270 BIOLOGICAL SURVEY OF 



LiOBUNUM C. L. Koch 



Key to the species of Liobunum found in the 

 Mount Desert Region 



1 Femur of palp cylinclric, normal 2 



Femur of palp with an apophysis calcar (male) 



2 Trochanters much darker than coxae politum 



Trochanters about the same color as coxae . 3 



3 Femur of palp ventrally hairy longipes 



Femur of palp ventrally toothed 4 



4 Tibia of palp dorsally smooth calcar (female) 



Tibia of palp finely toothed dorsally ventricosum 



L. CALCAR (Wood). Corfield, Norway Drive. Not common. 

 Adult males appear as early as the first of July. 



L. POLITUM Weed. Duck Brook Path. Found in similar 

 situations to Caddo agilis. Rather rare. 



L. LONGIPES Weed. Found very rarely with the preceding 

 species. 



L. VENTRICOSUM (Wood). Edges of meadows and about 

 houses. Salisbury Cove, not uncommon. 



LITEEATUKE 



COMSTOCK, J. H. 1913 The Spider Book. Garden City: pp. i-xvi, 1-721, 



770 fig. 

 ROEWER, C. F. 1923 Die Weberknechte der Erde. Jena: pp. i-v, 1-1116, 



1212 fig. 



Order ARANEAE (True Spiders) 



The general classification and arrangement of genera used 

 here follows Petrunkevitch's (1928) 'Systema Aranearum.' 

 The species are arranged alphabetically under the genera. 

 The specific names, in general, agree with those of Crosby 

 and Bishop in Leonard (1928). 'The Spider Book' by Com- 

 stock (1913) furnishes the most convenient starting point for 

 the determination of our spiders. From there one proceeds 

 to the numerous papers by Emerton cited in the bibliography 

 of Comstock's book. In determining this collection of spi- 

 ders, I owe much to the personal assistance of the late 

 Mr. J. H. Emerton and to the collection of New England 

 spiders which he deposited in the Boston Society of Natural 

 History. 



