Insects in Great Britain . 
547 
Class H § 20. 1 Labiate ’ Type. 
iio. Euphrasia officinalis, Linn. [Lit, Brit. 23; N.C.E. 
1, 3 c, 4, 14, 18, 21 b, 30, 40 ; Wettstein 2539 ; Arct. 36, 37 c, 
38 ; Alps 2, 9, 21 b, 34 ; Wettstein 2539 ; Pyren. 17.] The 
flower varies considerably in size, but the mechanism does not 
change. In the glen the tube is usually 2*5 mm. long. 
Visitors. Hymen optera. Aculeata : Apidae : (1) Apis mellifica 
L., sh. 15. IX. 95, 800 ft. once. Diptera. Syrphidae : (2) Platychirus 
manicatus Mg., fp. 14. IX. 95, 800 ft. 
in. Nepeta Glechoma, Benth. [Lit. Brit. 23, 29, 34 ; 
Bennett 212 ; Marquand 1513 ; N.C.E. 1, 3 c, 4, 16, 18, 21 a, 
21b, 33, 34, 40; De Vries 2460; Alps 34; N.Am. 19 c.] 
Gynodioecious ; the tube of the flower is 4 mm. long. 
Visitors. Hymenoptera. Aculeata: Apidae : (1) Apis mellifica L., 
sh. 20. V. 97, 800 ft. Diptera. Anthomyiidae : (2) Anthomyia sp., 
fp. 20. V. 97, 800 ft. 
1x2. Prunella vulgaris, Linn. [Lit. Brit. 23, 39 ; Ogle, 
1904 ; N.C.E. 1, 3 c, 4, 11, 14, 14 a, 16, 18, 21 a, 21 b, 30, 32, 
34 ; De Vries 2460 ; MacLeod 1473 ; Arct. 34 ; Alps 2, 16, 
21 b, 34 ; Pyren. 17 ; N.Am. 19 c.] The tube of the decidedly 
proterandrous flower is usually 9-10 mm. long. We found, 
however, a larger-flowered form an the crags at 2,000- 
2,800 feet. 
Visitors. Hymenoptera. Aculeata : Apidae : (1) Bombus hortorum 
L., sh. 11. VII. 96, 800 ft. 
113. Stachys palustris, Linn. [Lit. Brit. 23; N.C.E . 1, 
3 c, 4, 8, 11, 18, 21 b, 32, 33 ; Alps 16 ; Pyren. 17.] 
Visitors. Hymenoptera. Aculeata: Apidae'. ( 1 ) Bombus agrorum 
F., sh. 2. VII. 95. Diptera. Syrphidae'. (2) Rhingia campestris Mg., 
sh. and fp. 2-6. VII. 95. All at 800 ft. 
114. Galeopsis Tetrahit, Linn. [Lit. Brit. 23, 39 ; N.C.E. 
1, 3 c, 4, 18, 21 b, 33, 40 ; Alps 2, 9, 34 ; Briquet 293 ; Pyren. 
17.] The form with rose flowers is very rare. 
Visitors. Lepidoptera. Rhopalocera: (1) Lycaena icarus Rott., 
P p 
