4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Odontodactylus Bigelow, 1893 



Gamaris H. S., 1876, p. 275.— Holthuis, 1951, p. 86. [Suppressed by ICZN, now 



on Official Index, no. 122.] 

 Odontodactylus Bigelow, 1893, p. 100; 1894, p. 495.— Kemp, 1913, p. 133.— Hansen, 



1926, p. 22.— Bigelow, 1931, p. 144.— Balss, 1938, p. 131.— Holthuis, 1951, 



p. 86. — Hemming, 1954, p. 155. — Holthuis and Manning, in press. — Manning, 



1967, in press. 

 Odonterichthus Bigelow, 1894, p. 543.— Jurich, 1904, p. 396.— Gurney, 1946, 



p. 168 [listed; larva]. 



Definition. — Surface of body smooth; cornea subglobular, set 

 very obliquely on stalk; rostral plate without anterior spine; antennal 

 protopod without papillae; carapace rounded anterolaterally and 

 posterolaterally, without carinae; cervical groove not distinct across 

 dorsum of carapace, position indicated on gastric grooves only; 5 epi- 

 pods present; mandibular palp present; raptorial claw short, stout, 

 dactylus inflated at base; inner margin of dactylus with teeth; propo- 

 dus without proximal movable spine, superior margin not pectinate but 

 distally serrate; ischiomeral articulation distal to terminus of merus; 

 inferior surface of merus not ventrally channelled throughout its 

 length for reception of propodus; endopod of walking legs elongate, 

 2-segmented; exposed thoracic somites without sharp carinae; ab- 

 domen semicylindrical, without sharp carinae on first 5 somites; 

 sixth somite with 6 or more carinae but only 6 terminating in spines; 

 telson with sharp median carina and numerous longitudinal carinae 

 on dorsal surface; 3 pairs of marginal teeth, submedians with movable 

 apices; submedian denticles numerous; 2 fixed intermediate and 1 

 fixed lateral denticle present; basal prolongation of uropod with 

 outer spine the longer. 



Type-species. — Cancer scyllarus Linnaeus, 1758, p. 633, by sub- 

 sequent selection by Bigelow, 1931, p. 144 (ICZN Official List no. 

 731). 



Gender. — Masculine. 



Number of species. — Five. 



Discussion. — In 1913 Kemp recognized 10 species of Odonto- 

 dactylus, as follows: 0. scyllarus (Linnaeus, 1758), 0. japonicus (de 

 Haan, 1844), 0. cultrifer (White, 1850), 0. elegans (Miers, 1880), 

 0. brevirostris (Miers, 1884), 0. hansenii (Pocock, 1893), 0. carinifer 

 (Pocock, 1893), 0. havanensis (Bigelow, 1893), 0. latirostris Borradaile, 

 1907, and O. southwelli Kemp, 1911. Of these, only 0. havanensis 

 occurred in the Atlantic; the remainder were known only from the 

 Indo-West Pacific. 



Hansen (1926) placed four of these species into synonymy. 0. 

 carinifer was synonymized with 0. cultrifer, 0. elegans with 0. scyl- 

 larus, and both 0. latirostris and 0. southwelli with 0. hansenii. 



