60 NATHAN BANKS. 



3. Anterior femora darker than rest of legs, especially in the male 4. 



Anterior femora paler than anterior metatarsi and tiirsi. . • .coloradeusis. 



4. Cephalothorax brown, % palpal bulb conically swollen at base- • -porfVeta. 

 Cephalothorax paler, % palpal bulb not swollen at base iiioiitaiia. 



5. Body pale, covered with golden scales, legs almost wholly white agilis. 



Body dark, with dark scales, legs dark 6. 



6. P. M. E. less than diameter apart, no lines on the legs COllStricta. 



P. M. E. fully their diameter apart, legs lined 7. 



7. P. M. E. not once their diameter from p. s. e palliditarsus. 



P. M. E. much more than their diameter from p. s. e 8. 



8. Cephalothorax pale yellow-brown luiigipes. 



Cephalothorax dark brown foriliii'Oides. 



£ilica bicolor nov. sp. — Length 3.5 mm. Cephalothorax and legs reddish, 

 the former blackish on the margin ; legs more yellowish ; abdomen black, sternum 

 pale yellowish : cephalothorax nearly once and a half longer than broad, low, 

 clothed with scattered black hairs, some longer ones on clypeus; anterior row of 

 eyes about straight ; a. m. e. less than their diameter apart, still closer to the very 

 much larger a. s. e. ; posterior row slightly longer than anterior one, distinctly 

 recurved, the p. m. e. fully their diameter apart, closer to the slightly larger 

 p. s. e. ; m. e. ecpial, forming a quadrangle as high as broad behind ; mandibles 

 quite large and stout, slightly porrect, a broad tooth below. Legs moderate, 

 patella plus tibia i shorter than cephalothorax. spines above on femora and some 

 below on tibiae and metatarsi, tarsi about as long as metatarsi ; sternum oval, 

 pointed behind between hind coxse. Abdomen once and a half longer than broad, 

 broadest behind the middle, depressed, slightly truncate at base, broadly rounded 

 behind ; the % palpus has a prominent curved spine at outer tip of tibia, the 

 palpal organ is divided obliquely into two lobes, the lower one bearing a short, 

 stout, curved hook, from the ti]) arises the slender tube, it is twisted at base, then 

 makes one nearly complete circle as large as the palpal organ. 



Cue male, Punta Gorda, Fla. (]\Irs. A. T. Slosson). 



Ciillilepiii^ pltito nov. sp.— Length 5.5 mm.; cejjh. '^.4 mm. long, 1.8 mm. 

 wide; tibia, plus patella i, 1.9 mm. ; tibia, plus patella iv, 2.G mm. Cephalothorax 

 (>ark red-brown, nearly black, lineated with black ; mandibles, palpi and legs 

 similar, tarsi of legs paler; .sternum nearly black. Abdomen black, .spinnerets 

 dark red-brown; abdomen with yellowish hair above; a. m. e. separated by more 

 than their diameter, and much closer to the larger a. s. e. ; po.sterior row recurved, 

 no longer thiin the anterior row, from which it is widely separated ; \>. m. e. oval, 

 about their diameter ai>art, not quite so far from the larger p. s. e. ; mandibles 

 with a plate beneath the fang; sternum nearly as broad as long. Legs quite 

 bristly, tibia i with five spines beneath, tibia iv with one spine above near the 

 base. Abdomen depressed, once and a half longer than broad, rounded at base; 

 the epigynum is broader than long, semicircular in outline, from the posterior 

 margin there extends forward on each side a narrow, curved, pointed i)iece. 

 reaching nearly to front margin, leaving on each outer side a slender channel, 

 and in the middle between the two jjieces a large cavity, which is almost filled by 

 a pear-shaped body. 



One female, Olympia, Wa.shingtou (Trevor Kincai'.l). This spe- 

 cies, at first sight, resembles Prosthedma aira Htz., but is readily 

 .separated l)y the structural ciiaracters. 



