Figure 137. — Acanthocarpus alexandri Stimpson. Male 

 in dorsal view, walking legs of left side not shown, 10 

 mm. indicated. 



Type locality. — Off the Quicksands, Florida 

 Keys, 74 fathoms. 



Known range.- — Georges Bank off Massachu- 

 setts to west coast of Florida; Puerto Rico to 

 Grenadines; Brazil (Da Costa, 1959). 



Remarks. — The species has been recorded off 

 both Carolinas, usually at depths greater than 100 

 fathoms. One collection was taken off South 

 Carolina in 1950 at 60-65 fathoms along with 

 Sicyonia and Hymenopenaeus sp. 



Rathbun (1937) reported ovigerous females in 

 June and July from Florida. 



Subfamily Matutinae 



Merus of external maxillipeds elongate and 

 acute, entirely concealing palp in repose (Alcock 

 in Rathbun, 1937). 



Genus Hepatus Latreille, 1802 



Rathbun, 1937, p. 234.— Holthuis, 1959, p. 173. 



KEY TO SPECIES IN THE CAROLINAS 



a. Carapace covered with small spots ; front bidentate 



pudibundus (p. 157). 

 aa. Carapace covered with large spots ; front truncate 



epheliticus (p. 158). 



Hepatus pudibundus (Herbst) 



Figures 138-139 



Cancer pudibundus Herbst, 1785, p. 199. 



Hepatus princeps: Rathbun, 1937, p. 235, pi. 70, figs. 1-2 

 (rev.). 



Hepatus pudibundus: Holthuis, 1959, p. 167, figs. 36-38a, b 

 (rev.). 



Recognition characters. — Carapace between 

 two-thirds and three-fourths as long as broad, 

 relatively narrower in juveniles than in adults, 



covered with transverse lines or small spots, 

 strongly convex. Surface smooth in adults; juve- 

 niles with eight distinct rows of tubercles, three in 

 a transverse line in broadest part of carapace, two 

 others in front and three behind. Front thick, 

 obtuse, slightly bidentate. Anterolateral margin 

 divided into 12 or 13 more or less rectangular 

 teeth, denticulate on margins and not projecting; 

 anterior portion of posterolateral margin con- 

 sisting of 2 rows of tubercles placed side by side 

 with no space between, a small tooth in middle of 

 rows and another in posterior portion of this 

 margin. 



Outer face of hands with five rows of tubercles 

 exclusive of marginal ones. Dactyls of walking 

 legs with a coating of short, dense pubescence, ex- 

 cept for tip, and a narrow smooth line on each 

 side. 



Measurements. — Carapace: males, length, 16- 

 55 mm., width, 21-76 mm.; females, length, 14- 

 46 mm., width, 18-62 mm. (Holthuis, 1959). 



Color. — "Pale yellowish brown, with dark- 

 brown transverse lines, or transverse series of 

 spots; legs subochreous [sic], with one or two 

 large purplish blotches in each joint." (Dana in 

 Rathbun, 1937.) Holthuis (1959) gave the color 

 in preserved specimens. Carapace covered with 

 small reddish dots, scattered or sometimes ar- 

 ranged into transverse bands or lines, larger pos- 

 teriorly than anteriorly; similar dots on carpus 

 and palm; walking legs with two conspicuous 

 broad bands of reddish color on merus, one on 

 carpus and one on propodus, meral bands most 

 distinct on last leg. 



Figure 138. — Hepatus pudibundus (Herbst). Female in 

 dorsal view, approximately natural size (after Hol- 

 thuis, 1959). 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



157 



