1908] Araneae Theraphosae of California 217 



complete ring running out upon the curved spine (Plate XIII, fig. 19). I>egs 

 rich tawny above, dulled by an olive tint over the areas beset with stout black 

 setae, paler below; tarsi I and II unarmed below, scopulate, metatarsi I thinly 

 scopulate, with basal half bent, with four apical spines and a low conical pro- 

 jection near the middle of the outer edge, metatarsi II scopulate, with four 

 apical, one inner lateral, and three outer lateral spines, tibiae I and II with 

 apical and lateral spines (no comb nor spur as in E. guadalupensis) and the 

 numerous spinose setae common to all the joints except the tarsi; tarsi III 

 and IV unarmed, thinly scopulate below, slender setose above, metatarsi III 

 and IV with four a])ical spines, and two lateral and one median rows of slender 

 spines, tibiae III and IV with several more scattered spines, patellae III and 

 femora IV as in female, but the setae more robust, making the spines less con- 

 spicuous. Tarsal claws as in female, but the teeth relatively longer, more slender 

 and conspicuous. (Described from the single individual taken.) 



Altho this species belongs in Eutychid.es rather than in any- 

 other described genus, there are certain characters which may be 

 considered by some as sufficient basis for a new genus; but I 

 think it best to leave the matter as herein considered, at least 

 until opportunity is had to examine the Mexican species of the 

 genus. 



The burrow of this species is long and narrow, with usually 

 one of two types of a lateral branch, and a thin "wafer" trap- 

 door at the surface. In adobe soil, or compact sand, the branch 

 is generally below the upper third of the burrow and is a very neat 

 lateral chamber, about three centimeters long (with adult spiders) 

 10 to 12 mm. diameter within, with a circular sharp-edged open- 

 ing (5 to 8 mm. diameter) into the main tube, which is enlarged 

 at this place. In soft loamy soil in wooded canons and along 

 streams, the branch is usually near the surface, is of less definite 

 size and shape, and joins the main tube by a larger, less regular 

 opening, the whole branch having the appearance of being the 

 old abandoned upper end of the nest. Such it may be, but it 

 evidently serves the purpose of the lateral chamber, for in no case 

 have I found below the neater, more horizontal chamber. In 

 only one case have I found the spider in the chamber. It is not 

 closed by a trap door. The burrow is well lined thruout with an 

 opaque-white sheet of silk, a whiteness which I have learned to 

 recognize as belonging to this species, in comparison with the 

 other trapdoor species found here. On wooded hillsides and 

 along thicketed banks, where the species is apt to be most abun- 

 dant, and where much dead grass, fallen leaves, and other vege- 

 table debris occurs, the silken tube is frequently extended up 

 thru the loose mass for from one to eight centimeters, supported 

 and decorated on the outside by whatever may be near, weed- 

 stems, dead grass, loose soil, moss, leaves, etc., but alwa^'s the 



