228 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D See. 



67. Thargalia dorsata, sp. nov. 



Plate XIII, Fig. 30. 



Length 9-10 mm.; tibia plus patella IV 4 mm. Cephalothorax, sternum, 

 and femora black, the former clothed with white plumose hairs; all tarsi and 

 tibias and metatarsi of anterior pairs pale, posterior tibia; and metatarsi 

 red-brown; mandibles black, with an elongate pale spot in front near the 

 tip; abdomen black, a small white spot at base followed by a broad red stripe, 

 truncate before tip, sometimes on posterior part, with serrate border, on 

 each lower side reaching forward from spinnerets is a white stripe or row 

 of spots. Anterior eye-row nearly straight; A. M. E. about their diameter 

 apart, much closer to the equal A. S. E. ; posterior row procurved; P. M. E. 

 nearly once and a half their diameter apart, closer to equal P. S. E. Legs 

 very spiny, tibia plus patella IV a little longer than cephalothorax; sternum 

 broad in front, but little longer than broad; abdomen large and broad; epig- 

 ynum shows two large depressions much less than their diameter apart. 

 The S is more reddish than the $ , and with the abdomen almost covered 

 above with red. 



Several specimens from San Jose- del Cabo, Sierra San 

 Nicolas, and Sierra San Lazaro, Sept. This species is 

 close to the true T. crocatus Hentz., but has the sternum 

 broader in front, the epigynum different, the red stripe above 

 terminates farther from the tip, and there is white on the 

 lower sides. 



68. Thargalia mexicana, sp. nov. 



Plate XIII, Fig. 38. 



Length 9 mm.; tibia plus patella IV 3.S mm. The cephalothorax, femora, 

 and sternum are red-brown, the former thickly clothed with white hair, also 

 some on the femora, other joints of anterior legs pale yellowish, of hind 

 pairs reddish, paler on tips of joints; mandibles red-brown, with a pale spot 

 on the tips; abdomen dark brown, a red-brown horny shield at base extend- 

 ing over the basal fourth of the dorsum, clothed above with black hairs and 

 white bands, one at base, a broader one just beyond, another before middle, 

 and one before tip. Cephalothorax rather slender; P. M. E. a little more 

 than their diameter apart, rather closer to the equal P. S. E.; A. M. E. less 

 than their diameter apart, much closer to the equal A. S. E. ; sternum nearly 

 oval, not broad. Abdomen nearly twice as long as broad, punctulate above, 

 a small, horny shield on venter just before the spinnerets. Legs with black, 

 simple hairs and white plumose ones; tibia plus patella IV hardly as long as 

 the cephalothorax; one spine above on tip of tibia IV. 



One female; Tepic, Oct. 



