232 HN'IOMOT.OGISK TIDSRRIKl I 90 I . 



])ublished fiirtlier information on Kocuoiia in »The American 

 Naturalist» for Aiit^ust. 1 attempted in vain to procure tlie 

 number in cjuestion in due time. I5ut later on (Nov. 2) I re- 

 ceived a separate copy kindly sent me by Miss Rucker, and I 

 am now able to insert a review just before the manuscript is 

 sent to Stockholm. In the treatise itself I have only altered the 

 name of the founder of K. Whcclcri and added the footnote 

 on p. 1 98. 



Miss AuGus'JA Rucker's paper is entitled: The Texan 

 Koeuenia (The Amer. Naturalist, Vol. XXXV, August 1901, No. 

 416, p. 615 — 630; with six tigures in the text). Miss R. propo- 

 ses the name A. icJwi'lcn for the species to which the larger spe- 

 cimens described by Prof. Wheeler belong, and her paper being 

 published about one month before that of Mr. C. Eigner, the 

 species must be named A'. Whcclcri Rucker instead of A'. 

 Wlicclcri Borner. (This alteration is made in my text, but the 

 plates being finished before I saw the paper I could not alter 

 the name on pi. 2 and pi. 3). Furthermore she proposes the 

 name K. pawn la for the small specimen decribed and partly 

 figured by Prof Wheeler and mentioned above on ]). 195, but 

 no further information is given on this curious species. 



Miss Rucker writes on p. 616: »In the beginning I may 

 say we have been more fortunate than Drs. Hansen and Sören- 

 .SEN in being able to distinguish the two sexes. It hardly seems 

 possible that the males of Grassi's species could be so rare 

 when they are so abundant in our species.» But this mode of 

 writing is, speaking gently, rather bold. Prof. Wheeler believed 

 that the male was the female; already in May, shortly after the 

 arrival of the six specimens from Texas, I discovered the diffe- 

 rences between the two sexes in K. Whcclcri. All the specimens 

 of A', mirabilis seen by me are females, and Mr. Körner, who 

 has collected a rich material (several times more than I had 

 secured) of this species in Southern Italy, has not found any 

 male specimen. But if I should obtain new material with males 

 and females of A', »lirabilis (or any other of my species), I 

 think to be able to distinguish the sexes. — Miss Rucker writes 

 besides on the same page: »A young Danish zoologist has recently 

 found in Siani a distinct species of Koeuoiia which Dr. Hansen 



40 



