186 



DE. J. G, DE MAN ON THE PODOPHTHALMOTJS 



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 is a 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 

 8. sinensis, and separated from one another by rather deep 

 incisions ; the internal lobes are a little broader than the 

 external, and do not bide 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. picia, 'Fauna Japonica,' Crust, 

 pi. 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 

 cephalo thorax. 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 iS. intermedia is much 

 less enlarged than that of this species, and presents a quite 

 diff'erent form. 



The anterior legs are very similar to those of 8. 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 difierent size. 



