THE 
AMERICAN NATURALIST 
Vor. XXXIV. November, 1900. No. 407. 
A SINGULAR ARACHNID (KCENENIA MIRABILIS 
GRASSI) OCCURRING IN TEXAS. 
WILLIAM MORTON WHEELER. 
IN 1886 Battista Grassi? described as the representative of 
a new order a remarkable arachnid which he found near the 
base of Mt. /Etna in the campagna of Catania, Sicily. Grassi’s 
description was imperfect and seems to have excited little 
interest in his discovery till Dr. H. J. Hansen in 1893 collected 
a number of specimens of the same species in southern Italy 
(near Palmi and Scilla in Calabria) and together with Dr. W. 
Sórensen published a careful description of the external 
anatomy, with some good figures of the animal? 
During the past spring, while collecting specimens of Iapyx, 
Campodea, and Scolopendrella, in the vicinity of Austin, Texas, I 
1 Contributions from the Zoological Laboratory of the University of Texas, 
No. 8. 
2 I Progenitori dei Miriapodi e degli Insetti. Mem. V. Intorno ad un nuovo 
Aracnide Artrogastro (Kæœnenia mirabilis) rappresentante di un nuovo ordine 
(ii beayobs clas), Bull. d. Soc. entom. Italiana, pp. 153-172. Anno 18. 
Firenz 6. 
3 The Order Palpigradi Thor. (Keenenia mirabilis Grassi) and its Relation- 
ship to the other Arachnida, Entomol. Tidskr., pp. 223-240. Arg. 18 
Taf. IV. 
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