 ... able review of previous writings on the subject, and is illustrated with figures taken from Verdat. In the American Entomologist (Vol. Ill, pp. 191-193, August, 1880) Dr. WS Barnard described the stages, with figures of the eggs, of a species common...  Bulletin - Página 331896Vista completa - Acerca de este libro
 | government printing office - 1884 - 732 páginas
...stages, with figures of the eggs, of a species common in the mountain streams around Ithaca, NY The eggs were found on the rocks on the banks a few inches above the surface of the water; the newly-hatched larvte were just at the surface, and from, this point there was a regular gradation... | |
 | United States. Department of Agriculture - 1884 - 744 páginas
...with figures of the eggs, of a species common in the mountain streams around Ithaca, V V. The eggs were found on the rocks on the banks a few inches above the surface of the water; the newly-hatched larvte were just at the surface, and from this point there was a regular gradation... | |
 | United States. Department of Agriculture - 1884 - 756 páginas
...stages, with figures of the eggs, of a species common in the mountain streams around Ithaca, NY The eggs were found on the rocks on the banks a few inches above the surface of the water; the newly-hatched larvae were just at the surface, and from this point there was a regular gradation... | |
 | Herbert Osborn - 1896 - 328 páginas
...stages, with fignres of the eggs, of a common species in the mountain streams around Ithaca, NY The eggs were found on the rocks on the banks a few inches above the surface of the water; the newly hatched larvie were just at the surface, and from this poiut there was a regular gradation... | |
 | 1896 - 322 páginas
...of a species found at Ithaca, NY (American Entomologist, Vol. Ill, pp. 191-193) : These eggs (fig. 3) were found on the rocks on the banks a few inches...account of their softness and close proximity to each o1ber they become distorted and polyhedral. One end is frequently flattened or concave. Each egg measures... | |
 | 1884 - 814 páginas
...with figures of the eggs, of a species common in the mountain streams around Ithaca, N . V . The eggs were found on the rocks on the banks a few inches above the surface of the water ; the newly-hatched larvee were just at the surface, and from this point there was a regular gradation... | |
 | 1887 - 908 páginas
...Simulium common in the mountain streams in the vicinity of Ithaca, N". Y. These eggs (Plate VIII, Fig. 7) were found on the rocks on the banks a few inches...as a means of facilitating the finding of those of the southern species here treated of. The eggs are deposited in a compact layer ; their shape is long... | |
| |
