INDEX. 
Pupa of insects, 308 
‘of the barnacle, 296 
Purpura lapillus, 248 
Pycnogonide, 339 
Pycnopodia, 115 
Pygidium, 304 
Pyrosoma gigas, 392 
Pythonomorpha, 500, 517 
QuoHo.g, 229 
Raccoon, 615 
Radiolaria, 26, 27 
Rail, 544 
Raja eglanteria, 422 
erinacea, 421 
fluviatilis, 424 
levis, 421 
Rana, 487 - 
halecina, 470 
Rangifer caribou, 609 
tarandus, 609 
Raptores, 548 
Rasores, 546 
Rat, black, 586 
blind, 586 
Ratite, 538, 557 
Rattlesnake, 499 
Ray, 421 
sting, 424 
Reasoning power of animals, 
680 
Redia of trematodes, 108, 109 
Reefs, coral, formation of, 87 
Reindeer, 609 
Renilla reniformis, 86 
Reproduction, 18, 6438 
Reproduction of lost parts in 
Hydrozoa, 53 
Planarians, 102 
Batrachia, 481 
Reptilia, characters of, 488, 517 
development of, 495 
skeleton of, 489 
G17 
Reptilia, sexual differences of, 
494 
teeth of, 491, 499 
viviparous, 495, 497 
Resemblance, protective, 487, 675 
Respiration, organs of, 637 
Rhabdoceela, 103 
Rhabdopleura mirabilis, 145 
Rhamphorynchus, 517 
Rhea Americana, 539 
Rhinichthys atronasus, 453 
Rhizocrinus lofotensis, 184 
Rhizopoda, 22, 27 
Rhombogene, 99 
Rhopalodina, 214 
Rhynchocephalia, 511, 517 
Rhyncodesmus sylvaticus, 103 
Rhytina Stelleri, 596 
Robin, 556 
Rodentia, 582, 629 
Root barnacle, 2 
Rotalia, 25 
Rotatoria, development of, 136 
structure of, 184, 138 
Rotifera, 134 
Rotifer vulgaris, 184 
Rugose corals, 84 
Ruminantia, 605 
Saccataé, 95 
Sacculina, 276 
Sagitta, 132 
Salamander, 479 
Salenoglyph snakes, 499 
Salmo fontinalis, 452 
quinnat, 451 
salar, 452 
Salmon, 451 
Salpa, development of, 401, 404 
structure of, 391, 398 
spinosa, 401 
Sarcorhamphus gryphus, 548 
Sauropterygia, 513, 517 
Sauropsida, 518 
