168 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



Cephalothorax : Corselet rounderl, sloping sharply behind, rather high in the middle ; 

 base of caput on a level with corselet, but depressed in front ; fosse deep ; color in some 

 specimens green, or greenish yellow, in others yellow ; sternum shield shape, almost as 

 wide as long, with slight sternal cones, colored, as also labium and maxillpe, pale yellow; 

 labium triangular; maxillae giljbous, somewhat longer than wide. 



Eyes : Fig. 13b. Ocular quad on a rounded eminence, the front wider than rear and 

 about the length of sides; MF larger than MR and black; separated by about 1.75 their 

 diameter ; ^IR separated by at least or more than two diameters. Side eyes on separate 

 tubercles whose bases are contingent, and separated by about one diameter, about equal in 

 size; MF from MR about their area, and from margin of clypeus by about 1.5 diameter; 

 front row recurved, rear row slightly procurved, and somewhat longer. 



Abdomen : A well rounded oval, a little longer than wide, skin reticulated, without 

 shoulder humps, covered rather scantily with long yellowisli bristles, color green, with base 

 liright or grayish yellow. In some specimens the green is more decided, and the yellow 

 shades into green on the dorsal field, base, and sides; no distinct folium marks the dorsum, 

 but a median line of darker green traverses the middle part of the field, from the side and 

 end of wliich issue l.)rownish lines to the apex. The venter is not distinctly marked, but 

 is covered with green reticulations, as are the sides; spinnerets distal, yellowish brown; the 

 epigynum (Fig. 13c) has a long convoluted scapus, brown below the tip, which is an oval 

 bowl ; atriolum wide at base ; semicircular portulfe show on each side, from which issue 

 rounded tongues curved like a ram's horn. 



Distribution: New England. Specimens received also from Florida, through Dr. Marx. 

 The species is no doubt distributed along the entire Atlantic Coast, and will probably be 

 found much more widely disper.sed. 



No. 27. Epeira "Wittfeldae, new species.' Plate VII, Figs, (j, 6a-tl; 7, 7a-d. 



Female: Total length, 9 mm.; cephalothorax, -t mm. long, 3 mm. wide; 1.7 at the 

 face ; abdomen, 6 mm. long, 5 mm. wide. This spider in its general characteristics reminds 

 one of E. strix. In its somewhat stout legs, strongly armed with spines, in the head and 

 eyes, the two species are much alike. The dorsum of the abdomen, however, is more 

 roundly arched in E. Wittfeldse, and the epigyna differ. The colors and general forms of 

 the two animals are also different. 



Cephalothorax : Cordate, rounded at the sides, indented behind ; smooth and glossy ; 

 sparsely provided with hairs; corselet grooves indistinct; cephalic suture distinct; fosse a 

 longitudinal slit, within a circular pit ; color yellow ; the caput reddish brown, glossy, not 

 depressed, slightly arched to the whitish face, whose margins just below the lateral eyes 

 drop into a decided dewlap. Sternum shield shape, flat in the middle, with faint sternal 

 cones, slightly pubescent, yellow. Labium wide, rounded at the sides; tip triangular; 

 maxilla? oval, obtusely triangular at tips, inclined toward each other; wider than long; 

 both of these organs yellowish brown. 



Eyes : Ocular quad on a dark brown eminence, most prominent in front, where it pro- 

 jects over the clypeus ; rear eyes but little elevated above the facial surface ; the quad is 

 decidedly wider in front than behind (Fig. 6b), and the side about equals front width ; 

 MF larger than MR, separated by about 1.5 diameter, MR but little more than a radius. 

 SF are on blackish tubercles, not gi-eatly differing, in size, separated by about a diameter ; 

 SR placed low down upon the face, so that with the four front eyes they appear to constitute 

 an aligned group ; MF sepai'ated from SF by 2 to 2.5 their intervening space, or 1.3 their 

 area, and INIR separated by a much greater relative distance from SR ; the forehead is low, 

 almost obliterated ; the clypeus shows but a narrowed space between the margin and the 

 base of the central eminence, the margin being removed about one diameter of IMF from 

 the latter; front row slightly recmved, rear row procurved. 



'Wittfeld; proper name; after the late Miss Anna Wittfeld, of Merrit Island, Florida. 



