260 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



ACTAEA PALMERI Rathbun 



Plate 106, Figures 3-6 



Aclaea lanigera Hansen, MS., in Copenhagen Mus. 



Aciaea palmeri Rathbun, Proc. U. S. Nat. Mus., vol. 17, advance sheet, March 

 30, 1894. p. 3; July, 1894, p. 85 (type-locality, Rodriguez Creek, Florida; 

 type. Cat. No. 13927, U.S.N.M.).— Odhner, Goteborg's K. Vet. Handl., 

 Fjjirde Foljden, vol. 29, No. 1, 1925, p. 76, pi. 4, figs. 20, 20a. 



Diagnosis. — Clothed with a thick coat of long hair in which rasp- 

 berr34iko nodules stand out. Fingers sharp-edged, tips acute. A 

 row of denticles on inner margin of ischium of maxillipeds. 



Description. — Carapace as well as exposed surface of chelipeds and 

 legs ornamented with raspberrylike nodules; intervening furrows 

 filled with long silky hair which covers also the hinder part of the 

 dorsal surface of carapace as well as the whole exposed under surface 

 of the crab. Nodules of carapace, about 30 in number not counting 

 orbits, vary in form and size and occupy approximately the following 

 areas: 1 M; 2 M (two side by side); 3 M (two median, sometimes 

 grown together in the old, and behind, two lateral, with sometimes 

 another pair very small, still further back, more often concealed); 

 1-6 L; 1-2 R. The "raspberries" on 1 L, 3 L, 4 L and 1 R follow 

 the antero-lateral margin; in the intervals between them are three 

 sharp incisions well covered with thick hair and best seen from 

 below. Edge of front with three strong U-shaped bays; median 

 lobes and much smaller lobes at outer angles raspberrylike. A small, 

 similar nodule on basal article of outer antenna. Three supra- 

 orbital and two suborbital lobules surround the eyes. In front of 

 the first lobule of the side margin (1 L) is another very small one. 

 A still smaller lobule median, on intestinal region immediately be- 

 hind cardiac region. A pair of low, elongate nodules covered with 

 extremely small and well separated granules occupy the cardiac 

 region, and are seldom exposed. 



Inner margin of ischium of outer maxillipeds bears a row of rounded 

 denticles. 



Chelipeds with 6 "raspberries" on carpus (7 in large female,. 

 25572), and 5 on hand (6 in 25572), of which 4 form a longitudinal row 

 on upper edge. Lower edge of hand marked by a row of granules. 

 Fingers bare, broad at base, meeting when closed, edges sharp, tips 

 acute and crossing; 3 or 4 prehensile teeth on basal half of each; 

 dactylus with acute granules on upper surface of proximal half, 

 almost concealed by long hair. 



The first thi'ee ambulatories bear small "raspberries" of which 2 

 are on the carpus and 2 on the propodus; the carpus of the third 

 pair may have a third nodule. In the last leg the merus has proxi- 

 mally a single granule, distally a small "raspberry," the carpus 

 bears three of which the 2 proximal are near together, and the pro- 

 podus either two, one, or none. 



