chamberlin: the arachnida. 243 



a third their diameter from the lower edge of clypeus. Area of median 

 eyes wider behind than in front in ratio 4:3, scarcely wider than long. 



Sternum triangular, the caudal apex narrowly truncate between 

 last coxae. Nearly equal in width and length or scarcely longer 

 (25:24). Lower margin of furrow of chelicera with four teeth of 

 which the end ones are longer than the two intervening. 



Length of female 5.5 mm. 



Locality. — Conservidayo River, August. (Type, M. C. Z. 206; 

 paratypes, M. C. Z. 319, fifteen specimens). Tincochaca, 7,000 feet, 

 August. (M. C. Z. 207, two immature specimens). 



Argiope argentata (Fabricus). 



Aranea argentata Fabr., Ent. syst., 1775, 2, p. 414. 



A very widespread species in tropical and subtropical portions of 

 the western hemisphere, occurring from the southern United States 

 to Patagonia. 



Localities. — Panama, June. (M. C. Z. 208, one immature female). 

 Huadquina, 5,000 feet, July. (M. C. Z. 209, one female). 



Gea panamensis, sp. nov. 

 ' Plate 19, fig. 8. 



Carapace brown with the sides dusky. Sternum blackish at sides, 

 a median longitudinal stripe yellow. First pair of legs with femora, 

 patellae, and tibiae black, the tibiae each with two narrow pale rings; 

 metatarsi yellow, with three black annuli; tarsi j^ellow. Second legs 

 similar to the first but femora mostly yellow marked with black espe- 

 cially distad, the third legs being like the second. Fourth legs colored 

 like the first, the femora being more nearly entirely black than that 

 of second or third. Abdomen above with a dark, wavy edged folium- 

 mark embracing a pale sagittate area in the anterior portion which is 

 limited by a dark longitudinal line; venter with a black median 

 longitudinal stripe which widens caudad to spinnerets limited by a 

 yellow line. 



Posterior row of eyes very strongly procurved; median eyes twice 

 their diameter apart or nearly so. Lateral eyes contiguous, the pos- 

 terior on each side much the larger, its diameter being about thi-ee 



