vi 
The American Naturalist. [Vol. XXV., 
Zoology: Abnormal Repetition of heir The Embryology of Spiders ; 
Insects of Central Africa; Studie on Amphioxus ; — Amphibian 
Blastopore; The Position of the Su un Grebes ; “ool i 
n 
branchus; The Anatomy of Scutigera; The Balancers o of Diptera ; 
; 
Nerve to ; nants 279—Re- 
production of Urnatella; The Growth of Corals; The Changes of the 
Salamander prendre viridescens, 3880—Plathelminthes ; Hermaphro- 
ditism in the Crustacea; Observations on a Remarkable Development 
in the Mudfish (Ji/ustrated); The Lower Jaw of Sphenodon; On the 
ng the Pinnipedi 
ders; Parmella sett The Spawning Season of San Diego Fishes; 
The Pine al Eye; Migration of Butterflies in Florida,.577—Motion in 
Zoologi 
tion of Color in Animals of a Collection; The Structure of Paaaag 
Metamerism in Hexapods ; Cottus b beldingii: A New igor Tempera- 
ture and Number of Vertebræ in Fishes; Note n Gyrinop 
maculicaudus Cope 
ea en a N a a Ai ORS E E E AE A ah TA GI E 
Embryology: A New Text- Book’ on the Embryology of Invertebrates; 
Amphioxus; The Life-History of the Red Blood-Cor puscles; Appen- 
dages of the First Abdominal Segments of the Gaibess Insects; Are 
oetal Me 
branes of Testudinata; The Placenta of Rodents ; On Shes Morphology 
-5 Bilateral ee Bands of the Echinoderm Larve, 381—The 
ent of 
r of Amphioxus; Developmen of the 
in singe hater of Glires, 406—Development of the Scy- 
phostoma of e Se ee Gaon Body-Cavities of Paludina vivipara, 
Aegae of Com d Ascidians; Development of the 
PAGE. 
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