770 



INDEX. 



Pupa sheath, 330 

 stage, 3 

 .S',v N)inph 

 Pupipara-, 29, 30 



development of alimentary canal 



in, 423 



of nervous system in, 482 

 of trachea: in, 354 

 number of ventral ganglia in, 65 

 Pygidium, 629 



functions of, 629 

 Pyramidal ganglion, 466, 748 



development of, 494 

 Pyrrhocoris, dorsal organ of, 255 



Rabl-Ruckhard on corpora fungi- 



formia, 446 

 Ranvier, nodes of, 289 

 Raphd, 3 

 Reaumur on act of suction, 399 



on ecdysis, 21 



on proboscis, 400 



on respiration, 376 

 Receptaculum seminis, 677 

 Rectal glands, 54 

 Rectal papilla?, 417 



function of, 420 



morphology of, 420 



nerves of, 420 



pulsations of, 421 



secretion of, 421 



trachea: of, 419 

 Rectal valve, 428 

 Rectum of imago, 412 



of larva, 58 

 Recurrent nerves, 63 

 Rees, Van, on changes in crop of 

 nymph, 314 



on development of dorsal 

 muscles, 336 



on development of salivary 

 glands, 431 



on metamorphosis, 300 



on morphology of imaginal 

 discs, 304 



on origin of imaginal discs, 261 



on pro-nymph, 300 

 Reflex acts in Crustacea, 475 

 Refractive cylinders, 559 

 Refractive index of compound cornea, 



559 

 Regmagene Insecten, 256 



Regnault and Reiset on respiration, 



373 



Rejewsky on generative organs, 663 

 Remigium, 199, 201 

 Respiration, act of, 224, 373 



abdomen, movements of, in, 376 



absorption of oxygen in, 380 



activity of, 373 



excretion of CO, in, 381 



muscles of, 222, 377 



organs of, in imago, 224 

 in larva, 47 



physiology of, 373 

 Respiratory quotient, 374 

 Rete mirabile, 216, 396 

 Retina, 533 



continuous, 541 



development of, in pronymph, 

 326 



in nymph, 552 



distal of Parker, 531 



historical and critical observa- 

 tions on, 541 



of compound eye, 517 



of Neuroptera, 541 



of Noctuids, 541 



of simple eye, 510, 523 



origin of, from cerebron, 4^4 



segregate, 541 



trachea- of, 538 

 Retinal disc, 326 



in larva, 70, Si 

 Retinal end organs, 506 



absent in nymph, 549 



development of, 553 



non-inversion of, 553 

 Retinula:, 520, 533 

 Retractor muscle of frontal sac, 217 

 Rhabdoccelia, generative organs of, 



721 

 Rhabdome, 517 



in immature Diptera, 550 



morphology of, 550 



origin from mesoblast, 549 



Sec Great rods 

 Ring in larva, 77 

 Rings of pseudo-trachea 1 , 393 

 Roberts' macula, 272 

 Robin on polar bodies, 714 

 Robineau-Desyoidy on halter, 616 



on Myodaires, 107, 119 



on proboscis, 130 



Kods and cones, i'tv Uacilli of retina 

 Rostdlum, 139 

 Rostrum, 134, 136, 148, 154 



muscles of, 392 



