174 



U.S. NATIONAL MUSEUM BULLETEST 292 



Grapsus integer (Latreille ms). — H. Milne Edwards, 1837, p. 79. 

 Cyclograpsus occidentalis A. Milne-Edwards, 1878 bis, p. 228 [type-locality: Cape 

 Verde Islands]. 



Diagnosis. — Carapace subrectangular, broad, less than four-fifths 

 as long as vnde, longitudinally convex anteriorly, flat posteriorly, 

 nearly smooth except for single minutely crenulate ridge on posterior 

 branchial region; lateral margins subparallel posteriorly, curving 

 strongly mesially anteriorly, unarmed posterior to outer orbital 

 angle, fronto-orbital distance slightly more than seven-tenths of 

 maximum Avidth of carapace; front curving ventrally, becoming 

 perpendicular near margin, but not abruptly deflexed, slightly more 

 than one-third as wide as carapace, margin very faintly bUobed, 

 nearly straight, in dorsal view. Eyes rather small but fully formed, 

 cornea narrower than basal portion of eyestalk. Ventral margin of 



Figure 55. — Cyclograpsus integer, male (carapace length 7.1 mm) from Dominica station 6. 



orbit not produced, paralleled ventrally by longer sinuous carina 

 curving mesially to anterolateral angle of mouth area. Third maxilli- 

 peds with oblique hairy ridge crossing merus and distolateral angle of 

 ischium, widely gaping, exposing mandibles. Chelipeds subequal, 

 carpus unarmed, produced as rounded lobe on flexor margin; palm with 

 low longitudinal dorsal ridge on proximal portion, othemnse smooth; 

 fingers pointed, not spoon tipped, smooth. Walking legs not broad and 

 flat, merus of tliird pereiopod less than one-third as wide as long, with 

 obscure blunt subdistal tooth on extensor margin; dactyl considerably 

 longer than extensor margin of propodus. Denuded first pleopod of 

 male terminating in posterior view in subquadrate endpiece directed 

 distolaterally (fig. 586). A small species, maximum carapace length 

 in midline about 13 mm. 



Color in life. — Entire crab orange tan with some areas slightly 

 darker than others. Anterior half of carapace dark A\dth pale orbital 

 margins and cream-colored spots as follows: one pair of elongate ones 



