Zool.— Vol. I.] BANKS— MEXICAN ARACHN1DA. 25 1 



more prominent spinule; M. E. on a slight elevation. Legs short; femora 

 curved near tip. Abdomen not very high, extending over the basal part of 

 the cephalothorax, plainly broader than long. The epigynum consists of a 

 small transverse at the margin of the rima genitalis. 



Two specimens from La Chuparosa. Distinguished from 

 O. bisaccatiis Em., by the processes on the cephalothrax 

 being truncate at tip, and by its much larger size. 



153. Ordgarius corpulentus, sp. nov. 



Plate XV, Fig. 8. 



Length 9 13 mm.; abdomen, broad 10 mm., high 10 mm. Cephalothorax 

 blackish in the front and elevated part, with the tubercles tipped with yellow, 

 behind pale. Abdomen dark grayish, markings not distinct; venter yellowish; 

 sternum and coxae reddish; femora and tibia? of legs reddish, darkest on an- 

 terior pairs, tarsi and metatarsi yellowish. Legs clothed with long white 

 hair. Eyes as usual; cephalothorax gradually elevated, at the ridge divided 

 into four lobes, the median pair smaller and barely higher than the lateral, 

 terminated with two large blunt tubercles; a number of scattered blunt tu- 

 bercles in front, some as large as those on the ridge. Abdomen high, glo- 

 bose, with two widely separated, conical projections above. 



One specimen; San Jose del Cabo, Sept. This species 

 is related to O. conigerus Hentz., but is larger and has tu- 

 bercles on the anterior sides as well as the pars cephalica, 

 all tipped with yellow; the median elevation is barely higher 

 than the sides, and not furcate; the legs have no bands; 

 and the projection above on abdomen is taller, but not of 

 greater diameter. 



154. Epeira u-tuberculata Keys. — One specimen ; Tepic. 

 Near to E . spicata Cambr. 



155. Epeira perplexa, sp. nov. 



Plate XV, Fig. i. 



Length ? 11 mm.; abdomen, broad, 7.5 mm. Clothed with short stiff 

 white hair. Cephalothorax dull yellowish; mandibles pale; legs yellowish, 

 anterior femora reddish, a dark band on middle and tip of hind femora, and 

 spots beneath at tips of the joints, more prominent on the hind pair, all tarsi 



