268 BIOLOGICAL SURVEY OF 



Group HOMOSPHYRONIDA 



Suborder MONOSPHYRONIDA 



Cheliferoidea 



Chernetidae 



Chelanops Nicolet 



C. SANBORNi (Hagen). Under stones and logs, in damp 



places. Shore of Lake Wood, Duck Brook Path, Salisbury 



Cove, and Corfield. Our most common species. 



Cheliferidae 

 Chelifer Geoffroy de St. Hilaire 

 C. CANCROiDES (Linue). One specimen taken in a house, 

 August 10, 1931. 



LITERATURE 



Chamberlin, J. C. 1930 The arachnid order Chelonethida. Stanford Univ. 

 Publ. Sci., vol. 7, pp. 1-284, 71 fig. 



Order PHALANGIDA (Opiliones) 

 (Harvest Spiders) 



For this small group of species, it seems better to give keys 

 rather than to refer to the somewhat scattered literature. 

 Roewer in his monograph (1923) describes all the species, but 

 the work is naturally rather unwieldy for occasional consulta- 

 tion. Comstock (1913) is also very helpful. 



Suborder PALPATORES 

 Phalangiidae 



Key to the genera found in the Mount Desert Region 



1 Claw of the palp pectinate Liohunum 



Claw of the palp not pectinate 2 



2 Basal segment of chelicera armed with a ven- 



tral spine . 3 



Basal segment of chelicera unarmed Phalangium 



3 Optic tubercle as wide as head Caddo 



Optic tubercle less than one-third as wide as 



head Odiellus 



