1913.] NATURAL SCIENCES OF PHILADELPHIA. 679 



Singa dotana n. sp. PI. XXVIII, fig. 1. 



Cephalothorax wholly pale yellowish, also the mandibles, palpi^ 

 and sternum; legs with deep black bands on apices of all femora, 

 on tips, and partly on sides of patellae, and a fine dot near middle and 

 tip of tibiae. Abdomen gray, with some irregular blackish patches 

 on the basal part, and many silvery -white spots above and below; 

 each side of the spinnerets is a jet-black spot. 



Abdomen much broader than long and concave behind. 



Length 3 mm., width of the abdomen 3 mm. 



From St. Maria Dota, Costa Rica (Tristan). 



Related to S. abbreviata, but distinct by markings and shape of 

 the vulva. 



Argiope argentata Fabricius. 



Alajuela, Sept. 9, 1909 (Calvert). 



Mangora trilineata Cambridge. 



Juan Vinas, 2,500 feet. May 3, 1910; 3,300 feet, Oct. 5. 1909 

 (Calvert). 

 Mangora picta Cambridge. 



Juan Vinas, Reventazon Valley, 2,500 feet, in unrolled Heliconia 

 leaves. May 1, 1910 (Calvert). 



Acrosoma inaequalis Cambridge. 



Near Cartago, Feb. 1910; Juan Vinas, 3,300 feet, July 27 and 

 Sept. 29, 1909 (Calvert). 

 Acrosoma 12-spinosa Keyseriing. 



Alajuela, Sept. 6, 1909 (Calvert). 

 Gasteraoantha koohi Butler. 



Juan Vinas, ''farther waterfall," Sept. 29, 1909 (Calvert). 



SPARASSID^. 

 Selenops mexioana Keyseriing. 



Pefia Blanca, Rio Naranjo Valley, near Cache, in arboricolous 

 bromeUad, March 9, 1910 (Calvert). 



OTENID^. 

 Cupiennius coccineus Cambr. 



Described from Panama; one from Peha Blanca near Cache, 

 in arboricolous bromeliad, 19 March, 1910 (Calvert). 

 Cupiennius griseus Cambridge. 



Juan Vinas, April 29, 1910, one specimen in house (Calvert). 

 Treohalea oonvexa Cambridge. 



Quebrada de Salas, east of Atenas Station, Pacific Railroad^ 



