LEGRAND, Miss C. — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol, placen- 



taire, Hop. Saint- Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e, France 

 a Le trophoblaste endovasculaire. (Rodentia) 

 LEHMAN, H. E. Ph.D. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, 



N.C., U.S.A. • 



LEHMANN, F. E. Dr.phil., Prof. (Emer.) — Zool. Inst., Univ. Bern, Sahlistr. 8, 3000 



BERN, Switzerland • 



LEHMANN, R. Dr.rer.nat. — Zool. Inst, der Univ. Freiburg, Katharinenstr. 20, 78 FREI- 

 BURG i.Br.. W.Germany 

 LEIBENGOTH, F. Dr.rer.nat. — Zool. Inst, der Univ., Holderlinstr. 12, 74 TUBINGEN. 



W.Germany 

 LEIKOLA, A. H. A. Ph.D. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, 



Arkadiankatu 7, HELSINKI 10, Finland 

 a Primary induction. Gallus domesticus (Aves) 

 LEIST, K.-H. Dipl.Biol. — Zool. Inst, der Univ., Siesmayerstr. 70, 6000 FRANKFURT a.M., 



W.Germany 

 a Effects of ACTH and adrenocortical hormones. Amby stoma spec, Salamandra salamandra 



(Urodela), Xenopus laevis (Anura) 

 b Development of endocrine tissue. Amby stoma spec, Salamandra salamandra (Urodela), 



Xenopus laevis (Anura) 

 c Biochemical changes during development induced by ACTH and steroid hormones. Xeno- 

 pus laevis (Anura) 

 LE'JOHN, H. E. B. Ph.D. — Fourah Bay Coll., Univ. Coll. of Sierra Leone, FREETOWN, 



Sierra Leone, W.Africa 

 LEMEZ, L. MUDr. — Dept. of Anat.. Charles Univ., U nemocnice 3, PRAHA 2, Czecho- 

 slovakia 

 a Embryonal haematology. Gallus domesticus (Aves) 

 h Experimental topogenesis and morphology of the pneumogastric system. Gallus domesticus 



(Aves) 

 LE MOIGNE, A. — Lab. de Biol. Anim., Univ. de Paris, Fac des Sci. d'Orsay, 91 ORSAY, 



France 

 a Developpement embryonnaire (etude au microscope electronique) . (Planaciidae, Turbel- 



laria) 

 LEMUS, D. Dr. Vet. — Cat. de Embriol., Escuela de Med., Univ. de Chile, Zaiiartu 1042, 



SANTIAGO, Chile 

 LENDER, Th. Prof. — Lab. de Biol. Anim., Univ. de Paris, Fac. des Sci. d'Orsay. 91 



ORSAY. France • 



a Problemes de la regeneration: substances inductrices et inhibitrices. (Planaciidae, Tur- 



bellaria) 

 h Etude au microscope electronique de la regeneration (en particulier des neoblastes). 



Dugesia gonocephala (Turbellacia) 

 c Neurosecretion. (Planaciidae, Turbellacia) 

 d Regeneration. Astecina gibbosa (Astecoidea, Echinodecmata) 

 e Culture in vitro d'organes larvaires. Gallecia spec. (Lepidopteca), Peciplaneta spec. 



(Octhopfeca) 

 f Culture in vitro de gonades femelles. Tenebrio molitoc (Coleopteca) 

 LENDON. R. G. B.Sc. — Dept. of Pathol., Children's Hospt., Western Bank, SHEFFIELD 



SIO 2TH, England 

 a Spina bifida: 1. experimental production by means of trypan blue. 2. embryogenesis of the 



defects produced. 3. attempts to produce some of the defects by means of hypoxia. Rattus 



nocvegicus (Rodentia) 

 LENICQUE, P. M. Dr.es. Sci. — Lab. de Biol, des Invert. Marins. Museum Natl. d'Hist. 



Nat.. 57 rue Cuvier. PARIS "Ve, France 

 a Role des neurohormones aux cours de la regeneration; etude histochimique et etude phar- 



macologique de I'effet des neuropharmaca. Hydca littocalis, Clava squamata (Hydcoidea), 



Dugesia tigcina (Tucbellacia) 

 LENSKY. Y. Ph.D. — Dept. of Entomol., Fac. of Agric, Hebrew Univ. of Jerusalem, 



P.O.B. 12, REHOVOTH, Israel 

 a Changes occurring in proteins of haemolymph during metamorphosis. Apis mellifica var. 



ligustica (Hymenopteca) 

 h Separation, characterization and identification of proteins of haemolymph. in three castes 



and in two races. Apis mellifica var. ligustica (Hymenopteca) 

 c Distribution of blood antigens in fluid compartments and tissues of developing and adult 



animals, using immuno-chemical and biochemical analysis. Apis mellifica var. ligustica 



(Hymenopteca) 

 d Distribution of blood antigens in fluid compartments and tissues in diapausing pupae and 



developing adults. Hyalophoca ceccopia (Lepidopteca) 

 e The ultrastructure of drone spermatozoa and their position in male and female storage 



organs. Apis mellifica var. ligustica (Hymenopteca) 



104 



