THE BRACK YURA AND MACRURA OF PORTO RICO. 
37 
tooth. Orbit with three grooves near the outer angle well marked; inner orbital angles, both upper 
and lower, well pronounced. Eyes on short, thick stalks. Side edges of front not turned down, and the 
short basal antennal joint does not nearly reach the front, so that the cavities of orbits and antennules 
are not properly separated; next antennal joint just reaches front, and the long antennary flagellum 
stands in orbital hiatus. Antennules fold nearly transversely. Anterior edge of merus of external 
maxillipeds oblique and a little sinuous but not excised. Ridges of endostome complete, but low and 
faint. Chelipeds massive, a little unequal in both sexes; fingers stout, pointed, not hollowed. Abdo- 
men of male singularly broad, all seven segments distinct. 
Menippe nodifrons Stimpson. 
Pseudocarcinus rumpliii Milne Edwards, Hist. Nat. Crust., i, 408, 1834. (Not Cancer rumphii Fabricius, Ent,. Sys., Suppl., 
336, 1798. ) 
Menippe rumphii Dana, Crust. U. S. Expl. Exped., I, 179, 1852. 
Menippe nodifrons Stimpson, Ann. Lyc. Nat. Hist. N. Y., vii, 53, 1859. 
Gastric region distinct and lightly subdivided into three lobes; between it and the front are four 
large tubercles forming a quadrilateral, the anterior pair farther apart than posterior. A low indistinct 
elevation, nearly parallel with curve of antero-lateral border, crosses either branchial; another ridge, 
less distinct, crosses gastric and hepatic regions. Surface closely granulate and coarsely pitted. Front 
is a little more than a fifth of greatest breadth of carapace, and consists of two prominent round- 
pointed lobes, outside of each of which are two smaller rounded lobes; the inner of these is sometimes 
obliterated in the old. Antero-lateral border rather sharp and divided into four prominent lobes, of 
which the first two are broadly rounded, last two dentiform, obtuse, strongly projecting; from the 
last one a ridge extends obliquely inward on carapace. Chelipeds finely granulate and with distinct 
pits; inner angle of wrist bluntly prominent. Legs stout, granular above; upper border of carpal 
joints and both borders of propodi hairy; dactyli more thickly hairy. 
Dimensions of male: Length, 46.2 mm.; width, 67 mm.; width of front, 14.3 mm. 
From Indian River, Florida (U. S. Fish Commission), and Gulf of Mexico to Brazil. Mayaguez 
(Gundlach, as Menippe rumphii). I have seen no specimen of this from Porto Rico; it is undoubtedly 
the species noted by Gundlach, but not Cancer rumphii Herbst. 
Genus OZIUS Milne Edwards. 
Ozius Milne Edwards, Hist. Nat. Crust.., I, 404, 1834. 
Carapace broad, transversely oblate-oval, moderately convex fore and aft, slightly convex or 
nearly flat from side to side; the regions, except gastric, little defined; the surface smooth or granular, 
often rugose anteriorly. Antero-lateral borders of good length, strongly arched, usually broadly 
crenate or lobulate; postero-lateral borders convergent, about as long as or shorter than antero-lateral. 
Front rather broad (considerably more than a fourth the greatest breadth of carapace), obliquely 
deflex ed, cut into four lobules or teeth of about equal size, separated from orbit by a notch. Orbits 
deep, rather small, the grooves near outer angle inconspicuous; eyes on short, thick stalks. The 
antennules fold nearly transversely. Basal antennal joint prolonged between side of front and orbital 
plate; the flagellum, which is very small (about half the major diameter of the orbit in length), stands 
in orbital hiatus. The ridges of the endostome, defining the expiratory channels, are very strong, and 
the opposed margin of the merus of the external maxillipeds is notched, usually very deeply, so that 
a permanent expiratory orifice results. Chelipeds massive, unequal in both sexes; the fingers of good 
length, pointed, not hollowed. The abdomen of the male consists of seven segments. 
Ozius reticulatus (Desbonne & Schramm). 
Lagostoma reticulata Desbonne & Schramm, Crust. Guadeloupe, 34, pi. iv, f. 6, 1867. 
Ozius reticulatus A. Milne Edwards, Crust. R6g. Mex., 278, pi. lv, f. 3, 1880. 
Carapace more than 1.5 times as wide as long; deeply corroded along the antero-lateral borders, 
covered with depressed granules. Front bimarginate. Antero-lateral margin somewhat crenate in 
front and having behind indications of three teeth. Claws corroded. Fingers dentate, those of larger 
claw gaping, and with a large basal tooth on the dactyl. 
Wine color or a dirty rose, with spots of fawn color. Fingers brown. 
Male: Length, 15 mm.; width, 23.8 mm.; fronto-orbital width, 9.7 mm.; frontal width, 5.8 mm. 
West Indies; Sabanilla, United States of Colombia. Ensenada Honda, Culebra ( Fish Hawk). 
