694 



INDEX. 



RaJula, 355, 373 



Raia, 571, 572 



I'iaiidiE, 572 



Rail, 615 



Rainey's corpuscles, 218 



Rallus, 615 



Rana, 588 



Raiiatra, 489 



Rangifer, 642 



Ranvier, nodes of, 96 



Raptores. 616 



Raptorial foot, 614 



Rasorial foot, 614 



Rasor clam, 368 



Rathke, 18 



Ratitas, 612 



Rats, 639 



Rat-tail larva, 493 



Rattlesnake, 601 



Ray, 10, 20 



Reamur, 13 



Receptaculum seminis, 120, 471 



Rectrices, 604 



Rectum, 461 



Red coral, 256 



Rcdia, 276 



Reduviidfe, 489 



Regulares, 345 



Reindeer, 642 



Remak, 18 



Remiges, 604 



Remora, 577 



Renilla, 258, 259 



Reproduction, asexual, 140, 143 



Reproduction, sexual, 142 



Reptilia, 588 



Respiratory (jrgaiis, 107 



Respiratory organs of vertebrates. 



547 

 Reticularia, 196 

 Reticulum, 642 

 Retina, 129, 131 

 Retina of vertel>rates, 540 

 Retinaculum, 49^^ 

 Retinula, 405 

 Retitelariiie, 453 

 Rliabdites, 270 

 Rliabditis, 300 



Rhabdocoelida, 269, 271 

 Rhabdom, 129, 405 

 Rhabdonema, 145, 300 

 Rhabdopleura, 514 

 Rhachiglossa, 380 

 Rhachis, 414 

 Rhamphast(js, 616 

 Rhea, 613 

 Rhegmatodes, 242 

 Rhinoceros, 641 

 Rhinocerotidae, 641 

 Rhinoderma. 585 

 Rliizocephala, 426 

 Rhizocrinus, 342 

 Rhizopoda, 187 

 Rhizostomeas, 250 

 Rhopalocephalus, 213 

 Rhopalocera, 495 

 Rhopalonema, 234 

 Rhynchobdellidae, 321 

 Rhynchobothrium, 286 

 Rhynchocephalia, 596 

 Rhynchonella, 325, 32S 

 Rh}'nchophora, 485 

 Rhynchota, 489 

 Rhytina, 645 

 Rib, 517, 518 

 Right whale, 646 

 Ring canal, 331 

 Rocky Mountain sheep, 643 

 Rodentia, 638 

 Rods and cones, 129, 540 

 Root barnacles, 426 

 Rorqual, 646 

 ROsel von Rosenhofen, 13 

 Rossia, 395 

 Rostellum, 2S0 

 Rostrum, 389, 424, 465 

 Rotalia, 18S, 19S 

 Rotatoria, 293 

 Rotifera, 293 

 Ivound worms. 29S 

 Rove beetles, 484 

 Rudistida?, 36S 

 Rugosa, 258 

 Rumen, 641 

 Ruminantia, 641 

 Rupicapra, 042 



