CONTENTS OK VOLUME III. 



I. On Distomum crassicolle Rud. ; with brief notes on Huxley's proposed classification 



of worms* Plate L. By Charles Sedgwick Minot. (Published June 11, L878.) . . 1 



II. THE EARLY TYPES OF INSECTS J OR THE ORIGIN AND SEQUENCE OF INSECT LIFE IN PALAEOZOIC 



times, By Samuel H. Scudder. (Published March 6, 1879.) . . . . . 13 



III. Palaeozoic cockroaches: a complete revision of the species of both worlds, with 



an ESSAY TOWARD THEIR CLASSIFICATION. 1 Mates 2-6. By Samuel II. Scudder. (Pub- 

 lished November 29, 1879.) 23 



IV. New am> interesting hydroids from Chesapeake Bay. Plates 7-',). By Samuel F. Clarke. 



(Published January, 1882.) . 135 



V. Archipolypoda, a subordinal type of spined biyriapods PROM THE CARBONIFEROUS FOR- 

 MATION. Plates 10-13. By Samuel II. Scudder. (Published May, 1882.) . . 143 

 VI. Some observations <>n the embryology of the teleosts. Plates 14-16. By J. S. 



Kingsley and H. W. Conn. (Published April, 1883.) 183 



VII. The carboniferous hexapod insects OF Great Britain. Plate 17. By Samuel H. 



Scudder. (Published Juuc, 1883.) 213 



VIII. On the development of Oecanthus niveus and its parasite, Teleas. Plates 18-25. 



By Howard Ay ers. (Published January, 1884.) ........ 225 



IX. Two new and diverse types of carboniferous myriapods. Plates 26 and "27, tigs. 1-4. 



By Samuel H. Scudder. (Published March, 1884.) 283 



X. The species of Mylacris, a carboniferous genus of cockroaches. Plate 27, figs 5-11. 



By Samuel II. Scudder. (Published March, 1884.) 299 



XI. Notes on the peeping fko<;, Hyla pickeringii LeConte. Plate 28. By Mary H. Hinckley. 



(Published May, 1884.) m- 311 



XII. PaLAEODIC TYOPTERA : OR THE AFFINITIES AND CLASSIFICATION OF PALAEOZOIC HeXAPODA. 



Plates 29-32. By Samuel H. Scudder. (Published April, 1885.) . . . .319 



XIII. Winged insects from a paleontological point of view, ok the geological history 



of insects. By Samuel H. Scudder. (Published April, 1885.) ..... 353 



XIV. The life-history of the Hydromedusae : a discission of the origin of the Medusae, 



and of the significance of metagenesis. Plates 37-44. By W. K. Brooks. (Pub- 

 lished Juue, 1886.) , ; 359 



XV. The oldest known insect-larva, Mormolucoides articulatus, from the Connecticut 



River rocks. Plate 45. By Samuel H. Scudder. (Published September, 1886.) . 431 

 XVI. Note on the supposed myriapodan genus Trichiulus. By Samuel H. Scudder. (Pub- 

 lished September, 1886.) ............ 438 



XV 11. A review OF mesozoic cockroaches. Plates 46-48. By Samuel H. Scudder. (Pub- 

 lished September, 1886.) 439 



XVIII. A North American Anthurus — its structure and development. Plates 49-50. By 



Edward A. Burt. (Published October, 1894.) 487 



Index ................ 507 



Errata ................ 509 



