114 SMITHSONIAN MISCE;i,LANEOUS COLLECTIONS 



Genus PARATHELPHUSA Milne Edwards 

 i8i. PARATHELPHUSA SINENSIS' Milne Edwards 



Parathelphiisa sinensis M11.NE Edwards, Archives du Museum d'Hist. 

 Nat., vir, 173, pi. XIII, fig. 2; Mel. Carcin., p. 179. 



Carapax strongly convex, four-fifths as long as broad, scarcely 

 narrowed posteriorly. Postfrontal crest interrupted. Antero- 

 lateral margin short, four-toothed, including the angle of the orbit ; 

 teeth about equal, sharply projecting, with smooth margins. The 

 distance from the orbital tooth to the tip of the posterior tooth 

 equals one-fourth the width of the carapax. Front horizontal, pro- 

 jecting, broad, lightly undulated, margin not at all angular over the 

 antennae. Postero-lateral surface striated transversely ; striae about 

 eight in number. Subhepatic region tuberculated behind the orbit ; 

 tubercles somewhat irregularly arranged, small, subequal, and 

 angular. Chelipeds minutely rugate transversely ; a small spine on 

 the meros and one on the carpus. Meros- joint of ambulatory feet 

 bearing a sharp spine near the summit. 



Color in life dark brownish-olive above ; the middle of the cara- 

 pax and the feet punctate with red. Below pale ferruginous. Di- 

 mensions of one of our specimens, a female : Length of carapax, 

 1.08; breadth, 1.36 inches. 



Taken in the river at Whampoa, China. Milne Edwards gives 

 "Mers de la Chine" as the habitat. But it is certainly an inhabitant 

 of fresh, or at least brackish, waters. 



GRAPSID.E 



Genus METOPOGRAPSUS Milne Edwards 



182. METOPOGRAPSUS THUKUHAR= Milne Edwards 



Grapsus tliukuhar Owen, Zool. of Beechey's Voy., p. 80, pi. xxiv, fig. 3. 

 Pachygrapsus parallelus Randall, Jour. Acad. Nat. Sci. Phila., viii, 124. 

 Goniograpsiis thiikujar Dana, U. S. Expl. Exped., Crust., i, 344. 

 Metopograpsus thukuhar Milne Edwards, Melanges Carcinologiques. p. 

 131- 



In this species the internal suborbital lobe sometimes joins the 

 front, but there is usually a sufficiently distinct though narrow hiatus 

 between them. 



^ Potainon (Parathelphiisa) sinensis (Milne Edwards). 

 'Metopograpsus niessor (Forskal). 



