NO. 3556 PORTUNID CRABS—STEPHENSON AND REES 43 
cause it is distinctly small for an ovigerous female (16 mm.), it is 
possible it should be separated from the remainder. 
FORM II 
Only eight specimens from three stations are available, but even 
so variation between them is less than might be expected from 
a study of form I. In smaller specimens the lateral frontal teeth are 
relatively shorter, less projecting, and less outwardly inclined. In 
two specimens (Sta. 5169) there is a single instead of a pair of meta- 
gastric granulated elevations. 
Unexpectedly constant features in form II comprise: 
a. Anterolateral teeth always long, equivalent in length to about 
five of the preceding teeth. 
b. Posterior-posterolateral junction of carapace always near to a 
right angle and moderately sharp. 
ec. General granulated areas of carapace relatively inconspicuous 
amongst the pile of hairs, not very coarsely granular, and without 
any tendency to be tuberculate. 
MitnE Epwarps’ MATERIAL.—Through the good offices of Mme. 
Daniéle Guinot, the following specimens were received from the 
Muséum National d’Historie Naturelle, Paris: 1 male (ca. 14 mm.), 
1 ?female, labelled “Neptunus rugosus A. M. Edw. Auct. det. Coll. 
A. Milne Edwards 1903 (Marie) Nouvelle-Calédonie—Iles des Pins, 
1873, p. 156. Ancienne collection séche. D. Guinot 1963.” Un- 
fortunately, when received they were so damaged that the central 
portions of the carapace could not be studied, and one specimen 
could not be measured at all accurately. Remaining details are: 
Frontal teeth: Acutely rounded, median almost as long as laterals. 
Similar to those of form I. 
Last anterolateral tooth: Length equivalent to a little more than 
three preceding teeth, sinuous, and directed slightly backward. 
Similar to those of form I in length and form II in shape. 
Carapace granulation: On undamaged areas, granulation much 
coarser than form IJ. Visible areas conspicuously elevated, as in 
form I. 
Male abdomen: Ultimate segment as broad as long with rounded 
tip. Penultimate segment broader than long (breadth 1.37 times 
length), with sinuous convex sides. (See fig. 10.) 
In general, these specimens are closest to form I, except for the 
shapes of both ultimate and penultimate segments of the male ab- 
domen, which are closer to form II. 
They bridge some of the gap between the two forms, and further 
collecting may result in a complete bridging. Meanwhile it is re- 
tained to emphasize the variability of the species. 
