78 SMITHSONIAN MISCELLANljOUS COLLECTIONS 



placed near the articulation of the fingers, at a distance from them 

 equal to one-fourth the length of the palm ; fingers four-fifths as 

 long as the palm, very slender, and compressed. Ambulatory feet 

 slender, those of the penultimate pair very little longer than those 

 of the posterior pair. Abdomen of male of a triangular form, though 

 rather slender. 



Color, in life, pale reddish, mottled or clouded. Dimensions of a 

 male: Length of carapax, 0.68; breadth, 1.22; of a female: length, 

 0.78; breadth, 1.28 inches. 



This species was dredged in considerable numbers on a muddy 

 bottom in sixteen fathoms, off the Chinese coast near Hongkong. 



113. AMPHITRITE HASTATOIDES ' (Fabricius) De Haan 



Portunus hastatoidcs Fabricius. 



Anipltilrite hastatoidcs De H.\an, Fauna Japonica, Crust., p. 39, pi. i, fig. 3. 



This species in life is of a dark gray color above, with oblong or 

 linear spots of black; below palish white. The lateral spines are 

 not generally quite as long as in the specimen figured by De Haan. 

 Our largest specimen, a female, has the following dimensions : 

 Length of carapax, 0.875: breadth, 1.7 inches. 



Found very abundantly in the harbors and bays about Hongkong 

 Island and vicinity, on muddy bottoms, in 5 to 8 fathoms. 



114. AMPHITRITE GRACILLIMA^ Stimpson 



Plate X, Fig. 2 



Aniphitrite gracillima Stimpson, Proc. Acad. Nat. Sci. Phila., x, p. 38 

 [36], 1858. 



In this sm.all species the lateral spine equals in length more than 

 half the width of the body excluding- spines. The teeth of the 

 antero-lateral margin are minute. An acute tooth or short spine at 

 the posterior corner of the carapax. Third pair of ambulatory feet 

 long. 



The distinctions between this and several allied species may be 

 stated thus: From A. loitgispina and A. vigilans it differs in having 

 but one spine near the base of the fingers on the upper side of the 

 hand. From A. temUpes, which it resembles in the length of the 

 ambulatory feet, it differs in the spines at the posterior corners of 

 the carapax. And from A. hastatoides it differs in its more slender 



^Portunus (Acheloiis) hastatoides (Fabricius). 

 'Portunus (Achelous) graciUimus (Stimpson). 



