232 Annals Entomological Society of America [Vol.1,. 



genus (fig. 2) . In the length of the pedipalps, the male of Aty- 

 poides is of the more common type ; while Aliatypus is conspicuous 

 for the great elongation of certain segments of those organs (cf. 

 figs. 3 and 9). V 



Aliatypus californicus, Banks. (Atypoides). Jour. N. Y. Ent. 

 Soc, IV, 1896, p. 88. 



(Plate XV, figs. 1-6; XIX, figs. 3-4). 



Adult c? (Plate XIX, fig. 3) — Length 12 mm., cephlx. 5x4 mm., abdomen, 

 about 5 mm. long. Cephalothorax shiny, glabrou.s, excepting the margins which 

 are minutely black-setose, coarser than in female, pale yellow, paler than in fe- 

 male, the median line and borders of the caput olive-tinted; anterior eyes closer 

 together and eye-tuber a little more projecting than in female; chelicerae very 

 slender, not gibbose at the base as in female, but the inner edge swollen into a 

 rounded setose ridge anteriorly; abdomen grayish, finely black-setose and with 

 scattered much larger black setae, fewer and more scattered than in female; 

 sternum glossy flesh-color, darker and yellow in female; pedipalps as long as legs 

 I, coxae with small lobe, trochanters twice as long as wide, femora and patellae 

 reddish, femora very long and slender, longer than femora I, nearly straight, 

 conspicuously black-setose below on the apical half, patellae long, club-shaped, 

 long-setose below on apical half, tibiae the same, but longer and gibbous below 

 near the apex (PI. XV, fig. 3), tarsi of generalized type, bulb (fig. 4) very angular, 

 black basally, opacjue glossy white below, the broad, flat, angular spine reddish, a 

 very slender, blackish conductor extending out along edge of spine, almost to its 

 suddenly contracted tip; legs more slender than in female, coxae and femora 

 pale flesh-color below, trochanters and rest of leg-segments yellowish, tarsi and 

 metatarsi conspicuously long and slender. (Described from mv Nos. 98 and 

 100). 



I will not add further to Banks' description of the female. 

 I have collected some fifty individuals, the largest measurir 

 mm. long. 



I have not yet found this spider outside of the foothills ana 

 mountains on each side of the Santa Clara Valley, Santa Clara and 

 San Mateo Counties, but it is probably not at all limited to such 

 a small range. Mr. R. W. Doane secured the type material on 

 Black Mountain, Monto Bello Ridge, of the Santa Cruz Ranges. 

 It is common at Alum Rock Park and in the Mt. Hamilton Range 

 at least up to 2900 feet elevation. It is a trapdoor species and 

 seems to have a decided preference for fine compact sandy soil, 

 especially where exposed along streams, roadside banks, etc. 

 Where found it is usually very common. Occasionally it is found 

 in sandy adobe. It is commonly associated with Euty chides and 

 Atypoides. 



The burrow is comparatively long, simple, with simple trap- 

 door. I have seen no evidences of branches of any type, nor any 

 suggestions of extensions above the surface. The silk lining is so 

 meagre as to be practically indiscernible. The banks usually 

 have little or no vegetation upon them other than short scattered 

 moss, and the traps usually are of soil and silk only, or with a few 



