THE BRACHYURA AND MACRUKA OF PORTO RICO. 
49 
Florida Keys and Bahama to Bahia, Brazil; west coast of Africa, from Cape Verde Islands to St. 
Paul de Loanda. Porto Rico: San Antonio Bridge, San Juan; Mayaguez; Puerto Real; reefs at Ponce; 
Ensenada Honda, Culebra; Hucares; Fajardo. 
Callinectes exasperatus (Gerstsecker) . 
Lupea exasperata Gerstsecker, Arch. f. Natur., xxn, pt. 1, 129, 1856. 
Callinectes tumulus Ordway, Boston Jour. Nat. Hist., vn, 574, 1863. Rathbun, Proc. U. S. Nat. Mus., xvni, 359, pi. xvm: 
xxiv, f. 6; xxv, f. 5: xxvi, f. 5; xxvn, f. 5, 1895. 
Callinectes exasperatus Rathbun, Proc. Biol. Soc. Washington, xi, 150, 1897. 
Carapace very convex ; depressions deep; length of intramedial area no more than half its anterior 
width. Frontal teeth four, triangular, tips rounded, the two median large and prominent, but not so 
far advanced as lateral. Submedian tooth short, exceeding the front but little. Suborbital lobe 
rounded. Antero-lateral margin very arcuate; teeth broad, the first six very convex on posterior 
margins and obtuse, the next two acute; of the eight teeth, the fifth is the largest; the sixth and 
seventh next in size. Lateral spine less than twice the length of preceding tooth. Penultimate 
segment of male abdomen similar in shape to that of C. ornalus, but much shorter; appendages reaching 
to about middle of penultimate segment, tips incurved. In the abdomen of the female the penultimate 
segment is shorter than fifth and its margins are very arcuate. Spine at distal end of merus and carpal 
spine are almost obsolete, being replaced by blunt prominences. A blunt tooth on anterior margin of 
the carpus just below inner angle. Costse of manus coarsely and sparingly tuberculate. 
Dimensions of male: Length to sinus, 61.5 mm. ; entire length, 63.6 mm.; width, 118.5 mm.; 
length of lateral spine, 7.9 mm.; length of preceding tooth, 5 nun. 
Florida Keys to Rio de Janeiro, Brazil. Porto Rico: San Antonio Bridge, San Juan; Catafio, San 
Juan Harbor; Rio Bavamon, above Palo Seco; Mayaguez; Puerto Real; Hucares. 
Callinectes bocourti A. Milne Edwards. 
Callinectes. bueinnii A. Milne Edwards, Crust. R#g. Mex., 226, 1879 (var. of Callinectes diacanlhns). Rathbun, Proc. U. S. N. M. 
xvm, 360, pi. xix; xxiv, f. 7; xxv, f. 6; xxvi, f. 6: xxvn, f. 6, 1895. Proc. Biol. Soc. Washington, xi, 151, 1897. 
Very convex; areolations prominent; coarsely granulate, except along lateral margin, where the 
carapace is smooth. Intramedial region very long, its length about equal to its posterior width. Front 
with four large rounded teeth, the median the smaller and a little less advanced or quite as advanced 
as lateral. Suborbital tooth short, triangular, narrow, obtuse. Antero-lateral teeth very broad, acute, 
the last two or three spiniform. Lateral spine short, usually less than twice the length of preceding 
tooth. Penultimate segment of abdomen in male constricted in its proximal portion, widening at both 
extremities; terminal segment long; appendages reaching to end of abdomen, with a double curve; tips 
crossing. The sternum has a deep longitudinal groove in front of abdomen. Abdomen of female very 
long, especially the penultimate segment; terminal segment much longer than wide. Costa? of chelipeds 
with depressed granules, often appearing to the eye almost smooth. Carpal and distal meral spine 
usually normal, though sometimes in old specimens reduced to blunt projections. A broad, blunt tooth 
on anterior margin of carpus just below inner angib. 
Dimensions of male: Length to sinus, 69.5 mm. ; entire length, 72.5 mm.; width, 140 mm. ; length 
of lateral spine, 10 mm.; length of preceding tooth, 7 mm. 
Barbados; Honduras to Rio de Janeiro; west coast of Africa from Senegal to Chinchoxo. 
Porto Rico: Catafio, San Juan Harbor; Rio Bavamon, above Palo Seco; Aguadilla; Mayaguez on 
coral reef; Hucares. 
Lupa diacantha, recorded by Gundlach, represents one or more species of Callinectes; common 
name “Jaiba” (Gundlach). 
Genus LUPELLA Rathbun. 
Lupa de Haan, Fauna Japon., 11, 1833. (Not Lupa Leach, 1814.) 
Lupella Rathbun, Proc. Biol. Soc. Washington, xi, 155, 1897. 
Closely allied to Porlunus. Inner suborbital angle remarkably prominent and firmly united with 
a prolongation from basal joint of antenna. Outer maxillipeds extend far beyond front; merus rounded 
in front, its outer angle obtuse and strongly produced; last two segments of palpus flattened and 
laminate. Abdomen of male narrow, third segment narrowing rapidly toward distal end. Transverse 
sutures of posterior half of sternum interrupted either side of abdomen, under which they do not pass. 
Median suture of sternum crosses the four posterior segments. 
2d— F. C. B. 1900—1 
