230 PROCEEDINGS OF THE ACADEIMY OF [May, 



throughout. Median pale stripe of cephalothorax clothed with golden 

 brown pubescence with some gray behind and brown at middle part 

 intermixed; sides clothed with brown and golden brown pubescence 

 intermixed; lateral pale stripes with mostly light gray pubescence, 

 less of brown. Legs clear yellowish, the two first pairs of legs darker, 

 more reddish brown distally. Sternum and coxae of legs beneath 

 j^ellowish brown, like legs, clothed, like the legs also, with grayish 

 yellow intermixed with longer black hairs. Abdomen much lighter 

 than in typical Eastern form of helluo; dorsum with the typical mark- 

 ings, but these paler and less distinct; the venter pale yellow without 

 markings of any kind, clothed with yellow pubescence. Epigyniim 

 reddish black. Spinnerets pale brown. 



Structure and proportions and the relations of the eyes as in helluo. 

 Epigynum agreeing in detail with that of helluo (PI. XYII, fig. 1). A 

 specimen from Baj a California gave the following measurements: 



Total length, 24 mm. Length of cephalothorax, 10.2 mm. ; width, 

 8 mm. 



Length of leg I, 25.9 mm. ; tib. + pat., 9.8 mm. ; met., 5 mm. 



Ijength of leg II, 24 mm. 



Length of leg III, 23.7 mm. 



Length of leg IV, 33.8 mm. ; tib. + pat., 11 mm. ; met., 9.6 mm. 



Male. — lighter than the female. Cheliccra pale yellow with light 

 gray or whitish pubescence which is moderately long. Palpi pale 

 yellow, the tarsus not darker; tarsus clothed with dense Avhite hair, 

 which occurs also less densely upon the tibia; the patella and femur 

 clothed with yellow hair with some white more sparsely intermixed. 

 Sternum and coxce of legs pale yellow, these and the legs clothed with 

 light yellow gray pubescence with some black hairs intermixed. Abdo- 

 men with basal dark mark as usual ; middle region of dorsum yellowish, 

 clothed with gray-yellow and brown pubescence intermixed, with on 

 each side behind a row of about six spots of white hair; venter yellow 

 with hght gray pubescence. 



Tibia + patella of first legs longer than tibia + patella of fourth 

 ones. Tarsus of palpus shorter than the two preceding joints together. 

 Structure of palpal organ agreeing in detail with that of helluo (PL 

 XVII, fig. 2). 



A male from Lower California gave the following measurements : 



Total length, 14.2 mm. Length of cephalothorax, 7.6 mm. ; width, 

 6.1 mm. 



Length of leg I, 27.2 mm. ; tib. + pat., 9.8! mm. ; met., 6.3 mm. 



Length of leg II, 22.9 mm. 



