180 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



indistinrt suggestion of a folium. The epigynnm diflTers in the greater length and decided 

 convolution of the scapus. The cochlear in E. miniata is more prolonged and slightly 

 compressed in the middle, while that of E. Mayo is almost a circular bowl. The leaf like 

 appendages of the atriolum in E. miniata are wanting, or at least are folded down, in E. Mayo. 

 Distribution : Two females, one in my collection from AVisconsin and one in the Marx 

 Collection from Minnesota. The known patria is thus the Northwestern United States. 



No. 38. Epeira bispinosa Keyserling. Plate IX, Figs. 3, 3a-b. 



1884. Epeira bispinosa, Keyserling . . Neue Spinn. Amerik., vi., p. 531, xiii., 30. 

 1892. Epeira bispinosa, Keyserling . . Spinnen Amerik. Epeir., p. 124, vi., 92. 



Female : Total length, 5 mm. ; cephalothorax, 2.5 mm. long by 2.1 mm. broad ; abdomen, 

 3.5 to 4 mm. long by 4.5 to 5 mm. wide at the base. Colors, fore part of body brown, 

 abdomen yellow. This spider is distinguished from E. miniata liy the arrangement and 

 relative size of the eyes, especially of the middle group, the midfront eyes of Bispinosa 

 being almost twice as widely separated as those of Miniata and decidedly smaller; the 

 ocular quad is relatively wider in front than rear, and the clypeus much higher. The legs 

 also are annulated, and the epigynum has a longer and more convoluted scapus, like E. Mayo. 



Cephalothorax : A long oval ; the crest high ; corselet brown, with a lighter marginal 

 band ; caput yellow, flecked with brown ; the whole sparsely covered with hair. Sternum 

 almost as broad as long; raised in the middle; with decided cones; yellowish brown color; 

 labium long, subtriangular. 



Legs: 1, 2, 4, 3, as follows: 9.4, 8.10, 5.2, 7.3 mm. Color, yellowish brown, with annular 

 markings; well provided with hairs, bristles, and spines. 



Eyes: Ocular quad on a well rounded prominence, the sides about equal to front, the 

 latter wider than rear ; MF separated from 2 to 2.5 times their diameter, and are much 

 smaller, from one-third to one-half, than MR, which are separated from one another about 

 a diameter and a half The side eyes on prominent tubercles, well separated ; SF somewhat 

 larger than SR, and about or a little more than the size of MF, from which they are 

 divided by about the area of MF. Front row recurved, rear row longer and slightly pro- 

 curved ; clypeus is high, aliout the space lietween MF. 



Abdomen : Triangular ovate ; with prominent shoulder humps, basal front subtriangular ; 

 dorsum arched from crest to distal spinnerets ; color yellow, surface reticulated, lines of 

 brownish color extending longitudinally in the middle of the dorsum, and laterally along 

 the sides and underneath to the venter; ventral pattern squarish, yellow, reticulated, and 

 bordered with brown ; spinnerets dark brown, mottled at the edges with whitish and yellow 

 spots. The sides are yellow, with alternate black and white, running vertically from the 

 venter to the dorsum. The epigynum (Plate IX., 3b) has prominent bowl shaped portulw; 

 the scapus long, much sinuated, and terminates in a wide spooned bowl. 



Distribution : Southern California ; Fort Yuma, Ariz. (IMarx Collection) ; Keyserling 

 locates it in Central America, Panama, and Hayti. The specimen is probably widely dis- 

 tributed throughout the semitropical parts of North America. 



No. 39. Epeira Paciflcae, new species. Plate XI, Figs. 15, 16. 



Female: Total length, 5 mm.; abdomen, 4 mm. long, 4 mm. wide; cephalothorax, 

 2 mm. long, 1.5 mm. wide. 



Cephalothorax : Oval ; corselet well rounded at the edges, rather high in the middle, 

 sharply sloping backward, caput inclined forward to the face; corselet grooves distinct; 

 cephalic suture decidedly marked ; color, dark brown, with flecks of yellow on the median 

 base; grayish white hair rather sparsely distributed over the surface. The caput is strong, 

 squarish, wide at the face, well rounded, colored as the cephalothorax, with a yellow patch 

 at the eye space; sprinkled with gray hairs, more abundant upon the face and eyebrows. 

 Sternum shield shape, not greatly pointed at the apex; longer than liroad ; sternal cones 



