496 BEPOIIT ON THE OB DEE STOMATOPODA—BIGELOTV. vol.xvil 



thedactylus of the raptorial limb dilated at the base aud provided with 

 lateral teeth; the rostrum more or less triangular but uot produced 

 into a spine; the telson strongly resembling that of the genus Pseudo- 

 squilla, and as a rule with not more than two intermediate denticles. 



Rcmarlis. — This genus, which occupies an intermediate position be- 

 tween Gonodactylus and PseudosquiUa, "was described by me in a pre- 

 liminary paper (1893) as a subgenus of Gonodactylus, but it is sufiflcieutly 

 distinct to merit the rank assigned to it here. 



ANALYTICAL KKY TO THE SPECIES OF ODONTODACTYLUS.* 



*Dact,vlus of raptorial limb with 2 lateral teeth. 



Kostruin trausverse aud subtriaugular ; median crest of telsoa elevated. 



scYLLAHUS, Llunsus. 

 Rostrum enlarged at the base aud ending in a point ; median crest of the telson 

 lamellate, but much less elevated than in the next. 



15LEEKEKII, A. Milue-Edwaids. 

 Kostruin quadrilateral; median crest of the telson lamellate and with a vertical 

 height nearly equal to its distance from the lateral margin. 



CULTIUFER, White. 



"Dactylus hut little ventricose at the base; rostrum somewhat transverse, not 



acute; telson as broad as long dorsally, nearly smooth, with an acute crest 



ending in a spinule elegans, Miers. 



** Dactylus v/lth more than 2 lateral teeth. 



Dactylus with 3 teeth ; rostrum pentagonal with a short median jioint. 



TKACHUKUS, Aon Marteus. 

 Dactylus with 3 teeth j rostrum ovately convex, its extremity bent downward; 



eyes very large and globular carinifek, Pocock. 



Dactylus with 5 to 7 small serrations on its inner margin; rostrum sinuate at the 



sides, tip obtuse and strongly incurved .j aponicu.s, Berthold. 



Dactylus with 6 small lateral teeth; rostrum uot sinuate but transverse and 



rounded in outline ; eyes very large havanensis, Bigelow. 



Dactylus with 9 teeth ; rqstrum with evenly convex anterior border and evenly 



rounded angles; eyes large hansenii, Pocock. 



Dactylus very little veutricose at base and with about S teeth on its inner mar- 

 gin ; rostrum transverse bkevirostkis, Miers. 



ODONTODACTYLUS SCYLLARU8 (Linuiens). 



SqiilUa arenaria promt, Seba, Thesaurus, hi, p. 5, 1758. 



Ca/(('e/-se!///rtr«s, LiNN.EUs, Syst. Nat. (ed. xii), p. 10.54, 1766. 



Squilla ncijUarun, Fabricius, Ent. Syst., ii.,p.512, 1793. Lamarck, Hist. Anim. 



sans Vert., v, 1818, p. 189. 

 Cancer (Mantis) sci/IIarus, Herbst, Nat. Krabben, etc., ii, p. 99, 1796. 

 Gonodactyhis scyUariis, Latreille, Encycl. Meth., x, p. 473, 1825. etc. — Miers, 



Ann. and Mag. TS^at. Hist. (5), v, p. 115, 1880. 



* All of the'species in this key, except havanensis, have been described previously 

 as species of Gonoduetyluii. 



