418 PROCEEDINGS OF THE ACADEMY OF [^3', 



Fig. 16. — Simple organ Xo. 1 from coxa of first leg of Th. tepidariorum. 



Fig. 17. — Organ Xo. 9 on patella of palp of Th. tepidariorum. 



Fig. IS. — b organ No. 9 and a its associated slit on patella of second leg of 



Th. tepidariorum. 

 Fig. 19. — Simple organ on spinneret oi Epeira. 

 Fig. 20. — Organs Xos. 1-1 and 15 on cheliceron of Htjptiotes. 

 Fig. 21. — Slits from labium of Ariadna. 

 Fig. 22. — Slits from female Pholcus near epigynum. 

 Fig. 23. — Organ Xo. 8 on patella of palp of Th. tepidariorum. 

 Fig. 24. — Organ No. 5 on femur of second leg of Th. tepidariorum. 

 Fig. 25. — Organ on fifth joint of palp of Moggridgea. 

 Fig. 26. — Organ Xo. 2 on trochanter of palp of Th. tepidariorum. 

 Fig. 27. — Organ Xo. 1 on coxa of palp of Th. tepidariorum. 

 Fig. 2S. —-Organs Xo. 16 and 17 on cheliceron of Dictyna. 

 Fig. 29. — Single slits with hairs on first joint of spinneret of Evagrus. 

 Fig. 30. — Organ Xo. 4 from trochanter of third leg of Th. tepidariorum. 

 Fig. 31. — Single slit marked a in figs. 13 and 14. 

 Fig. 32. — a is single slit marked c on legs: b is the slit marked c on ventral 



side of palp; c is slit called d on dorsal side of palp. See figs. 13 and 14. 

 Fig. 33. — Compound organ on spinneret of Tamo. 

 Fig. 34. — a is slit called e on palp ; b is slit marked / on palp ; c is slit marked 



/ on first leg. See figs. 13 and 14. 

 Fig. 35. — Organ Xo. 1 on coxa of third leg of Moggrid 

 Fig. 36. — Slits from pedicle of Moggridgea. 



Fig. 37. — a is slit marked m on first leg; b is slits on same leg in figs. 13 and 14. 

 Fig. 38. — Organ Xo. 5 on femur of palp of Tit. tepidariorum. 

 Fig. 39. — Slits marked h on maxilla in fig. 13. 

 Fig. 40. — Transverse organ on fifth joint of palp of Moggridgea. 

 Fig. 41. — Organ Xo. IS on pedicle of Th. tepidariorum. 

 Fig. 42. — Slits marked i on sternum in fig. 13. 

 Fig. 43. — Two organs in front of epigynum of Calculus. 

 Fig. 44. — a is slit marked j near epigynum : b is slits k on spinneret in fig. 13. 

 Fig. 45. — Organ Xo. 12 on tibia of second leg of Th. tepidariorum. 

 Y\k. 46. — Slits from cephalothoracic shield of Ariadna. 

 Fig. 47. — Organ with two isolated slits in front of epigynum of Dijsdera. 

 Fig. 48. — Organ on fifth joint of palp of Moggridgea. 

 Fig. 49. — Organ on tarsus of second leg of Hypochilus. 

 Fig. 50. — Slits marked g on cheliceron of fig. 13. 

 Fig. 51. — a and b organs 14 and 15, respectively, on cheliceron of Th. tepi- 



elariorum. 

 Fig. 52. — Organ Xo. 2 from trochanter of first leg of Th. tepidariorum. 

 Fig. 53. — Organ Xo. 2 from trochanter of second leg of Th. tepidariorum. 

 Fig. 54. — Slits near epigynum of Moggi-idgea. 

 Fig. 55. — a and e organ Xo. 16 and it- associated slit : b Xo. 17 on cheliceron 



of Th. tepidariorum. 

 Fig. 56. — Organ on fifth joint of palp of Moggridgea. 

 Fig. 57. — a and b organs Xos. 10 and 11, respectively, from tibia of second 



leg of Th. tepidariorum. 

 Fig. 58. — a organ Xo. 7 and 1> X'o. S on patella of third leg of Th. tepidariorum. 



