LIST OF ABBREVIATIONS 



In making up this list, the abbreviations used by Snodgrass 

 (1910) were retained to indicate the corresponding part or its 

 rudiment in the embryo. In every case the symbols were designed 

 to suggest the name of the part, in order to avoid frequent refer- 

 ence to the subjoined list. 



Am, amnion. 



lam, cephalic fold of amnion. 



2am, caudal fold of amnion. 



Ant, antenna. 



AMR, anterior mesenteron rudiment. 



AntL, antennal lobe (of brain). 



AntMeso, mesoderm of antennal somite. 



AntNv, antennal nerve. 



AntR, antennal rudiment. 



Ao, aorta. 



ATraL, anterior tracheal loop. 



Bl, blastoderm. 



BIC, blood corpuscles. 



iBr, protocerebrum. 



iBr u iBr-., iBr 3 , the three lobes of the protocerebrum. 



2Br, deutocerebrum. 



SBr, tritocerebrum. 



CB, cephalo-dorsal body. 

 Cbl, cardioblasts. 



CC, cleavage cells. 

 Com, commissure. 



Con, connective (of ventral nerve cord). 



Cor All, corpora (ganglia) allata. 



CL, cortical protoplasmic layer. 



Ctl, cuticle. 



DM, dermatoblasts. 



DDph, dorsal diaphragm. 



DcgCl, degenerating cells. 



DLMcl, dorsal longitudinal muscles. 



DphCl, cells of dorsal diaphragm. 



Ds, dorsal strip (of blastoderm). 



Ect, ectoderm. 



FInt, fore intestine (oesophagus). 



FtCom, frontal commissure. 



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