ARANEAE 



431 



Fig. 678 Agelena 

 ncevla (Emerton) 



A. naevia Walck. Grass spider (Fig. 678). Body 18 mm. long or 

 less, and yellowish brown, or black in color, with gray or dark markings 

 and spots on the abdomen and broad longitudinal stripes on the cephalo- 

 thorax, and covered with fine hairs: the very 

 common spider which makes flat webs in the 

 grass which are conspicuous when covered by 

 dew; also in houses. 



2. CORAS Simon. Rows of eyes not curved 

 or but slightly so; anterior median eyes much 

 larger than the lateral: 1 species. 



C. medicinalis (Hentz) (Fig. 679). Body 

 12 mm. long, light yellowish-brown in color and 

 covered with gray hairs; abdomen large and 

 oval and marked with gray 

 spots of irregular shape: in 

 woods among rocks and under 

 loose bark, the web is not flat, 

 but is usually curved in sev- 

 eral places. 



3. TEGENARIA Latreille. Eyes all of the same 

 size, both rows curved, the forward row but slightly; 

 legs long and slender: about 7 American species. 



T. derhami (Scopoli). Body 10 mm. long, pale 

 in color, with gray stripes and spots; first and fourth 

 pairs of legs the longest: in cellars, barns, etc.; the 

 web often forms a thick shelf in the 

 corner; very common, having been im- 

 ported from Europe, it and Theridion 

 tepidariorum making most of the corner 

 webs in cellars. 



4. HAHNIA Koch. Spinnerets extend across the abdo- 

 men in a straight or curved line; anterior middle eyes 

 smaller than the lateral: about 6 American species. 



H. agilis Keyserling (H. bimaculata Emerton) (Fig. 

 680). Length 3 mm.; cephalothorax bright orange brown 

 in color and the legs and abdomen pale yellowish with gray markings: 

 common under stones and leaves or among grass and moss. 



FAMILY 13. PISAUBIDAE. 



Eyes in 3 rows; cocoon earned in the mandibles of the female; 

 cephalothorax broad and flat: ground spiders of large size similar to the 

 Lycosidae; about 18 American species. 



Fig. 679 Coras 

 medicinalis 

 (Emerton). 



Fig. 680 



HaJinia agilis, 



ventral aspect 



(Emerton). 



