1901.] NATURAL SCIENCES OF PHILADELPHIA. 597 



EXPLANATION OF PLATE XXXIII. 



Fig. 1. — Pachylomerus modesius, palpus. 



Fig. 2. — Prosthesima cockerelli. vulva. 



Fig. 3. — Prosthesima cockerelli, \yA\^ns. 



Fig. 4. — Onaphosa hirsutipes, vulva. 



Fig. 5. — Thargalia modesta, vulva. 



Fig. 6. — Meriola inornata, vulva. 



Fig. 7. — Tmeticus perplexus, palpus. 



Fig. 8. — Microneta soltaui, palpus. 



Fig. 9. — Letliia trivittata, vulva. 



Fig. 10. — LetJiia trivittata, palpus. 



Fig. 11. — Ceratinella occidcntnUs, venter. 



Fig. 12. — Ceratinella occldentalis, vulva. 



Fig. 13. — Microneta soltaui, vulva. 



Fig. 14. — Tmeticus brevipalpus, palpus. 



Fig. 15. — Xysticus bicuspis, palpus and vulva. 



Fig. 16. — hillenes cockerelli, palpus. 



Fig. 17. — Pelhnes cockerelli, vulva. 



Fig. 18. — Phidippus tyrelli, palpus. 



Fig. 19. — Xysticus montanensis, vulva. 



Fig. 20. — Fuentes vittata, vulva. 



Fig. 21. — Icius neomexicanus, palpus. 



Fig. 23. — Oayenna marginalis, vulva. 



