REPOET ON THE STOMATOPODA. 
91 
Squill a (Alima), empusa. 
Measurements. 
In inches and 
decimals. 
In thousandths 
of total length. 
i Measurements on middle line 
Rostrum, ........ 
•496 
153 
Erom base of rostrum to tip of labrum, .... 
•320 
101 
From tip of labrum to anterior edge of third thoracic somite, 
•512 
158 
Third thoracic somite, ...... 
•064 
20 
Fourth thoracic somite, ...... 
•064 
20 
Fifth thoracic somite, ...... 
•064 
20 
Sixth thoracic somite, ...... 
•080 
25 
Seventh thoracic somite, ...... 
•096 
30 
Eighth thoracic somite, ...... 
•112 
35 
First abdominal somite, ...... 
•160 
50 
Second abdominal somite, ...... 
■160 
50 
Third abdominal somite, ...... 
•160 
50 
Fourth abdominal somite, ...... 
•160 
50 
Fifth abdominal somite, ...... 
•048 
15 
Telson, ........ 
•720 
223 
Total length on middle line, ..... 
3-216 
1000 
Length of carapace on middle line, .... 
1-648 
411 
Width of carapace between bases of anterodateral spines, 
•704 
218 
Width of carapace between bases of postero-lateral spines, 
•736 
228 
Width of telson between submedian spines, .... 
•320 
99 
Width of telson (greatest), ...... 
•448 
139 
Length of abdomen including telson, ..... 
1-408 
438 
specimen, which is shown in Claus’s figure 34, has on the clactylus of the raptorial claw two 
marginal spines besides the terminal one, he derives the provisional specific name from 
this characteristic. 
The Challenger collections contain two specimens of the same larval type ; one from 
the Cape of Good Hope (PI. IX. figs. 1 and 2), a little older than Claus’s larva, and with 
three spines on the dactylus besides the terminal one, and 2 5 '3 9 mm. long ; and another 
from the Gulf of Penas, younger than Claus’s larva, with only one spine, and 1 7 '57 mm. 
long. The two specimens, which undoubtedly belong to a single species, differ very slightly 
from Claus’s larva, which may possibly be the young of a distinct species, although the 
differences are so very slight that it seems best to retain Claus’s specific name Alima 
bidens for them all. 
Alima bidens is characterised as follows : — The very short and narrow carapace, which 
has no median dorsal spine, makes with the dorsal rostrum only J- of the total 
length, and its deeply emarginated posterior edge exposes the four posterior thoracic 
somites. The long tip of the slender rostrum is in front of the end of the shaft of the 
first antenna, and the length of the rostrum is a little more than half the length of the 
carapace, measured on the middle line from its base. The antero-lateral spines of the 
carapace are unusually long and divergent; the tips of the long postero-laterals are opposite 
