1.1. 113 1. 2a. 



I. Descriptive embryology. 



la. Theoretical problems. 



lb. Technics. 



lc. General questions (induction, determination, regulation, orga- 

 nization, symmetry and asymmetry, gradients, etc.). 



HV. The shape of cells in certain early embryonic tissues. 

 Chick, rabbit and man. F. Th. LEWIS 



(Cf. Proc. Amer. Acad. Arts and Sci., 1949, 77, 147—186) 



2a. Complete development, or development during special periods 

 (e.g. early, late, etc.) of whole organism. 



C. Breeding, larval development and ecology of Nereis V. 3. 



diversicolor (Nereidae), Tharyx marioni (Cirratulidae) , 

 Heteromastus filiformis (Capitellidae), (Polychaetes) . 



R. P. DALES 



C. Breeding habits, embryology and larval life-history V. 3. 



history of Arenicola marina, Clymenella torquata (Poly- 

 chaetes). G. E. NEWELL 



(Completion of previous work published in J. Mar. Biol. Ass. 1948) 

 C. Embryology of Enchytraeidae (Oligochaeta) . 



M. PASCHMA. 

 C. Elektronenoptische Studien iiber Plasmastruktur des 



Eies von Tubifex. Mrs R. BISS 



C. Embryology of Peripatus (Onychophora). 



S. M. MANTON 



D. Embryology of Branchiopods, esp. Crania. S. DIDING. 



D. The developmental stages of ova and larvae of barnacles V. 3. 



with special reference to the naupliar stages and 



settlement. Tetraclita serrata, Octomeris angulosa, 



Chthamalus dentatus, Balanus algicola, B. trigonus, 



B. maxillaris and B. amphitrite (Cirrepedia) . 



Miss E. E. SANDISON 

 D. Embryology of the Cape Crawfish, Jasus lalandii 



(Crustacea). C. von BONDE 



D. Embryologie et developpement post-embryonnaire. V. 3. 



Arachnides et Myriapodes. M. VACHON IV. 2. 



D. Embryological development of Ammophila campestris 



pubescens (Hymenoptera, Insecta) and dependence of 



its velocity of microclimate. G. P. BAERENDS 



D. Embryologische Studien an Ameisen. Formica rufa und Ilia. 2a. 



andere Arten. K. GOSZWALD 



D. Studies on the embryology of Insects. Cochlidion lima- 



codes (Lepidoptera). P. J. HOLST CHRISTENSEN 

 D. Embryonic development of Tropinota hirta. (Coleop- 



tera). W. KLOFT 



