130 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
I am now able to describe two new species of this interesting 
genus. 
78. Doria BREVITARSIS, n. sp. (Pl. IX. figs. 1-3.) 
Four specimens were collected in the Mergui Archipelago. 
This new species may be easily distinguished by the following 
characters :—From Forskal’s D. sulcata, by the surface of the 
cephalothorax being differently grooved, by the carpopodite of the 
chelipedes being armed with a small acute spine at its internal 
angle, by the meropodites of the ambulatory legs being more 
enlarged, by comparatively much shorter dactylopodites, which 
are shorter than the propodites, and by many other characters. 
It differs also from Dotilla myctiroides, M.-Hidw., from the coast 
of Malabar, by the upper surface of the cephalothorax being also 
sulecate and by the short, not slender chelipedes. D. fenestrata 
may be distinguished from it at first sight by the remarkable 
“¢ympana ”’ which occur on the sternum. 
I will now compare our new species with D. sulcata, two fine 
specimens of which, collected in the Red Sea, were kindly sent 
me by the Curators of the Leyden Museum. | 
In D. suleata, Forsk. (conf. Milne-Edwards, Regne Animal 
de Cuvier, pl. xviii. fig. 3), the frontal groove is continued back- 
ward only to the mesogastric region, where a prominence or 
tubercle is found. Before this prominence it divides into two 
branches, each of which is immediately again dichotomously 
divided into two grooves, one of which is directed obliquely 
forwards towards the external orbital angles, and the other 
proceeds obliquely backwards towards the bases of the last pair - 
of ambulatory legs. A five-rayed star of grooves is thus formed 
on the anterior and antero-lateral portions of the cephalothorax, 
one of the rays of which, the frontal groove, is placed in the 
middle line of the carapace. The two posterior rays or grooves 
are longer than the other three, and are accompanied on each 
side by a supplementary groove; the external one (a) proceeds 
forwards at a little distance from and parallel to the lateral 
margin of the carapace, dividing into two short grooves at its 
anterior end ; the internal one (0) is directed obliquely forwards 
from the base of the last pair of legs to the urogastric portion 
of the gastric region. The cardiac and intestinal regions of the 
cephalothorax, bordered on each side by the oblique groove (6), 
