SUBJECT AND AUTHOR INDEX 



ACIUDIDAE: V-shaped chromosomes 

 and their significance in Aciididae, Lo- 

 custidae, and Cryllidae: chromosomes 

 and variation. Chromosome studies. I. 

 Taxonomic relationships shown in chro- 

 mosomes of Tettigidae and other sub- 

 families of the 179 



."Xllis, Jr., Edward Phelps. The so-called 

 mandibular artery and the persisting rem- 

 nant of the mandibular aortic arch in the 

 adult selachian 99 



Artery and the persisting remnant of the 

 mandibular aortic arch in the adult sela- 

 chian. The so-calleii maiidiliular 99 



Aortic arch in the adult r^elachiaii. The so- 

 called mandibular artery and the persist- 

 ing remnant of the mandibular 99 



BALL, Stanley C. The development of 

 Paravortex gemellipara (Graffilla gem- 



ellipara Linton) 453 



Blastocyst. Studies in the development of 

 the opossum Didelphys virginiana L. L 

 History of the early cleavage. IL For- 

 mation of the 1 



Browne, Ethel Nichol.son. A compara- 

 tive study of the chromosomes of six spe- 

 cies of Notonecta 119 



CELL division and cell differentiation. I. 

 Development of the cell organs during 

 the first cleavage of the sea-urchin egg. 

 Studies on 559 



Cells of coelenterates. IL Clava leptostvla. 



Germ "... 85 



Chondrocranium of a 20 mm. human em- 

 bryo. The 605 



Chromosome studies. L Taxonomic rela- 

 tionships shown in chromo.somesof Tettig- 

 idae and other subfamilies of the Acrid- 

 idae: V-shaped chromosomes and their 

 significance in Acrididae, Locustidae, and 

 Cryllidae: chromosomes and variation. . . 179 



Chromosomes of six species of Notonecta. A 

 comparative study of the 119 



Clava leptostyla. Germ cells of coelenter- 

 ates. II 85 



Cleavage. II. Formation of the blastocyst. 

 Studies in the development of the opos- 

 sum Didelphys virginiana L. I. History 

 of the early 1 



Cleavage of the sea-urchin egg. Studies on 

 cell division and cell differentiation. I. 

 Development of the cell organs during 

 the first 559 



Coelenterates. II. Clava leptostyla. Germ 

 cells of 85 



Cryllidae: chromo.somes and variation. 

 Chromosome studies. I Taxonomic re- 

 lationships shown in chromosomes of 

 Tettigidae and other subfamilies of the 

 Acrididae: V-shaped chromosomes and 

 their significance in Acrididae, Locus- 

 tidae, and 179 



C.ynoscion regalis. The structure and devel- 

 opment of a Myxosporidian parasite of 

 the squeteague 333 



DANCHAKOFF, Vera. Studies on cell 

 division and cell differentiation. I. 

 Development of the cell organs during 

 the first cleavage of the sea-urchin egg. . 559 



Dasypus novemcinctus. Tooth development 

 in 647 



Davis, H. S. The structure and develop- 

 ment of a Myxosporidian parasite of the 

 squeteague, Cynoscion regalis 333 



Development and developmental processes. 

 Ophiura brevispina. II. An embryo- 

 logical contribution and a study of the 

 effect of yolk substance upon 413 



Development of a Myxosporidian parasite oif 

 the squeteague, Cynoscion regalis. The 

 structure and 333 



Development in Dasypus novemcinctus. 

 Tooth g47 



Development of Paravortex gemellipara 

 (Graffilla gemellipara Linton) 4,53 



Development of the cell organs during the 

 first cleavage of the sea-urchin egg. 

 Studies on cell division and cell differen- 

 tiation. 1 559 



Development of the opossum Didelphys vir- 

 giniana L. I. History of the early" cleav- 

 age. II. Formation of the blastocyst. 

 Studies in the 1 



Differentiation. I. Development oif the cell 

 organs during the first cleavage of the sea- 

 urchin egg. Studies on cell division and 



^. cell 5,59 



Division and cell differentiation. I. Devel- 

 opment of the cell organs during the first 

 cleavage of the sea-urchin egg. Studies 

 on cell " 559 



EGG. Studies on cell division and cell 

 differentiation. I. Development of the 

 cell organs during the first cleavage of 



the sea-urchin 559 



Embryo. The chondrocranium of a 20 mm. 



human 605 



Embryological contribution and a study of 

 the effect of yolk substance upon devel- 

 opment and developmental processes. 

 Ophiura brevispina. II. An 413 



TT^ISHES. Form and growth in 379 



Form and growth in fishes 379 



GERM cells of coelenterates. II. Clava 

 leptostyla 85 



Grave, C.\swell. Ophiura brevispina. II. 

 An embryological contribution and a 

 study of the effect of yolk substance upon 

 development and developmental proc- 

 esses 412 



Growth in fishes. Form and 379 



Growth of the Plesiosaurian propodial. The 

 .structure and 401 



HARGITT, George T. Germ cells of 

 coelenterates. II. Clava leptostyla . 85 

 Hartman, Cart. Gottfried. Studies in the 

 development of the opossum Didelphys 

 virginiana L. I. History of the early 

 cleavage. II. Formation of the blasto- 

 cyst 1 



Hecht, Selig. Form and growth in fishes. . 379 



KEPNER, \Vm. a. and Taliaferro, W. 

 H. Organs of special sen.se of Prorhyn- 

 chus applanatus kennel 163 



693 



