184 SPOLIA ZEYLANIGA. 
The rostrum is triangular, and is separated from the orbits by 
deep depressions. The shape of the triangle is not constant, and 
varies between the type figured by Coutiére as malensis and that of 
stylirostris. The rostrum does not reach the end of the first an- 
tennular article. The first antennular article is slightly longer than 
the second and twice as long as the third. The antennular scale 
reaches to the end of the first article. The antennal penduncle and 
scale are about equal, and are slightly longer than the antennular 
peduncle. 
The dimensions of specimen A are as follows :— 
a = 10:0 mm. b§ = 3°5 mm. 
OY 92 pb min. DY = 4-3 mm: 
02 — 2p mm on ¢ = 17 -0imunr 
Do ==) 2 MT. e! = 0 mm: 
G2 — 3 20 MT. é* = 6-D mm: 
G26 Imm 

The large claw is of the “edwardsi” type, and this form 
undoubtedly belongs to that group of species. 
The second péreiopod calls for no further comment. The follow- 
ing are the dimensions in specimen A :— 
i = 4455; 643 | ct = 693 ; 528 
m = 4884; 561 co = 1254; 544 
ce! = 2838 ; 528 p = 2376; 627 
c? = 1848; 528 d = 1254; 247 
C7 — 120; 028 

The third pereiopod has about seven spines on the propodite. 
The propodite is richly clothed with sete. The dactylopodite is 
long and curved. Dimensions :— 
4 S= 1746 «1653 p = 4092; 528 
m = 5280; 726 d. = 1518; 231 
c = 3184; 627 
General Distribution.—Indo-Pacific. 
| 
ALPHEUS AUDOUINI, Coutiére. 
(Plate VII., Fig. 5.) 
Alpheus edwardsi, Coutiére (not audowni). Bull. Soc. Ent. 
France, 1898. 
Alpheus audowim, Coutiére. Fauna of Mald. and Lacc., 1906. 
Five specimens, from the Pearl Banks; February, 1911. 
This form is very similar to A. edwardsi (audouini), but differs 
from it in the form of the palmar projections of the large claw. In 
A. edwardsi they are spinous and in the present species rounded. 
This species, although related to A. strenuus, differs from it by 
well-marked characters. The second antennular article is only one 
and a half times as long as the third, 
