MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 153 



Fig. 2. Chelicer of au example marked from Mammoth Cave ; 2a, hand of the same, enlarged ; 26, pedipalp of 



the same ; 2c, two terminal joints of the same. 

 Fig. 3. Phalaugodes robusta Pack. — Chelicer; 3a, hand of the same; 36, pedipalp of the same. 

 Fig. 1. Drawn by J. H. Emerton ; the remainder by the author. 

 Note. — Iu reproducing the more delicate and slender appendages, such as the legs, the lithographer, in 

 tracing the sketches, has made them somewhat thicker and clumsier than in the original drawings. 

 This will also apply to the antenna? on Plates VI to IX, etc. 



Plate XIII. 



Fig. 1. Phalaugodes armata (Tellkf.), male, from the Labyrinth, Mammoth Cave. — 16, chelicer; 16', the hand of 

 the same ; le, a pedipalp, 9 ; Id. a leg of the second pair, 18 mm long ; le, le', one of the third (?) pair of 

 legs ; If, tarsus of one of the fourth pair of feet ; Ig, penis (the shaded portions should have been left 

 clear); 1/;, ovipositor, 1.5 mnl long. 



Fig. 2., Phalaugodes spinifera Pack., from Florida. — Chelicer ; 2a, a pedipalp ; 26, a leg of the first pair, 4. 5 mm long 

 2c, a leg of the second pair, 9 mm long. 



Fig. 1 drawn by J. H. Emerton ; Figs. 16 to 2c drawn by the author with the camera. 



Plate XIV. 



Fig. 1. Phalaugodes, sp. X2 times. — The caveic inhabits and the species not determined. Emerton del. 

 Fig. 2. Phalaugodes robusta Pack.— One of the second pair of legs, 2 ; 2a, basal joint ; 26, tarsal joints. 

 Fig. 3. Nemastoma troglodytes Pack. — A chelicer; 3a, a pedipalp; 3a', its basal joint; 36, 36', one of the second pair 



of legs. 

 Fig. 4. Nemastoma inops Pack.— A chelicer; 4a, pedipalp; 46, a leg of the second pair; 4c, 4c', a leg of the fourth 



pair. 

 Fig. 5. Phlegmacera cavicolens Pack., x3, (Emerton del.) — 5a, 56, 5c, chelicer; bd, pedipalp; 5e, leg of the second 



pair; 5/, uiue terminal joints of the same; 5g, leg of first or third pair. 

 All the figures, except 5, drawn by the author. 



Plate XV. 



Fig. 1. Anthrobia mammouthia, $. 



Fig. 2. Anthrobia mammouthia, 2> under side. 



Fig. 2. Anthrobia mammouthia, palpus of $. 



Fig. 4. Anthrobia mammouthia. 2 , side view. 



Fig. 5. Anthrobia mammouthia, front of head and mandibles. 



Fig. 6. Anthrobia mammouthia, foot of first pair. 



Fig. 7. Linyphia weyeri, $. 



Fig. 8. Linyphia weyeri, ni axilla} and mandibles of <J. 



Figs. 9, 10. Linyphia weyeri, palpus of $ 



Fin. 11. Linyphia weyeri, epigynum. 



PlG. 12. Linyphia weyeri, foot. 



FlG. 13. Linyphia incerta, $. 



Fig. 14. Linyphia incerta, 2 maxillie. 



FlGS. 15,16. Linyphia incerta, palpus of $ . 



Pig. 17. Linyphia incerta, epigynum. 



Fig. 18. Linyphia incerta, eyes of 2> from Fountain Cave. 



FlG 19. Linyphia incerta, foot. 



l'i',. -20. Linyphia incerta, $ , side view. 



Fig. 21. Linyphia incerta, S, front of head and mandibles. 



Fig. 22. Nesticus pallidas, 2- 



FlG. 23. Nesticus pallidus, 2 , under side. 



Fig. 24. Nesticus pallidus, 2, side view. 



Fig. 25. Nesticus pallidus, 9, foot. 



FlG. 2fi. Nesticus pallidus, palpus of $. 



FlG. 27. Nesticus pallidus. epigynum. 



FlG. 28. Nesticus carteri, 2, epigynum. 



FlG. 29. Linyphia subterrania, 2, under side. 



Fig. 30. Linyphia subterranea, 2, front of head and mandibles. 



Fig. 31. Linyphia subterranea, 9, side view. Figs. 1 — 31 drawn by J. H. Emerton. 



Fig. 32. Willibaldia carernicola Keys.; 32a, bead from in front; 326, epigynum. Marx del 



Fig. 33. Erigonc infemalis Keys.; 33a, head; 336, epigynum. Marx del. 



