I 



from the Loicer Amazons djc. 57 



Notes on the Types of the above Genera. 

 Ctenus, Walck. 



There is no question that the type of this genus is C. du- 

 hius, Walck., Tabl. Aran. 1805, p. 16, it being the only species 

 here assigned to the genus. As to the identity of the type 

 form, M. Simon says : — " Le Ctenus duhius, Wlk., type du 

 genre Ctenus (Tabl. Ar.), qui existe encore au Musdura de 

 Paris, rentre dans la division a laquelle le comte Keyserling 

 a laiss^ le nom de Ctenus,''^ and " II est synonyme du genre 

 Phoneutria, Perty " (Ann. Mus. Genov. 1884, p. 355)*. 



Without, however, having seen the type of the genus, one 

 would not like to be too sure of its affinities. Keyserling 

 included all those ctenoid forms which were characterized by 

 four or five pairs of spines beneath tibia? i. and ii. under 

 Ctenus, Walck., in his more recent work Bras. Spinn. 1891. 

 Possibly this extension would include G. dubius, Walck. In 

 1877, however, when Keyserling first differentiates the 

 Ctenoid genera, he includes under Ctenus, with four pairs of 

 subtibial spines, as distinct from Microctenus, with five pairs, 

 three species only — C. granadensis, C.bogotetisi's^ and C. Sal^i. 

 The first and the third belong to Cupiennius, 8im,, while the 

 second belongs to the new genus Lycoctenus. So that I use 

 the generic term Ctenus in this paper with mental reserva- 

 vations as to future possibilities. 



Phoneuteia, Perty. 



Walckenaer, in Ins. Apt. i. p. 369-70, includes botii 

 Perty's species under his older genus Ctenus, though he 

 regards tlie former as distinct from the latter, in so far as 

 concerns the curvature of the second row of eyes, straight in 

 Ctenus dubius, recurved in Phoneutria. 



Neitlier C. Koch, who describes and figures three forms to 

 which he gives the names respectively P. fera, Perty, P. ochra- 

 cea, C. K., and P. rujibarbis, Perty (Die Arach. xv. pp. 60, 

 62, and 64), all from Brazil, nor Keyserling, who figures the 

 vulva of a species under the name P. rujibarbis, Perty (Verh. 

 zool.-bot. Ges. Wien, 1881, p. 575, pi. xvi. fig. 21), defi- 

 nitely selects the type of Phoneutria ; neitlier, subsequently, 

 does either Gerstacker, Simon, Karsch, Holmberg, or 

 Bosenberg, each of whom assigns one or more species to this 

 genus, select the type. 



* M. Simon kindly sends me the fullowing iufonuatiou, Oct. 26, 

 1896: — '• Je n'ai pas retrouvd au must^um les U'pes de Ctenwi janeirus, 

 sanguineus, rufus,fusct(s, et dubius, Walckenaer, qui sout bien sur perdus." 



