THE MOUNT DESERT REGION 519 



TlIERIDIIDAE 

 Crustulina Menge 



C. altera Gertsch and Archer. Under stones, uncommon, The 



Hop. 

 C. boeealis Banks. Penikese, one female, July 27. 



Ctenium Menge 



C. riparia (Keyserling). Great Head, sifting, female, 

 August 11. 



Dipoena Thorell 



D. niger Emerton. Station F412, Town Hill, August 6. 



Enoplognatha Pavesi 



E. puritaxa Chamberlin and Ivie (marmorata Emerton). 

 Lake Wood, one female. 



Euryopis Menge 



E. fuxebris Hentz. Head of Somes Sound, May 23. 



Rhomphaea L. Koch 



R. fictilium (Hentz). One specimen, Mount Kebo. One 

 immature male, S66. 



Steatoda Sundevall 



S. bipuxctata (Linnaeus). An European species, recorded 

 sparingly from the northeastern United States and Canada, 

 probably now established. Female, the Laboratory, the 

 Shack, in old abandoned cellar, dim light, at Indian Point, 

 S60, July 20-September 16, one male in Laboratory with 

 Agelcnopsis potteri in web. 



S. borealis (Hentz). In sheltered crannies about houses, 

 quite common. Adults taken from July 1 to middle of 

 September. Bar Harbor, Hulls Cove, Salisbury Cove. 

 Young female, Corfield, July 10, 1935. Female from under 

 spruce bark, Boyd Path, October 4, 1935, Bass Harbor, 

 August 21 (Britcher). 



