NO. 3r.P9 PORTUNID CRABS — STEPHENSON AND REES 9 



Remarks. — One of the males (23 mm), from Station AB-40, has the 

 left branchial cavity swollen from containing a parasite. The yomig 

 specimen from Station AB 45-63, almost certainly belonging to this 

 species, has an almost continuous front with a barely detectable median 

 notch. 



Several specimens have three spines on the anterior border of the 

 arm, and these key out to C. callianassa from Leene (1938). The 

 present species is immediately recognizable from the prominent 

 frontal teeth. 



As Leene has noted, the last anterolateral teeth are longer in 

 females than in males and longer in smaller specimens than in larger 

 ones. 



Distribution. — Indian region (Ceylon, Calcutta, Andamans) to 

 Indo-Malayan Archipelago. 



Charybdis smithii McLeay 



Charybdis smilhii McLeay, 1838, p. 61. — Krauss, 1843, p. 24. — Stebbing, 1910, 



p. 37. 

 Goniosoma truncata (Fabricius). — A. Milne Edwards, 1S61, p. 380, pi. 34 (fig. 4). 

 Charybdis (Goniohellenus) edwardsi Leene and Buitendijk, 1949, p. 296, figs. 3, 



4c. — Delia Croce and Holthuis, 1965, pp. 33-7 [with pi.]. 

 Gonioneptunus smithii (McLeay). — Barnard, 1950, pp. 163-4, 818, fig. 37j. 

 "^Charybdis {Goniohellenus) hopliles var omanensis, Leene, 1938, pp. 104-7, figs. 



57, 58. 

 Not Portunus truncatus Fabricius, 1798, p. 365 {= Charybdis truncata). 



Stephenson and Rees (in ms.) have examined the type of C. smithii and will 

 report more extensively on the synonymy. 



Material examined. — 3 males (59.5-70.5 mm), Sta. No. AB 

 3-63. 1 female (56 mm), Sta. No. 172 (dipnet at surface). 1 male 

 (63 mm), Sta No. 202A. 1 female (63 mm), Sta. No. 207A. 2 males 

 (both 58.5 mm), Sta. No. 231 A. 14 males (61.5-75 mm), 1 female 

 (56.5 mm), Sta. No. 249A. 51 males (56.5-73.5 mm), 10 females 

 (52-61.5 mm), Sta. No. 252A. 3 males (62-67 mm), Sta. No. 253A. 

 4 males (62-73 mm), Sta. No. 263A. 1 male (59.5 mm), 3 females 

 (50-59.5 mm), Sta. No. 264A. 5 males (49.5-71 mm), 13 females 

 (40.5-60 mm), Sta. No. 268A. 



Apart from the first two listed stations, all trawled, in depths of 

 from 70 to 368 m on mud and/or clay bottoms. 



Distribution. — From a large area of the Indian Ocean, as will be 

 shown in later pubUcations by Stephenson and by Stephenson and 

 Rees. 



Charybdis vadorum Alcock 



Charybdis (.Goniohellenus) hopliles var. vadorum Alcock, 1899a, p. 67. 

 Charybdis {Goniohellenus) sinensis Gordon, 1930, p. 522; 1931, p. 534, figs. 11, 

 12c, d, d'.— Shen, 1934, p. 44, figs. 9, 10. 

 241-652—67 2 



