1905.] NATURAL SCIENCES OF PHILADELPHIA. 343 



from the lateral eyes as from each other and in the form of the clypeus, 

 which is only very slightly "depressed below the eyes. Keyserling in 

 his description of C. fastibilis, the type of the genus, says: "Die beiden 

 vorderenen ^lA. sind kaum um ihren Radius von einander und reichlich 

 um ihren Durchraesser von den SA. entfernt" {Spinn. Am., Therid., 

 II, p. 217). In C. electa they are more widely separated, but the same 

 proportion is maintained. 



Explanation of Plates XXVIII and XXIX. 



Plate XXVIII, Fig. 1. — Ceraticelus albus Fox. Male palpus. 

 Fig. 2. — Ceraticelus albus Fox. Tibial apophysis. 

 Fig. 3. — Ceraticelus alticeps Fox. Male palpus. 

 Fig. 4. — Ceraticelus melanocnemis Fox. Male palpus. 

 Fig. 5. — Ceraticelus rugosus n. sp. Male palpus. 

 Fig. 6. — Ceraticelus tibialis Fox. Male palpus. 

 Fig. 7. — Ceraticelus rugosus n. sp. Male palpus. 

 Fig. S. — Exechophysis plumalis n. sp. Male palpus. 

 Fig. 9. — CEdothorax oxypaderotipiis n. sp. Male palpus. 

 Fig. 10. — Ceraticelus melanocnemis Fox. Tibial apophysis. 

 Fig. 11. — Acartaucheuius columbiensis n. sp. Male palpus. 

 Fig. 12. — Diplocephalus castigatorius n. sp. Male palpus. 

 Fig. 13. — Exechophysis plumalis n. sp. Male palpus. 

 Fig. 14. — Diplocephalus castigatorius n. sp. Femur, patella and tibia of male 



palpus. 

 Fig. 15. — (Edotliorax oxypcederotipus n. sp. Epigynum from beliind. 



PL.A.TE XXIX, Fig. 1. — Exechophysis plumalis n. sp. Epigynum. 

 Fig. 2. — Diplocephalus castigatorius n. sp. Epigynum. 

 Fig. 3. — Pocadicnemis longitubus Em. Epigynum. 

 Fig. 4. — Delorrhypis unicornis Banks. Epigynum. 

 Fig. .5. — Prosopotheca transversa n. sp. Epigynum. 

 Fig. 6. — CEdothorax limatus n. sp. Epigynum. 

 Fig. 7. — -Erigone plicita n. sp. Epigynum. 

 Fig. 8. — Clitolyna electa n. sp. Epigynum. 



Fig. 9. — Acartauchenius columbiensis n. sp. Patella and tibia of male 

 palpus from above. 



