Color. — Grayish brown irregularly suffused 

 with red or purple on body and legs; spines 

 black, horn color, or purple; fingers of chelae 

 black or brownish purple. 



Habitat. — This species is fairly common in the 

 Carolinas, and is often taken on shelly bottom. It 

 has been taken from wharf piles, buoys (Lunz, 

 1937a), the sponge Ste?natumenia strobilina 

 (Lamarck) (Pearse, 1934), and from offshore 

 reefs (Pearse and Williams, 1951). From low- 

 water mark to 49 fathoms. 



Type locality. — Georgia and east Florida. 



Known range. — North Carolina through Gulf 

 of Mexico and West Indies to Curacao. 



Remarks. — Ovigerous females occur in the 

 Carolinas from May to August, and as early as 

 March in Florida (Wass, 1955). Chamberlain 

 (1961) reported four zoeal stages and one mega- 

 lops stage in the larval development of the species, 



M 



Figure 157. — Male first pleopods in medial view ; A, Pilum- 

 nus sayi Kathbun, entire pleopod ; B, Pilumnus sayi 

 Hathbun. tip iu detail; C, Pilumnus dasypodus Kings- 

 li'.v, tip ; I>, Pilumnus floridanus Stimpson, tip; B, Pilum- 

 nus lacteus Stimpson, tip; F. Pilumnus pannosus Rath- 

 bun, tip; G, Lobopilumnus ugaxsizii (Stimpson), tip; 

 0.125 mm. indicated. 



Figure 158. — Pilumnus sayi Rathbun. A, male in dorsal 

 view, walking legs of left side not shown, 10 mm. indi- 

 cated ; B, large chela in frontal view, 10 mm indicated. 



but did not describe the stages in detail. He found 

 that larval development time varied with tem- 

 perature (18 days at 30° C, 28 at 21° C.) and 

 with food. Larvae matured most rapidly when 

 fed Artemia salina nauplii, did moderately well 

 on Artemia and algae, but did not transform at 

 all when fed algae alone. 



Pilumnus dasypodus Kingsley 



Figures 157C, 159 



Pilumnus dasypodus Kingsley, 1879, p. 155. — Rathbun, 1930a, 

 p. 493, pi. 200, figs. 5-6 (rev.). 



Recognition characters. — Carapace thinly cov- 

 ered on anterior two-thirds with long, fine hair 

 and occasional stouter setae; upper surface of 

 chelipeds and walking legs similarly clothed; 

 small sharp granules on anterolateral region. 

 Anterolateral border with four spines including 

 small outer orbital; spines with bases conical, 

 extremities long, slender, incurved. Orbital 

 border with three or four spines above and about 

 seven below. Frontal lobes separated by a 



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