CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION 29 



Dredged off the harbor of Porto Praya, Cape de A'erde Islands, in 

 20 fathoms, among nulhpores. 



34. LAMBRUS LACINIATUS' De Haan 



Lambrus laciniatus De Haan, Fauna Japonica, Crust., p. 91, pi. xxii, figs. 

 2, 3. Adams and White, Voy. Samarang, Crust, p. 29. 



Recent specimens are of a reddish or yellowish-brown color above, 

 paler and sometimes whitish below. Hands tipped with a dark 

 mahogany color. 



Young specimens, the carapax of which is not over two-thirds of 

 an inch in length, are much smoother than the adults, with few 

 tubercles on the surface of the body and none on the flat faces of 

 the chelopoda. The teeth on the margins of the carapax and hands 

 are small, little projecting, and scarcely denticulated. 



This species is very common in the seas adjacent to the shores 

 of Southern China, particularly about Hongkong. It inhabits 

 muddy bottoms in from 5 to 20 fathoms. One specimen was taken 

 in 25 fathoms, shelly bottom, near the middle of the Northern China 

 Sea. 



35. LAMBRUS TUBERCULOSUS - Stimpson 



Plate IV, Fig. 4 



LoMibnis tubcrcitlosus Stimpson, Proc. Acad. Nat. Sci. Pliila., ix, p. 220 

 [27], 1857. 



In form, length of arms, and general appearance this species is 

 similar to L. validiis. Proportion of length to breadth of carapax, 

 I : 1.2 1. Branchial regions separated from the median ones by pro- 

 found depressions. Surface above everywhere covered with small 

 flattened tubercles of nearly equal size. These tubercles are gener- 

 ally smooth on their flattened upper surfaces, and are each sur- 

 rounded by a ring or crown of granules, thus resembling the paxilli 

 of some kinds of starfishes. Two or three along the median line are 

 larger and more proiuineiit than the others. Lateral margin of the 

 carapax with ten serratetl and granulated teeth, tiie first one a slight 

 lobe at the hepatic region ; the posterior two very much larger than 

 the others, sharply projecting, and ramose on all sides with denticu- 

 lations. Beneath and within the posterior one tlicrr is a much 

 smaller one of similar character. Posterior margin with tliree gran- 

 ulated knobs, the middle one smallest and trilobate. Front deeply 



^ Parthenol^c laciniata (de Haan). 

 ' Partlwnof^c tubcrciilnsii (Stimpson'). 



