222 PROCEEDINGS OF THE ACADEMY OF [April, 



Sidusa femoralis n. sp. 



Head black; behind are two large oval yellow spots, leaving a median 

 black stripe. Abdomen with a broad median black stripe from base 

 to tip, tapering behind and there indented from the sides; the sides 

 pale grayish, with some black streaks; venter pale, mottled with black; 

 sternum red-brown. Leg I mostly red-brown, tarsus yellowish; 

 leg II more mottled, the patella yellowish above; legs III and IV 

 with mostly dark femora, rest pale, tips of tibia and metatarsus black. 

 Length 3.5 mm. 



From Poas Volcano, April (Tristan). 



Sidusa nigropicta Cambridge. 



Biol. C. Am. Arachn. Aran., II, 212, 1901. 



Aguas Calientes (Picado). 



Sidusa parvula Peckham. 



Occas. Papers Nat. Hist. Soc. Wise, III, 44, 1896. 



Aguas Calientes (Picado). 



Sidusa albicincta Cambridge. 



Biol. C. Am. Arachn. Aran., II, 215, 1901. 



Turrialba. 



Sidusa opima Peckham. 



Proc. Nat. Hist. Soc. Wise, 1895, 71. 



Orosi (Picado) ; Chiral Paraiso. 



Sidusa fulvoguttata Cambridge. 



Biol. C. Am. Arachn. Aran., II, 214, 1901. 



San Jose; Tiribi. 



Sidusa marmorea Cambridge. 



Biol. C. Am. Arachn. Aran., II, 211, 1901. 



La Verbena. 



Cyrene interrupta Cambridge. 



Biol. C. Am. Arachn. Aran., II, 239, 1901. 



Tejar de Cartago; Anonos; Orosi (Picado). 



Cyrene dolosa n. sp. 



Cephalothorax red-brown, eyes on large black spots, a pale median 

 stripe, and the side margins pale; the red-brown stripes are nearly 

 black under the base of the abdomen. Abdomen pale, four black 

 spots each side, the middle area very pale, some small blackish streaks 

 on the sides ; venter pale, spinnerets black, and the black continued as 

 a stripe on venter to near the middle where it ends in a sharp point ; 

 sternum pale ; legs pale, more reddish on tibiae and patellae ; mandibles 



