280 



INDEX 



inner cortical layer, 31 

 median cord, 139, 140 

 mesenteron, 76 

 mesoderm, 50, 208, 210 

 nervous system, 124-126, 130, 139 

 neuroblasts, 126, 132, 139 

 oenocytes, 182 

 optic lobe, 117, 153, 157 

 protodaeum, 116, 117 

 sex cells, 218 

 tritocerebral segment, 109 

 yolk, 241 



yolk cells, 240, 241 

 Ostia, 194 

 Ovaries, development, 214-219, 259 



larva, 99, 213, 214 

 PALM EN, tracheae, 175 

 Paracardial cells, development, 



205 



larva, 196 



Paracardial cellular cord, 195, 196 

 Paracarmine, Meyer's, 252 

 Paracytes, 242 

 Paracytoids, 235, 236, 241 

 PATTEN, mesenteron, 72 

 oenocytes, 182 

 optic lobe, 153, 154, 157 

 segmentation of head, 107 

 yolk cells, 240 

 Pellicle, protoplasmic of yolk, 43, 



84, 254 



Periplaneta, mesenteron, 73, 74 

 mesoderm, 50 

 proventricular valve, 226 

 sex cells, 219 

 PETRUNKEWITSCH, 3 

 amnion, 82 

 blastoderm, 36 

 cleavage, 26 

 fixing fluid, 252 

 genital organs, 216 

 mesenteron, 73 

 mesoderm, 51 



method of securing eggs, 245 

 polar protoplasm, 10 

 rate of development, 248 

 "RZ" cells, 92, 93 



yolk cells, 231 

 Pharyngeal ganglia, development, 



159, 160, 257 

 larva, 122, 124 

 Pharynx, 220 

 Phyllodromia, mesenteron, 73, 74, 



77 



mesoderm. 50 

 Picro-formol, 251 

 Picro-sulphuric, acid. 251 

 Pieris, mesenteron, 72 



mesoderm, 50 



yolk cells, 240 

 Platygaster, amnion, 87 



cleavage, 25 



mesenteron, 73 

 Polar protoplasm, 10 

 Polarity of egg, 4 

 Polistes, amnion, 87 



blastoderm, 34, 35 



cleavage, 25, 26 



cortical layer, 14, 15 



polarity of egg, 4 

 Pontia, mesenteron, 72 

 PRATT, mesenteron, 74 

 Premandibular appendages, 101, 



109, 1 10 



Premandibular segment, 109, no 

 Primary head division, 106 

 Primary yolk cells, 230, 240, 254, 



260 

 Primative swellings, 127, 129, 130, 



138, 255 

 Procephalic lobes, 100, 142, 143, 



255 



Procephalic organ, 94 

 Proctodaeum (proctodael invag- 

 ination), 67, 102, 103, 104, 224, 

 225, 228, 229, 260 

 Protocerebral segment, 107, 108 

 Protocerebrum (protocerebral 



lobes), 115, 116 



development, 100, 102, 142, 143, 

 144, 145, 147, 148, 149-155, 157, 

 164, 165, 166, 180, 255 

 larva, 117-119 



Orthoptera and Dermaptera, 116 

 Protoplasm, of egg, 9, 10-13, 239, 



240, 254 

 Protoplasmic pellicle of yolk, 43, 



84, 254 



Proventricular valve, 220, 226, 260 

 Pulex, mesenteron, 73 

 Pyrrhocoris, mesenteron, 73 



mesoderm, 50 

 RABITO, mesenteron, 74 

 Rate of development, 245-250, 261 

 Recurrent nerve, 122 

 Respiratory system, 99 

 Rhagonycha, Blochmann's corpus- 

 cles, 14 



chemical tests of eggs, 15 

 Rhodites, amnion, 87 

 cleavage, 25 

 mesenteron, 72 

 RILEY, appendages on tritocerebral 



segment, 109 

 tentorium, 179 



