SUBJECT AND AUTHOR INDEX 



AMBYSTOMA TIGRINUM. Chromo- 

 some number and pairs in the somatic 



mitoses of - . . 169 



Amphibia caudata and its phylogenetic sig- 

 nificance. The morphology of the sound- 

 transmitting apparatus in 325 



Apparatus of Spelerpes bislineatus. The hyo- 



branchial 527 



Asplanchna ebbesbornii (Rotifer). The de- 

 velopment of 389 



/^AUDATUM. Pharynx of Microstoma .. . 309 



Chromosome number and pairs in the somatic 

 mitoses of Ambystoma tigrinum 169 



Clupeoid cranium in its relation to the swim- 

 bladder diverticulum and the membran- 

 ous labyrinth. The 439 



Coccids, with especial reference to the forma- 

 tion of the ovary, origin and differentia- 

 tion of the germ cells, germ layers, rudi- 

 ments of the midgut, and the intracellular 

 symbiotic organism. Embryology of . . . 73 



Coelenterates. VI. General considerations, 

 discussions, conclusions. Germ cells of. . 1 



Cranium in its relation to the swimbladder 

 diverticulum and the membranous labv- 

 rinth. The clupeoid '. . 439 



DEVELOPMENT of Asplanchna ebbes- 

 bornii (Rotifer). The 389 



Development of Gelasimus after hatching. 

 The 485 



HuBBS, C.\RL L. A comparative study of the 

 bones forming the opercular series of fishes 61 



Htm.\n, O. W. The development of Gelasi- 

 mus after hatching 485 



Hvobranchial apparatus of Spelerpes bislinea- 

 tus. The 527 



KEPNER, Wm. a., and Helvestine, 

 Fr.\nk, Jr. Pharynx of Microstoma 

 caudatum 309 



LABYRINTH. The clupeoid cranium in 

 its relation to the swimbladder divertic- 

 ulum and the membranous 439 



Layers, rudiments of the midgut, and the in- 

 tracellular symbiotic organism. Embry- 

 ology of coccids, with especial reference to 

 the formation of the ovary, origin and dif- 

 ferentiation of the germ cells, germ 73 



MEMBRANOUS labyrinth. The clupe- 

 oid cranium in its relation to the swim- 

 bladder diverticulum and the 439 



Microstoma caudatum. Pharynx of 309 



Midgut, and the intracellular symbiotic organ- 

 ism Embryology of coccids, with espe- 

 cial reference to the formation of the ovary, 

 origin and differentiation of the germ cells, 



germ layers, rudiments of the 73 



Mitoses of Ambystoma tigrinum. Chromo- 

 some number and pairs in the somatic . . . 169 

 Mouth-parts of Orthoptera and Euplexoptera. 

 The anatomy of the head and 251 



EMBRYOLOGY of coccids. with especial 

 reference to the formation of the ovary, 

 origin and differentiation of the germ 

 cells, germ layers, rudiments of the mid- 

 gut . and the intracellular symbiotic organ- 

 ism 73 



Euplexoptera. The anatomy of the head and 

 mouth-parts of Orthoptera and 251 



FISHES. A comparative study of the 

 bones forming the opercular series of . . 61 



GELASIMUS after hatching. The devel- 

 opment of 485 



Germ cells, germ layers, rudiments of the mid- 

 gut, and the intracellular symbiotic organ- 

 ism. Embryology of the coccids, with 

 especial reference to the formation of the 

 ovary, origin and differentiation of the . . 73 



Gerrn cells of coelenterates. VI. General con- 

 siderations, discussion, conclusions I 



Germ layers, rudiments of the midgut, and the 

 intracellular symbiotic organism. Em- 

 bryology of coccids, with especial reference 

 to the formation of the ovary, origin and 

 differentiation of the germ cells 73 



HARGITT, George T. Germ cells of 

 coelenterates. VI. General considera- 

 tions, discussion, conclusions 1 



Head and mouth-parts of Orthoptera and 



Euplexoptera. The anatomy of the 251 



Helvestine, Fr.\n-k. Jr., Kepner, Wm. A , 

 .^.ND. Pharynx of Microstoma caudatum 309 



OPERCULAR series of fishes. A compara- 

 tive study of the bones forming the. ... 61 

 Orthoptera and Euplexoptera. The anatomy 



of the head and mouth-parts of 251 



Ovary, origin and differentiation of the germ 

 cells, germ layers, rudiments of the mid- 

 gut, and the intracellular symbiotic organ- 

 ism. Embryology of coccids, with espe- 

 cial reference to the formation of the 73 



PAIRS in the somatic mitoses of Amby- 

 stoma tigrinum. Chromosome number 



and 169 



Parmenter,Ch.\rlesL. Chromosoriie num- 

 ber and pairs in the somatic mitoses of 



Ambystoma tigrinum 169 



Pharynx of Microstoma caudatum 309 



Phylogenetic significance. The morphology 

 of the sound-transmitting apparatus in 

 Amphibia caudata and its 325 



REED, H. D. The morphology of the 

 sound-transmitting apparatus in Am- 

 phibia caudata and its phylogenetic sig- 

 nificance 325 



(Rotifer). The development of Asplanchna 

 ebbesbornii 389 



SHINJI, George Orihay. Embryology of 

 coccids, with especial reference to the for- 

 mation of the ovary, origin and differenti- 

 ation of the germ cells, germ layers, rudi- 

 ments of the midgut, and the intracellular 

 symbiotic organism 73 



585 



