AEANEAE 



413 



P. cinereum Wood (Fig. 652). Body gray, sometimes brownish, 

 usually with a wide lenticular mid-dorsal marking, and about 8 mm. 

 long; pedipalps 4 mm. long; length of legs, first, 20 

 mm., second, 52 mm., third, 29 mm., fourth, 36 mm. : 

 northern America, on walls, etc., rarely in the open 

 field. 



FAMILY 2. NEMASTOMATIDAE. 



Pedipalps long and prominent, with last joint 

 much shorter than the preceding one and without a 

 claw: 3 genera. 



PHLEGMACERA Packard. Mandibles directed 

 downwards and not forwards; fourth joint of pedi- 

 palp much thickened ; body somewhat compressed and 

 not spiny: 3 species. 



P. cavicolens Pack. Body 4 mm. long and 2 mm. 

 wide; eyes large and prominent; eye tubercle very 



low; a series of large 



Fig. 652 Phalan- 

 gium cinereum 

 (Weed). A, dorsal 

 aspect after the re- 

 moval of the legs ; 

 B, eye tubercle. 



transverse dark spots 



on back; movable 



finger of mandible 



with about 24 setae: in caves and similar 



places; eastern and central states. 



ORDER 7. ARANEAE.* (ARANEIDA.) 



Spiders (Fig. 653). Cephalothorax 

 and abdomen mostly 

 unsegmented and uni- 

 ted by a slender waist. 

 The body is often cov- 

 ered with hairs or 

 scales, and gray or 

 dark in color when the 

 animal lives on or near 

 the ground, but is 

 often brightly colored 

 when it lives on flowers, shrubs, or trees. Of the six pairs of appen- 

 dages the mandibles or chelicerae are the most anterior; they are two- 



* See "Catalogue of the Described Araneae of Temperate North America," by Dr. 

 George Marx, Proc. U. S. Nat. Mus., Vol. 12, 18S9. "American Spiders," etc., by 

 Henry C. McCook, 1889-1893. "Histoire Naturelle des Araigne"es," by E. Simon, Paris, 

 1897-1904, 2nd Ed. "The Common Spiders of the United States," by James H. 



Fig. 653 A, diagram of the ventral aspect of a 

 spider; B, front of head (Emerton) ; C, palpal organ of 

 male (Warburton). 1, pedipalp ; 2, mandible; 3, max- 

 illa ; 4, labium ; 5, legs ; 6, sternum ; 7, epigynum ; 8, 

 lung spiracle ; 9, tracheal spiracle ; 10, spinnerets ; 11, 

 eyes. 



