720 
Hymenoptera. Studies on germ cells. IV. 
Protoplasmic differentiation in the oocytes 
Of (CeTtalM.2 aoe cceeninetcia aera lelels ware eres 495 
Hyomandibula of the gnathostome fishes. 
The vhomologiesjotahersee eee eee aoe 
Hypophysis in Squalus acanthias. The de- 
velopmentiolthenpcee arts scnecaeencn eee 
NCISOR teeth of the albino rat. The 
structure and growth of the............. 
Inequalities and deficiencies in homologous 
chromosomes: their bearing upon synapsis 
and the loss of unit characters. Chromo- 
some: studies.) (UM teae cc nea ce cee cease 
je E. E. The morphology of normal 
fertilization in Platynereis megalops... . 
ELLOGG, James L. Ciliary mechan- 
isms of lamellibranchs with descriptions 
OL*ANA LOWY paca oi ciovs nase Wrolsl sadist ree: 
Kepner, Wm. A. and Casu, J. R. Ciliated 
Pits of StenvOstomMane.-e-e.-- ose ener 
| pecs eerie with descriptions of 
anatomy. Ciliary mechanisms of..... 
ECHANISMS of lamellibranchs with 
descriptions of anatomy. Ciliary.... 
Morphology of normal fertilization in Platy- 
nereispmeralops. Whe s)-c...2..+. 52-1 : 
OCYTES of certain Hymenoptera. 
Studies on germ cells. IV. Protoplas- 
mie differentiation in the.............-. 
Oogenesis in Philosamia cynthia............. 
Ova: end of the first to the end of the ninth 
day. The development of the albino 
rat, Mus norvegicus albinus. II. Ab- 
naLO) BABY Us ECG CO Defoe otha arhceraerherein rere 
HILOSAMIA eynthia. Oogenesis in.... 
Phyllopod crustacean Thamnocephalus 
platyurus Packard. The morphology of 
the frontal appendage of the male in the.. 70: 
INDEX 
Pitsiofistenostoma. (‘Ciliated!:s...2..)-.ceeer 
Platynereis megalops. The morphology of 
MOUMA LertilazatlOM iM. sain ose eeeene 
AT, Mus norvegicus albinus. I. From 
the pronuclear stage to the stage of 
mesoderm anlage; end of the first to the 
end of the ninth day. The develop- 
mien ofthe ‘albino. «2.7m ee eee 
Rat, Mus norvegicus albinus. IJ. Abnor- 
mal ova: the end of the first to the end of 
the ninth day. The development of the 
AI DINO oss sscye, dts Ne ee CI EE eee 
Rat. The structure and growth of the incisor 
teeth of the albino; 95. eeseneee teas 
Rogpertson, W. ReEES BREMNER. Chromo- 
some studies. III. Inequalities and de- 
ficiencies in homologous chromosomes: 
their bearing upon synapsis and the loss 
obnmnit characters=-nce see eee 
QUALUS acanthias. The development 
of the hy pophysis imesse sees eee ete ene 
Star-gazer, Astroscopus guttatus. A peculiar 
structure in the electreplax of the........ 
Stenostoma. Ciliated pits of...............- 
Synapsis and the loss of unit characters. 
Ctromosome studies. III. Inequalities 
and deficiencies in homologous chromo- 
somes: their bearing upon............... 
ANNREUTHER, Georce W. The em- 
bryology of Bdellodrilus philadelphicus. 
Teeth of the albino rat. The structure and 
PTroOwthiot the wncisoresc: ee. eee eee 
Thamnocephalus platyurus Packard. The 
morphology of the frontal appendage of 
the male in the Phyllopod crustacean. ... 
NIT characters. Chromosome studies. 
III. Inequalities and deficiencies in 
homologous chromosomes: their bear- 
ing upon synapsis and the loss of........ 
