Figure 163. — Lobopilumnus agassizii (Stimpson). A, 

 male in dorsal view, walking legs of left side not shown ; 

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



Chelipeds short, stout; carpus with forwardly 

 directed granules, confluent exteriorly; hands 

 with superior and outer surfaces covered with 

 small prominent mammillary tubercles, arranged 

 largely in rows on outer surfaces and having 

 apices directed forward. Walking legs pubescent 

 and hairy, carpal and propodal articles with 

 minute spines above. 



Measurements. — Carapace: female from North 

 Carolina, length, 16 mm. ; width, 21 mm. 



Variations. — Rathbun (1930a) stated that this 

 species is variable as to the number and promi- 

 nence of regions on the carapace, and she rec- 

 ognized four environmental forms within the 

 species. Because only one specimen has ever been 

 reported from North Carolina, and this is no 

 longer extant, it is not possible to assign a form 

 or forms to this area. 



Color. — Gray above with granules and knobs 

 yellowish red and reddish brown; legs white or 

 witli whitish spots (Sohmitl in Rathbun, 1930a). 



Habitat.— In Bermuda, Verrill (1908) found 

 the carapace and legs of this species often thickly 

 covered, sometimes almost concealed, by a coating 

 of calcareous mud and sand adhering to hairs on 



the back. He found it most frequently under 

 stones and dead corals at low tide. Pearse ( 1934) 

 reported this crab from loggerhead sponge 

 Speciospongia vespara (Lamarck). Low-tide 

 mark to 28 fathoms. 



Type locality. — Typical form : East and Middle 

 Keys, Tortugas, Fla. 



Known range. — North Carolina; southern and 

 west Florida; Yucatan; Cuba; Trinidad; Ber- 

 muda. 



Remarks. — Ovigerous females are known from 

 February to July in Florida and Cuba ( Rathbun, 

 1930a, in part). 



Genus Eriphia Latreille, 1817 



Rathbun, 1930a, p. 545. 



Eriphia gonagra (Fabricius) 



Figures 164 A, B, C ; 165 

 Cancer gonagra Fabricius, 1781, p. 505. 



Eriphia gonagra: Hay and Shore, 1918, p. 439, pi. 35, fig. 6.- 

 Rathbun, 1930a, p, 545, text-fig. 83, pi. 222 (rev.). 



Recognition characters. — Carapace approxi- 

 mately quadrate, about one-fourth wider than 

 long, flattened, with regions clearly marked off 

 on anterior two-thirds; surface nearly smooth 

 posteriorly but granulate anteriorly, and with 

 two transverse lines of subspinous granules, one 

 in front of epigastric lobes and another across 

 protogastric and hepatic lobes. Front wide, 

 strongly deflexed, and divided into four lobes, 

 both median lobes broader and more advanced 

 than lateral ones, and with a finely granulate 

 border. Lateral lobes forming front of raised 

 margin of orbits and in contact beneath with a 

 prolongation of infraorbital plate, thus com- 

 pletely excluding antenna from orbit. Antero- 

 lateral margins each with a row of five spines 

 including outer orbital, behind and inside these a 

 few squamiform tubercles. 



Chelipeds unequal, strong, swollen; hands 

 covered with large, round, flattened, squamiform 

 tubercles, more elevated on small than on large 

 hand; carpus with less prominent tubercles; 

 dactyls with squamiform tubercles above at base; 

 major dactyl with large rounded tooth at base. 

 Walking legs rather slender, their distal three 

 articles with fine stiff hairs. 



Measurements. — Carapace: male, length, 31 

 mm.; width, 44 mm. 



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