212 The Ohio Journal of Science [Vol. XIX, No. 3, 



immediately seized. The two lock mandibles and grasp each 

 other with their legs, venter to venter. The male inserts the 

 palpal organs alternately keeping each inserted for perhaps 

 five minutes, (Fig. 2). The accompanying Figure was sketched 

 from a pair which mated in a vial and consequently does not 

 show them in the usual position upside down. This copulation 

 occupied about fifteen minutes, during which time each bulb 

 was inserted twice. At the end of fifteen minutes the female 

 shook the male free, but showed no animosity toward him, 

 either at the time or later. 



The fact that these spiders build an orb web excludes them 

 from the Family Therididce. Of the orb- weavers which use 

 a viscid silk on the spiral threads there are only two families, 

 the Tetrag7iathid(B and the Epeiridcc. The method of copulation 

 observed in this species, corresponds closely with that observed 

 in Tetragnatha exiensa and vermiformis, and Pachygnatha 

 listeri as described by Montgomery, Emerton, Menge and 

 others. These species belong to the Family Tetragnathidce. 



All things considered, Mysema hulhijera should, I believe, 

 be placed in the Tetragnathidce and should be known as Gleno- 

 gnatha bulbijera (Banks). 



I am very much indebted to Mr. Banks for verif^ang my 

 identification of Mysmena bulbifera, and to Dr. F. E. Lutz, for 

 sending me copies of the original descriptions of Mysmena and 

 Glenognatha which were not within my reach. 



Date of Publication, February 10, 1919. 



