British 

 Museum collection, twenty-six beloag to the sub-genus Eury- 

 thoe, seven to the sub-genus Hermodice. Of these ten 

 (? eleven), nine Eurythoes and one (? two) Hermodices 

 present irregularities in segmentation, the nature of which 

 •will be seen from the following table : 



17 



18 



19 



20 



21 



