169 



Pago. 



Sidera pantherina - 91 



pfeifferi 94 



SiluridsB 55 



Simoda 116 



SimarubaceiB 142 



Sinaloa 12,27 



Siriella gracilis 123 



Skerrett, J. S., Commander - 7 



Society Islands 11 



Sonora 9,18,36,49 



Southern California - 9 



Sparus pantherinus 73 



SpeuceBate ". 124,131,134,136 



Spheniscidae 33 



Spheniscus humboldti 33 



Spizellia breweri 10 



pallida 10 



breweri 10 



Squatarola helvetica 16 



St. Bartholom6 Bay 56 



Steindachner 49. 64 



Sterna alba 23 



Candida 28 



fissipes 27 



fuliginosa var. crissalis 27 



guttata 27 



(Haliplana) fuliginosa 27 



(Haliplanes) fuliginosa 27 



luctuosa 27 



nigra 2/ 



niBvia 27 



(Onychoprion) fuliginosa 27 



plumbea 27 



eerrata 27 



stolida 28 



surinamensis 27 



Stethojulis albovittata 99 



axillaris < 65 



Stimpson 115,116,119,121 



St. Martin's Island 17,41 



Strepsilas interpres melanocephalus 17 



melanocepbalus 17 



Strigidse 15 



Strix bracbyotus 15 



Bull. N. M. No. 7—12 



