THE BRAOHYURA AND MACRURA OF PORTO RICO. 
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larger clieliped with one or two molariform teeth, those of smaller eheliped with a blunt cutting edge. 
Legs smooth. Abdomen of male six-jointed, third and fourth somites fused with obliteration of sutures, 
fifth somite also immovably adherent to fourth. 
Carpilius corallinus (Herbst). 
Cancer corallinus Herbst, Natur. Krabben u. Krebse, I, 133, pi. v, f. 40, 1783. 
C'arpiiius corallinus Leach in Desmarest, Consid. sur les Crust., 104, 1825. 
Front almost vertically deflexed, median lobe entire in large specimens, bilobate in small ones, 
and separated from the lateral lobes on either side by a deep U-shaped sinus. Immovable linger of 
large eheliped with two teeth; movable linger with a single larger tooth. Legs compressed. 
Color of carapace brick red, somewhat wine-colored, or coral red, covered with yellow spots. 
Legs veined with brown. Claws spotted. Fingers and nails brown. (A. Milne Edwards.) 
Dimensions of male: Length, 108.2 mm. ; width, 143.8 mm. ; fronto-orbital width, 53 mm. ; width 
of front, 37.2 mm. This is the largest West Indian species of crab. 
Bahamas; West Indies; Goyanna Stone Reef, Brazil; Fernando Noronha (Pocock). Porto Rico: 
Ensenada Honda, Culebra; market at San Juan (Gundlach). 
Genus LIOMERA Dana. 
Liomera Dana, Am. Jour. Sci. (2), xn, 124, 1851. 
Carapace extremely broad, strongly convex in both directions, transversely barrel-like, either 
smooth or with the regions very faintly indicated; its antero-lateral borders thick, either entire or 
divided into four broad shallow rounded lobes, of which the first two are almost coalescent; its postero- 
lateral borders very strongly convergent, straight or a little concave. Front from three-sevenths to 
less than a fourth the breadth of carapace, obliquely deflexed, grooved and notched on middle line. 
Orbits small, with the three suture lines near outer angle usually distinct; eye-stalks short and thick. 
The antennules fold nearly transversely. Basal antennal joint broad and short, merely touching the 
front; flagellum lodged in orbital hiatus. Anterior edge of merus of external maxillipeds a little oblique. 
Fingers of chelipeds somewhat hollowed at tip. Abdomen of male five-jointed, the third to fifth 
somites being fused. 
Key to the Porto Rican species of the genus Liomera. 
A. Large hand three times as wide as small one longimana 
A'. Large hand twice as wide as small one dispar 
Liomera longimana A. Milne Edwards. 
Liomera longimana A. Milne Edwards, Nouv. Arch. Mus. Hist. Nat. Paris, I, 221, pi. xii, f. 7, 1865 (figure incorrect; hands 
represented of equal size); Crust. R6g. Mex., 240, pi. xlvi, f. 1, 1879. 
Carapace about three-fifths as long as broad, thick, very convex, regions very faintly marked; 
antero-lateral margin showing four shallow lobes or teeth, the last two most distinct. Front a little 
less than a third the breadth of carapace, distinctly bilobed, and with a separate tooth at outer end 
below orbital angle; a transverse fringe of hair behind the lobes. Antennal flagellum longer than 
greatest diameter of orbit. Chelipeds extremely unequal in both sexes, smooth, conspicuously punctate; 
arm projecting beyond carapace ; larger eheliped heavy, hands with subparallel margins; the smaller 
hand very slender, about one-third the width of larger. Fingers moderately gaping. Larger wrist 
nearly as broad as long, inner angle blunt; smaller wrist much longer than broad, without an inner 
angle. Legs compressed, almost smooth, hairy. 
Male: Length, 7.3 mm.; width, 12.4 mm.; fronto-orbital width, 7.4 mm.; frontal width, 3.5 mm. 
Florida Keys; West Indies; Yera Cruz, Mexico. Playa de Ponce Reef, Porto Rico. 
Liomera dispar (Stimpson). 
Chlorodius diepar Stirnpson, Bull. Mus. Comp. Zool., n, 140, 1871. 
Leptodius dispar A. Milne Edwards, Crust. R6g. Mex., 271, 1880. 
Liomera dispar Rathbun, Ann. Inst. Jamaica, I, 13, 1897. 
Carapace about three-fourths as long as broad, thick, convex, covered with a short pubescence 
easily rubbed off; regions not defined; an anterior median furrow, also a furrow separating the front 
from orbital angle; antero-lateral margins almost entire, three lobes faintly discernible. Front about 
one-third width of carapace, bimarginate, margin convex, median notch small, external angle not 
projecting. Eyes very short and stout. Antennal flagellum shorter than greatest diameter of orbit. 
Chelipeds less unequal than in L. loiigimana, the smaller hand not so slender, about half the width 
