XacJidruch verboten. 

 Uehersetzungsrecht vorbehalten. 



f urther Observations on Koenenia. 



Augnsta Rucker, 



Instrnctor in Zoology, UniversiTv of Texas. 



(Contributions from tlie Zoological Laboratory of tlie I'niversitv 



of^Texas.) 



"With plates 21-23. 



I. Historieal Notes. 



"W'heii I began work ou the Texan Koenenia in the fall of 1900 

 I liad expected to cousider the internal anatomy onlv. thinking tliat 

 the external specific characters had ah'eady been described. first by 

 B. GßASsi ^) ; second by Ha^'sex t^- Sökensex -) : and third by 

 \V. M. Wheelee. •^) Scarcely had I taken np this work wheu I 

 perceived that Dr. AVheelek in discovering this Arachnid in Anstin 

 had had the good forttine to find an entu-ely uew species. At the 



1) B. Grassi . I progenitori dei Miriapodi e degli Insetti, ilem. V, 

 Intorno ad un nuovo Aracuide Artrogastro (^Koenenia mirabilis) rappre- 

 sentante di un nuovo ordine (Microthelyphomda), in: Bull. Soc. entomol. 

 Italiana, Anno 18, Firenze 1886. p. 153 — 172. 



2) The Order Palpearradi Thor. (Koenenia mirabilis Grassi) and its 

 relationship to tlie other Arachnidee, in: Entomol. Tidsskr., p. 223 — 240, 

 Ajg. 18, H. 4. 1897. 



3) A Singular Arachnid (Koenenia mirabilis GrasSI) occurring iu 

 Texas, in: Amer. Naturalist. 1900. 



