20S 



THE CANADIAN ENTOMOLOGIST. 



Argyrodes frofitatus, n. sp. — Cephalothorax yellowish, a median 



blackish mark behind eyes and 

 on the sides ; legs pale, tips of 

 joints blackish ; sternum pale ; 

 abdomen grayish or silvery, 

 densely marked with blackish 

 spots, mostly on the sides ; above 

 is a narrow median black stripe 

 from base two-thirds of the way 

 to tip ; venter pale. A. M. E. 

 large, about diameter apart ; P. 

 M. E, smaller, more than two 

 diameters apart. Femur i as 



Fig. 9.— Theridium interruptum : dorsum of abdomen lOUg aS abdomen, the latter COU- 



(on left); Argryrodes rostratus : head of male -n ^ jji ii-i- 



(upper right hand); Argyrodes frontatus : ICally extended abOVC behmd, in 

 head of male (lower right hand). • j • -. • ^ • 1 1 



side View it is triangular, the tip 

 is rather broad and very plainly emarginate. Abdomen of male less 

 extended above, but also emarginate at tip. The head of male has two 

 short median processes ; one on clypeus extending upward, and one above 

 M. E., both bearing stiff hairs at tips. (Fig. 9.) 



Length, ^, 3.1 mm; ^, 2.7 mm.; femur i, 9, 2.4 mm. 



From Ocean Springs, Miss., Jan. (Prof. Comstock.) 



Argyrodes deconis, n. sp. — Cephalothorax dark brown ; palpi mostly 

 black ; legs yellowish, marked with dark broivn on black ; femora i brown, 

 leaving only a pale streak each side at base ; patella brown, except above; 

 tibia brown on apical third, shading off into pale ; tip of metatarsus dark ; 

 leg ii similar, but with less dark; leg iii mostly pale, only dark at tips of 

 joints ; iv mostly pale, but dark on outside of femur. Abdomen with a 

 broad black stripe above, from base to tip, with a cross-bar somewhat 

 before the tip ; venter black, the black extending up each side above 

 spinnerets ; the abdomen behind, parts of the sides and above are silvery, 

 or with some golden colour. Cephalothorax quite flat, head but little 

 elevated ; A. M. E. large, about one and a half diameter apart, and as far 

 from the smaller S. E.; P. M. E. searcely two diameters apart; femur i 

 longer than abdomen, the latter greatly prolonged above behind, so that 

 the posterior side is twice as long as the venter ; tip rounded. 



Length of 9 , 3.2 mm.; height of abdomen, 3.3 mm.; length of femur 

 i, 2.9 mm. 



From San Pedro, California. 



