Homoptera This sub-order includes the cicads, lantern-flies, frog-hoppers, aphids and scale-insects.
Other genera of the family are parasitic on Hemiptera - bugs and frog-hoppers - but nothing is known as to the details of their life-history.
Comprising the primitive phyllopods, the minute copepods, the parasitic cirrhipedes and the powerful crabs and lobsters, and the highly elaborated sand-hoppers and slaters.
On its shores are tortoises, mud-turtles, crayfish and innumerable sand-hoppers; and at varying depths in the lake several species of Melania, Melanopsis, Neritina, Corbicula and Unio have been found.
The exact date of discovery is not known; but early records show it to have been preempted by a Dr Adams in 1812 for the manufacture of saltpetre, and his vats and hoppers are still to be seen.
The coal, previously elevated to hoppers, is dropped into the feeding chambers, which are so arranged that they can travel from end to end of the retorthouse and feed the coal into the retorts.
Guides are placed in front of the retort to direct its course to the coke hoppers or conveyer below, and to prevent scattering of the hot material.
Of the latter there are probably 12,000 to 15,000 species, including 140 butterflies, at least 180 grasshoppers, several hundred bees, &c. The so-called " grass hoppers," true locusts, have done great damage at times in Nebraska.
Eudyptes, containing the crested penguins, known to sailors as "Rock-hoppers" or "Macaronis," would appear to have five species, and Spheniscus four, among which S.
The material to be melted is introduced into the furnace from the hoppers HH through the charging holes in the roof.
These are the coarsest mills, in which all gossip is first rudely digested or cracked up before it is emptied into finer and more delicate hoppers within doors.