Hymenoptera. 228 



I 57917 Friese, H. 57.9» 



1911. Hymenoptera, Apidae I. Megachilinae. Das Tierreich Lief. 28, 440 

 pp., XXVI, 132 figg. 



18 Ton Iheriug, Hermaun. 57.99 



1911. Phylogenie der Honigbienen. Zool. Ajiz. Bd. 38 p. 129—136, 

 1 fig. 



19 Yogt, Oskar. 57.99: 11.5 



1911. Studien iiber das Artproblem. 2. Mitteilung. Ueber das Variieren 

 der Hummeln. 2. Teil. Sitz.-Ber. Ges. uat. Freuude Berlin 1911 p. 31 

 — 74. [4 nn. app. 19 nn. varr. 14 nn. abb. 3 rass. 28 nn. form, in Bom- 

 bus. 1 n. form, in PsitJiyrus. Pratobotnbus, Ag7-obombus, Terrestribombus, 

 Hortobombus, Cullumanobonibus, Lapidariobombus, Sibiricobombus, Subterraneo- 

 hombus nn. subgg.] (41.12,.2, 42, 43.18,.91, 46.8, 47.2,.4,.8,.9, 48.1,.6, 



491, 492, 494, 51.7, 56.1, 57.1— .9) 



20 Emery, Carlo. 67.99 : 13.6 



1910. Considerazioni intorno alia regola del Dzierzon sulla determina- 

 zione del sesso nelle Api e in altri Imenotteri. Rend. Accad. Sc. Bo- 

 logna N. S. Vol. 14 p. 30—39. [Uova determinate pergamicamente in 

 sense maschile, spermii in senso femminile. Carattere femminile predo- 

 mina nella fecondazione.] 



21 Allard, H. A. 57.99 : 15 



1911. Some Experimental Observations concerning the Behavior of Va- 

 rious Bees in their Visits to Cotton Blossoms. Amer. Natural. Vol. 45 

 p. 607—622, 668—685. [Relative importance of vision and smell. Habit 

 formation.] 15.1 



22 Alfken, J. D. 57.99 (403) 



1911, Apidologische Studien. Deutsch. entom. Zeitschr. 1911 p. 457 — 

 466. [2 nn. st. in Andrena.'] 

 (42, 43.11,.13-.15,.18,.2l,.34,.52,.53,.58,.61,.64,.65,.68,.69,.92, 47.1,.9, 48.5, 



494, 57.6) 

 57923 Friese, H. 57.99 (403) 



1911. Neue Bienen-Arten der palaearktischen Region. Arch. Nat. Jahrg. 

 76 Bd. 1 Heft 2 p. 135-143, 8 figg. [10 nn. spp. in: Nomia, Eucera, 

 Osmia, Megachile 2, Anthidium, Dioxys, Phiarus (2 nn. varr.), Ammobates 2. 

 Cubitalia, Caesarea nn. subgg.] 



24 Frey-Gessner, E. 57.99 (494) 



1911. Hymenopteres duValais. Bull. Mnrith. Soc. yalais. Sc. nat. Fasc. 

 36 p. 179-225. 



25 Cockerell, T. D. A. 57.99 (5) 



1911. Bees in the Collection of the U. S. National Museum, 1. Proc. 

 U. S. nation. Mns. Vol. 39 p. 635—658. [9 nn. spp. in: Sphecodes, Osmia 

 2, Bombus, Habropoda, Noniada 4 (5 nn. subspp. 2 nn. varr.) 1 n. var. in 

 Ceratina.] — 2. Vol. 40 p. 241 — 264. [17 nn, spp, in : Halictus, Andrena 2, 

 Coelioxys, Stelis, Proanthidium, Megachile 3, Dasypoda, Tetralonia, Anthopho- 

 ra 6 (1 n. subbp.). 1 n. var. in Anthidium. Liothyrapis n. subg.] 



(43.46, 494, 51.1,.2, 52.1,.4, 54.6, 57.6, 59.3, 76.3,.4,.6, 78.6,.8, 91.3) 

 57926 Cockerell, T. D. A. 57.99 (5) 



1911. Descriptions and Records of Bees. XXXIV. Ann, Mag. nat. Hist. 

 (8) Vol. 7 p. 225 — 237. [11 nn. spp. in : Lithanthidium n. g., Dasypoda, 

 Systropha, Melecta, Sphecodes, Andrena, Nomada, Prosopis, Epeolus, Nomioides 

 2.] — XXXV. p. 310-319. [8 nn, spp, in: Crocisa 3, Megachile 5. 1 n, 

 subsp. in Xylocopa. Androgynella n, g. pro Megachile detersa. Megachile stu- 

 diosella n. nom. pro M. studiosa Bingham non Cresson, Apis nursei pro A. 

 te^tacea Bingham non Smith.] — XXXVI. p. 485 — 493. [11 nn. spp. in : 

 Megachile 7, Anthophora 4.] — XXXVII. Vol. 8 p. 179—192, [16 nn. spp. 

 in : Dianthidium, Proanthidium, Anthidium, Allodape, Tetralonia, Tetraloniella, 

 Cerattna 2 (1 n. var.), Halictus 8. Anthidium friesei n. nom. pro A. flavo- 

 maculatum Friese non Camerok, Nomia pereziana pro N. gracilipes Perez 

 non SmxH/ Halictus cameronellus pro H. himalayanus Cameron non Binghak, 

 H. strandiellus pro H. ceylonicus Strand non Cameron.] — XXXVIH. p, 283 



1. XI. 1911. 



