AS PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
linear patch; posterior mesobranchial, short line or patch; cardiacs 
conspicuously elevated with tuberculate or spiniform tips; lateral 
postcardiacs resolvable into three or four tubercle-like clusters of 
eranules; median postcardiac conspicuously elevated ridge or spine; 
posterolaterals, forming curved arc, terminated anteriorly with 
forwardly directed spinelike tubercle. In one case two spines on 
posterolaterals, also two on lateral postcardiacs, and one on posterior 
mesobranchial. In another case approximately four spines on pos- 
terolaterals and one on posterior mesobranchial. 
Chelipeds: Right larger. With well-developed spines, covered by 
fine pile overlying squamiform markings. Posterior border of arm 
bearing two sharp spines, anterior border with three unusually large 
sharp spines, middle the largest. Wrist with large inner and outer 
spines. Upper surface of hand with two spines (excluding that at 
wrist articulation), outer near the finger articulation, inner a little 
distance back. Spines better developed on smaller left chela. ‘Two 
granular carinae on upper surface of hand, two less developed ones 
on outer surface, and one barely recognizable on inner surface. Spaces 
between carinae, also under surface, with conspicuous squamiform 
markings. 
Fifth leg: Merus very short (length almost exactly equalling 
breadth) with finely denticulate posterior border. 
Third maxilliped: Anterior portion of merus produced strongly 
forward but not laterally. 
Male abdomen: Penultimate segment elongate and with concave 
borders, ultimate segment, cordiform, slightly more than half length 
of penultimate. 
Male first pleopod: Short, stout, regularly curving to pointed tip. 
ReEMARKS.—This species keys out in Stephenson and Campbell 
(1959) with P. tweediet, P. tenuipes, P. mariei, and P. alcocki but 
differs from all in the elevated spiniform areas on the posterior por- 
tion of the carapace. 
It is clearly separable from P. rugosus by two spines on the posterior 
border of the arm. 
Portunus spinipes (Miers) 
Figure 14 
Neptunus (Amphitrite) spinipes Miers, 1886, pp. 178-179, pl. 15 (figs. la—c). 
Neptunus (Hellenus) spinipes Miers—Gordon, 1931, p. 534 (under N. pulchri- 
christatus), figs. 9, 10a. 
Not Neptunus (Hellenus) spinipes Alcock, 1899, pp. 31-32, 39-40 (=P. pulchri- 
cristatus (Gordon)). 
Marertau.—Philippines: Sta. 5164, Observation I., Sulu Archi- 
pelago, Tawitawi Group, 18 fm., green mud, Feb. 24, 1908, Alb., 2 
