626 
Willis and Bur kill.— Flowers and 
stigmas are then left to be fertilized by some outside agent The stamens 
are of three lengths, respectively 4 , 5, and 6 mm., the shortest are the 
innermost before the petals, the longest those before the sepals. Honey is 
abundant and protected by hairs. 
Visitors . Hymenoptera. Aculeata : Apidae : (1) Andrena ? analis Panz., sh. 
19. VI. 96. Petiolata parasitica. (2) 1 sp., sh. 27. VI. 96. Diptera. Empidae : 
(3) Empis bilineata Lw., 4. VII. 95. (4) E. stercorea L., sh. 1. VII. 95. Chirono - 
viidae : (5) Ceratopogon sp., sh. 18-27. VI. 96. Tipulidae : (6) Limnophila lineolella 
Verrall, sh. 5. VI. 95 ; 18. VI. 96. Anthomyiidae : (7) Hyetodesia incana W., sh. 28, 
VI -r. VII. 95; 18. VI.-4. VII. 96, fairly freq. Coleoptera. (8) Meligethes 
viridescens F., sh. 18. VI. 96. (9) M. aeneus F., sh. 1. VII. 95. All at 800 ft. 
Class AB, § 57. Parnassia Type. 
215 . Parnassia palustris, Linn. [Lit. Brit. 23,39; N.C.E. 1, 11, 14, 
24, 25, 34, 35, 40 ; Arct 36 ; Alps 2, 9 ; Pyren. 17.] 
Visitors. Hymenoptera. Aculeata: Formic id ae : (1) Formica fusca Latr., 
seeking h. 16. IX. 95, 12-1,300 ft. Myrmicidae : (2) Myrmica rubra L., sh. and 
seeking h. 16. IX. 95, 12-1,300 ft. Petiolata parasitica. Ichneumonidae : (3) 1 sp., 
sh. 1 6. IX. 95, 1,300 ft. Braconidae : (4) 1 sp., 16. IX. 95, 1,300 ft. Diptera. 
Cecidomyiidae : (5) Cecidomyia sp., sh. 16. IX. 95, 1,200 ft. Anthomyiidae : 
(6) Hyetodesia incana W., fp. 16. IX. 95, 1,200 ft. (7) Trichophthicus sp., 16. IX. 
95, 1,200 ft. (8) Anthomyia sp., 13. IX. 95, 700 ft. Cordyluridae : (9) Scatophaga 
stercorea L., sh. 16. IX. 95, 1,300 ft. Coleoptera. (10) Meligethes viridescens F., 
sh. 16. IX. 95, 12-1,300 ft. (n) Epuraea aestiva L., sh. 16. IX. 95, 1,200 ft. 
Thysanoptera. (12) Thrips sp., sh. 13-21. IX. 95, 7-1,000 ft. 
Class AB, § 58. Intermediate Saxifraga Type. 
216 . Saxifraga nivalis, Linn. [Lit. Arct. 36, 37 b.] It seems to be 
abundantly self-fertilized. 
Visitors. Hymenoptera. Petiolata parasitica. (1) 1 sp. 10. VII. 96, 
2,000 ft. 
217 . Saxifraga hypnoides, Linn. [Lit. Brit. 23.] It is fairly well 
visited by allotropous insects. 
Visitors. Lepidoptera. Heterocera: Geometridae : (1) Psodos trepidaria Tr., 
sh. 22. VI. 95, 800 ft. Tortricidae. (2) 1 sp. 22. VI. 96, 2,500 ft. Hymenoptera. 
Petiolata parasitica. Ichneumonidae'. (3, 4, and 5) 3 sp., sh. 17-24. VI. 95; 26. 
VI.-6. VII. 96, 16-2,500 ft. Cynipidae : (6) 1 sp., sh. 22. VI. -4. VII. 95, 
18-27,000 ft. Sessiliventres. Tenthredinidae : (7) Nematus carinatus Htg., sh. 17. 
VI. 99, 2,400 ft. Diptera. Syrphidae : (8) Platychirus manicatus Mg., sh. 22. VI. 
95, 1,800 ft. Empidae : (9) Empis tessellata F., sh. 22. VI. 95, 2,000 ft. (10) E. 
lucida Ztt., 22. VI. 96, 23-2,400 ft. (11) E. aestiva Lw., sh. 30. VI. 96, 2,100 ft. 
(12 and 13) Empis spp., 22. VI. 95, 23-2,500 ft. Cecidomyiidae : (14): Sciara sp. ? 
