186 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
same structure. The interregional grooves are rather well 
indicated, and the whole upper surface is punctate and marked, 
especially anteriorly, with numerous transverse, piliferous rugo- 
sities. The front isa little broader than half the distance between 
the extraorbital teeth, is somewhat granulated, nearly vertically 
deflexed downwards, and presents a horizontally prominent an- 
terior margin. In S. sinensis this margin is widely emarginate 
in the middle, and the lateral lobes are rounded; in this new 
Species the median sinus is equally deep, but a little narrower, 
and the lateral lobes are sinuous or slightly emarginate. The 
four epigastric (or postfrontal) lobes are as prominent as in 
S. stnensis, and separated from one another by rather deep 
incisions; the internal lobes are a little broader than the 
external, and do not hide the frontal margin when the carapace 
is viewed from above. The lateral margins are perfectly parallel 
to one another, as in S. sinensis. A small second (epibranchial) 
tooth is present behind the extraorbital tooth, but there is no 
trace of a third. The upper surface as usual is marked, late- 
rally, with many oblique lines. 
The male abdomen has a very characteristic form (fig. 2), 
being unusually enlarged. In its outer appearance it closely 
resembles the abdomen of S. picta, ‘Fauna Japonica,’ Crust. 
pl. xvi. fig. 6, but is a little more enlarged. The terminal 
(=seventh) joint is a little longer than broad at the base; the 
penultimate joint is extremely enlarged, its posterior margin 
being even a little broader than three times the length of the 
joint, which is a little shorter than the terminal joint; the next 
joint is but little longer, though still broader ; the fourth and the — 
third joint are a little shorter than the fifth, and still more 
enlarged ; and the very short second joint is a little longer than 
the first, being contiguous to the posterior margin of the 
cephalothorax. Unfortunately the condition of the Paris typical 
specimen of S. sinensis makes it impossible for me to study the 
form of the abdomen; but the abdomen of S. intermedia is much 
less enlarged than that of this species, and presents a quite 
different form. 
The anterior legs are very similar to those of S. intermedia. 
They are equal to one another, both in the male and in the 
female, and in the latter they are a little smaller than in the 
former. Sometimes in male specimens of equal size the anterior 
legs are of a different size. 
