744 MB. t. 0. MOKAED OAMBBlDaE ou [June 16, 



■ One would be inclined to consider that possibly a separate species 

 is in process of differentiation, and that the further westwards it 

 extended the more decided might be the differential characters. Of 

 course this is only a theory, as regards the latitudinal distribution 

 of the forms, which would be at once upset by grizzled specimens 

 from Para, for instance. The difference, however, is so striking, 

 that one would not hesitate to regard the grizzled form as 

 decidedly a different species from the red, when alive in all the 

 fresh beauty of its grey-green colouring ; until careful comparison 

 proves that the difference is, so far, but one of coloration, having 

 apparently no structural counterpart. 



Species which prohahly belong to the genus Avicularia. 



1848. Mijgale hirsutissima, C. K., $ , Die Arachn. ix. p. 76. 

 South America. In coll. J. Sturm, Niirnberg. 



1848. Mygale leporina, C. K., J, Die Arachn. ix. p. 55. Bahia. 

 Mus. Berlin. 



1848. Mygale diversipes, C. K., $ , Die Arachn. ix. p. 65. 

 Brazil. Mus. Berlin. 



1848. Mygale Iceta, C. K., $, Die Arachn. ix. p. 66. Porto 

 Rico. Mus. Berlin. 



1848. Mygale ccesia, C. K., 5 , Die Arachn. ix. p. 88. Porto 

 Rico. Mus. Berlin. 



1848. Mygale cletrita, 0. K., rf > Die Arachn. ix. p. 86. Brazil. 

 Mus. Munich. 



1848. Mygale ivalckenaerii, Perty, Del. An. Artie, p. 191, t. 38. 2. 

 Brazil. 



1871. Avicularia vulpina, Auss., Verhandlungen &c., Wien, 

 1871, p. 202. Brazil. 



1876. Avicularia rutilans, Auss., d , Verhandlungen &c., Wien, 

 p. 184. New Granada. 



1876. Avicularia metallica, Auss., Verhandlungen Ac, Wien, 

 p. 185. Surinam. 



1889. Avicularia velutina, Sim., $ , Ann. Soc. Ent. Fr. 1889, 

 p. 213. Venezuela. 



1890. Avicularia hohnbergii, Thor., Ann. Mus. Genov. (2) viii. 

 p. 399. Hab. ? 



1891. Aviculana glauea, Sim., <S , Ann. Soc. Ent. Pr. 1891, 

 p. 312. Panama. 



Genus Tapinauoubnius, Ausserer, 1871. (Plate XXXIV. fig. 21.) 



Syn. 1842. Mygale, C. Koch, Die Arachniden, ix. p. 67. 



1850. Eurypelma, 0. Koch, Uebersicht. 

 Type. T. plumipes (0. K.), d , Die Arachnidea, ix. p. 67, 

 tab. cccxi. fig. 733, 1842. In coll. Mus. Imp. BerHn. 



Oeneric Characters. 

 Anterior row of eyes straight or nearly so. Legs of first pair equal 

 to those of the fourth. Three pairs of sternal sigilla visible — 1st at 



