KEY TO GENERA AND SPECIES IN THE CAROLINAS 



a. Rostrum rather broad, margins toothed 



Galathea rostrata (p. 105). 



aa. Rostrum slender, toothless except for supraocular 



teeth at extreme base Munida irrasa (p. 105). 



Genus Galathea Fabricius, 1793 



Fabrlcius, 17,93, p. 471.— Milne Edwards and Bouvier, 1897, 

 p. 13.— Hemming, 1958b, p. 143. 



Galathea rostrata Milne Edwards 



Figure 81 



Galathea rostrata Milne Edwards, 1S80, p. 47. — Hay and Shore, 

 1918, p. 402. pi. 29, fig. 4 (rev.).— Chace, 1942, p. 30. 



Recognition characters. — Carapace somewhat 

 flattened; transverse ciliated ridges prominent, at 

 least four continuous for entire width of cara- 

 pace; lateral margins with a number of acute 

 spines. Front prolonged into a broad, acute ros- 

 trum armed with four strong, anteriorly pointing 

 spines on each side. Third maxilliped with inner 

 margin of merus armed with three or four spines. 



Chelipeds nearly twice as long as body, com- 

 paratively heavy; with rows of spines or spini- 

 form granules along margins and appressed, 



Figure 81. — Galathea rostrata Milne Edwards. Animal 

 in dorsal view, walking legs of right side not shown, 3 

 mm. indicated. 



squamiform, ciliated granules on surfaces; a few 

 larger spines on carpus and distal end of merus; 

 hand a little shorter than body; fingers gaping at 

 base. 



Abdomen with transverse striae like those on 

 carapace but without spines. 



Measurements. — Length of body : male, 18 mm. 



Color. — Ground color off white, cream, and 

 light yellow; mottled with orange and reddish 

 orange especially on legs, less evident on body; 

 spines red or tipped with red ; a single small cir- 

 cular reddish spot in center of each branchial 

 region; a white band on propodi of walking legs; 

 distal half of lingers white (from specimen re- 

 cently preserved in formalin). 



Habitat. — Ten to 50 fathoms; (rarely to 1,178 

 fathoms south of Block Island, R.I. ? ) . 



Type locality. — Sixteen miles north of Jolbos 

 Islands [Yucatan Peninsula] at 14 fathoms. 



Known range. — Off Cape Hatteras, N.C., to off 

 Mississippi River Delta, and Yucatan, Mexico; 

 (Rhode Island?). 



Remarks. — Reports of this species are rare in 

 the literature and only a few specimens have been 

 taken off Beaufort, N.C. 



Ovigerous females have been reported off west- 

 ern Florida in March and April (Milne Edw T ards 

 and Bouvier, 1897, and U.S. National Museum 

 records). 



Genus Munida Leach, 1820 



Leach, 1820, p. 52. — Milne Edwards and Bouvier, 1897, p. 20 

 (rev.). 



Munida irrasa Milne Edwards 



Figure 82 



Munida irrasa Milne Edwards, 1880, p. 49. — Hay and Shore, 

 1918, p. 402, pi. 28, fig. 8.— Chace, 1942, p. 46 (rev.). 



Recognition characters. — Carapace narrowed 

 anteriorly, adorned with iridescent pubescence, 

 spiny. Rostral spine much longer than supraocu- 

 lar spines, latter not extending so far as cornea. 

 A row of 10 spines across gastric region in addi- 

 tion to 1 or 2 on each hepatic region, 2 to 4 on each 

 triangular area, and 1 to 4 on either side behind 

 cervical groove on inner portion of each branchial 

 region; anterolateral spine long, followed by 6 

 distinct lateral spines. Merus of third maxillipeds 

 with three spines on lower margin. 



Chelipeds three or four times as long as cara- 

 pace, covered with squamiform, ciliated tubercles; 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



105 



