1928] 
Arthropod Fauna of Coniferous Leaders 
219 
other than the leaders. There can be no question in the case of 
Theridion rnurarium, as it has often been dissected out of the 
leaders in the fall. Mr. Emerton states that no place of hiberna- 
tion for this species has been reported previously. The indica- 
tions are that this spider invades empty weevil pupal cells in the 
fall for shelter only. 
Order Araneae 
Family Dictynidce 
Dictyna muraria Em. [Em.] Late March, April. A few half- 
grown. 
Family Theridiidce 
Theridion frondeum Htz. [Em.] April. 2 young: 
T. rnurarium Em. [Em.] April. Abundant, all half-grown. 
Family Linyphiidce 
Tmeticus bostoniensis Em. [Em.] April. 1 female adult. 
Family Argiopidce ( Epeiridce ) 
Epeira displicata Htz. [Em.] April. Common, all young. 
E. patigiata Em. [Em.] May. Several, all young. 
Family Thomisidee 
Philod,romus sp. [Em.] April. 1 young. 
P. sp. [Em.] April. 2 young. 
Family Clubionid.ee 
Clubiona abboti L. Koch. [Em.] April. 1 female adult. 
Family Agelenidce 
Agelena ncevia Walck. [Em.] April. 1 very young. 
Family Salticidee 
Mcevia vittata Htz. [Em.] Majr. 1 very young. 
Tutelina (Icius) elegans Htz. [Em.] May. 1 very young. 
Wala mitrata Htz. [Em.] April. 1 very young. 
W. palmarum Htz. [Em.J April, 1 very young. 
Order Acarina 
Family Tarsonemidce 
Pediculoides ventricosus Newport. In frass under bark, spring 
and fall. Rare to abundant. Predacious on variety of larvae in 
shoot; of no particular effect on Pissodes strobi , but highty des- 
tructive to insect cultures reared in the laborator}^. 
