694 



INDEX 



Kernan, Jr., John D. The chondrocra- 

 nium of a 20 mm. human embryo 605 



IOCUSTIDAE, and Cryllidae: chromo- 

 _j somes and variation. Chromosome 

 studies. I. Taxonomic relationships 

 shown in chromosomes of Tettigidae 

 and other subfamilies of the Acrididae: 

 V-shaped chromosomes and their signifi- 

 cance in Acrididae 179 



MANDIBIU>.\R artery and the persisting 

 remnant of the mandibular aortic arch 

 in the adult selachian. The so-called. 99 

 M.\RTIN, Berth.v E. Tooth development in 



Dasypus novemcinctus 647 



MooDiE, Roy L. The structure and growth 



of the Plesiosaurian propodial 401 



Myxosporidian parasite of the squeteague, 

 Cynoscion regalis. The structure and 

 development of a 333 



NOTONECTA. A comparative study of 

 the chromosomes of six species of 119 



OPOSSUM Didelphys virginiana L. I. 

 History of the early cleavage. II. For- 

 mation of the blastocyst. Studies in 



the development of the 1 



Ophiura brevispina. II. An embryological 

 contribution and a study of the effect of 

 yolk substance upon development and 

 developmental processes 413 



PARASITE of the squeteague, Cyno.?cion 

 regalis. The structure and develop- 

 ment of a Myxosporidian 333 



Paravortex gemellipara (GrafKlla gemellipara 



Linton). The development of 4.53 



Plesiosaurian propodial. The structure and 



growth of the 401 



Prorhynchus applanatus kennel. Organs of 

 special sense of 163 



ROBERTSON, Wm. Rees B. Chromo- 

 some studies. I. Taxonomic relation- 

 ships shown in chromosomes of Tettig- 

 idae and other subfamilies of the Acridi- 

 dae; %'-shaped chromosomes and their 

 significance in Acrididae, Locustidae, and 

 Cryllidae: chromosomes and variation... 179 



SEA-URCHIN egg. Studies on cell divi- 

 sion and cell differentiation. I. Devel- 

 opment of the cell organs during the 

 fii-st cleavage of the 559 



Selachian. The so-called mandibular artery 

 and the persisting remnant of the man- 

 dibular aortic arch in the adult 99 



Sense of Prorhynchus applanatus kennel. 

 Organs of special 163 



Squeteague, Cynoscion regalis. The struc- 

 ture and development of a Myxosporidian 

 pai'asite of the 333 



Structure and development of a Myxospo- 

 ridian parasite of the squeteague, Cyno- 

 scion regalis. The 333 



Structure and growth of the Plesiosaurian 

 propodial. The 401 



TALIAFERRO, W. H., Kepner, Wm. 

 A. .1ND. Organs of special sense of 

 Prorhynchus applanatus kennel 1C3 



Taxonomic relationships shown in chromo- 

 somes of Tettigidae and other subfamilies 

 of the Acrididae: V-shaped chromosomes 

 and their significance in Acrididae, Lo- 

 custidae, and Cryllidae: chromosomes 

 and variations. Chromosome studies. I. 179 



Tettigidae and other subfamillesof the Acrid- 

 idae: V-shaped chromosomes and their 

 significance in Acrididae, Locustidae, and 

 Cryllidae: chromosomes and variation. 

 Chromosome studies. I. Taxonomic re- 

 lationships shown in chromosomes of . .. . 179 



Tooth development in Dasypus novem- 

 cinctus 647 



Y 



OLK substance upon development and 

 developmental processes. Ophiura 



brevispina. II. An embryological con- 

 tribution and a study of the effect of . . . . 413 



