REPORT 0 N THE STOMATOPODA. 
107 
edges of the carapace are folded inwards, and the minute inner spine has appeared upon 
the ventral process of the uropod. The abdomen is now flat and wide and the lateral 
ed^es of the fifth somite are acute. 
O 
The single specimen of the oldest stage (No. 4) was so badly preserved that many 
points were obscure. It is shown in ventral view in PI. XIII. fig. 7. The abdomen 
is wide and flat, the lateral edges of the carapace are folded in, and the basal 
process of the uropod is as long as the telson, which is deeply angulated on the middle 
line (PI. XIII. fig. 8). The secondary single spine between the submedian and the 
intermediate is now much smaller than the latter, which has a minute spinule internal 
to its base. The raptorial claw is flat and oval as it is in the adult Coronis. 
The striking resemblance which Claus points out between the early stages of this 
larva and a young Alima larva are superficial, since it is a true Erichthus, with the 
ocular and antennary somites covered by the rostrum, the carapace folded downwards 
and inwards at the sides, the outer spine of the basal prolongation of the uropod longer 
than the inner, and only one instead of several secondary spines between the submedian 
and the intermediate spines of the telson. 
While there are numerous specific differences between it and the larva of Coronis 
excavatrix, a comparison of the various stages in the development of the two larvae 
will show their very close similarity, and there can be no doubt that this also is a 
Lysiosquilla, and it probably belongs to the subgenus Coronis also. 
Claus figures several advanced larvae which agree with this one in the depression of 
the hind body, the number and relative size of the marginal spines on the telson, the 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
No. 1. 
No. 2. 
No. 3. 
No. 4. 
Measurements on middle line : — 
Rostrum from tip to anterior edge of 
ocular somite, 
From anterior edge of ocular somite to 
tip of labrum, 
•80 
1-04 
1-25 
1-99 
192 
197 
193 
195 
•32 
•41 
•75 
77 
77 
73 
From tip of labrum to posterior edge of 
carapace, .... 
M2 
1-44 
2-50 
2-49 
269 
272 
385 
244 
From posterior edge of carapace to posterior 
edge of telson, 
1-92 
2-40 
2-74 
4-98 
462 
454 
422 
488 
Total length on middle line, 
4-16 
5-29 
6-49 
10-21 
1000 
1000 
1000 
1000 
Width of carapace between bases of pos- 
tero-lateral spines, 
Width of fourth abdominal somite, 
2T6 
1-76 
shape and character of the uropod, the width of the raptorial claw, the position of the 
postero-lateral spines of the carapace and other features, and as he has also been able 
to show that the dactylus of the raptorial claw of the older larvae is bordered by 
