PART III. | THE MECHANISMS OF FLOWERS. 525 
(37) A. punctulata, Schenk, ? g ; (38) A. rose, Pz. 2 ; (39) A. Schrankella, Nyl. 
9; (40) A. Smithella, K., g, very ab., 2, scarcer; (41) A. Trimmerana, K. 
2; (42)'A. varians, Rossi, 9 ; (43) A. ventralis, Imh., ¢, very ab., 2 scarce ; the 
& of all the Andrenx s., the 2 s. and c.p. ; (44) Halictus cylindricus, F. 9; 
(45) H. albipes, F. 9, both s. ; (46) Sphecodes gibbus, L. ?, and its varieties, 
s.; (b) Vespide: (47) Vespa germanica, L. 9, s.; (48) Odynerus parietum, 
L. 9, 8.3 (c) Ichneumonidae: (49) Various sp. ; (d) Pteromalide : (50) Peri- 
lampus sp., freq. ; (¢) Tenthredinide: (51) Dolerus madidus, K1., s. ; (52) D. 
eglanteriz, F., s.; (53) D. gonager, KL, s. ; (54) Nematusrufescens, H.,s. B. 
Diptera—(a) Empide : (55) Rhamphomyia sulcata, Fallen, s. ; (56) Empis 
sp., ab., s.; (b) Bombylide: (57) Bombylius major, L., s.; (c) Syrphide: 
(58) Eristalis tenax, L.; (59) E. arbustorum, L. ; (60) E. intricarius, L. ; (61) 
Fic. 177.—Salix herbacea, L. 
A.—Part of a male plant (nat. size). 
B.—Male catkin, with five flowers. 
C.—Male flower, after removal of the bract, seen from without. 
D.—Male flower, from within. 
E.—Female catkin. with six flowers. 
F.—Single female flower, from within. 
.—Ditto, after removal of the bract, seen obliquely from without, so that the 
large nectary (n) is visible. m’, small nectary. 
(B—G, x 7; Albula, 21, 22, July, 1878). 
Q 
E. pertinax, Scop. ; (62) Brachypalpus valgus, Pz. ; (63) Syrpbus pyrastri, L. ; 
(64) S. ribesii, L. ; (65) S. balteatus, Deg. ; (66) Cheilosia chloris, Mgn. ; (67) 
Ch. brachysoma, Egg. ; (68) Ch. modesta, Egg. ; (69) Ch. pictipennis, Egg. ; 
(70) Ch. preecox, Zett. ; (71) Syritta pipiens, L.; all these Syrphide both s. 
and f.p.: (d) Muscide : (72) Pollenia rudis, F., fp. ; (78) Calliphora erythro- 
cephala, Mgn., s.; (74) Scatophaga stercoraria, L. ; (75) Sc. merdaria, L., 
both ab., s.; (e) Conopide: (76) Sicus ferrugineus, L. ; (77) Myopa buccata, 
L. ; (78) M. testacea, L., all three rather freq., s.; (/) Bibionide: (79) Bibio 
Marci, L. ; (80) B. Johannis, L., both species s. C. Coleoptera—(a) Niti- 
dulide : (81) Meligethes, ab., lh. ; (5) Elateride: (82) Limonius parvulus, 
Pz. D. Lepidoptera—(a) Rhopalocera : (83) Vanessa urtice, L., ab., s. ; (84) 
Lyceena argiolus, L., s. ; (0) Microlepidoptera: (85) Adela sp., ab. E. Hemi- 
ptera—(86) Anthocoris sp.,s. See also No. 590, 11. 
7 
