The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . wing the canal of thebreast, conveys to the mouth the small particles upon which theanimal feeds. The eggs are yellowish coloured; they are at firstround, but afterwards assume an angular form, which favours theirpreservation, since it appears that they are enabled to withstand avery considerable degree of drought until a fall of rain sufficientto cause them to hatch takes place. On quitting the egg the bodyis di\ided into two globu
The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . wing the canal of thebreast, conveys to the mouth the small particles upon which theanimal feeds. The eggs are yellowish coloured; they are at firstround, but afterwards assume an angular form, which favours theirpreservation, since it appears that they are enabled to withstand avery considerable degree of drought until a fall of rain sufficientto cause them to hatch takes place. On quitting the egg the bodyis di\ided into two globular masses, the anterior of which com-prises a single eye, two short antennae, two large branched organsserving for swimming, and two short and slender legs. Aftershedding their skin the first time, they have three eyes, the middleone being smooth ; the hinder part of the body is elongated, and 118 CRUSTACEA. the tail is terminated by two short filaments. Subsequently thelegs begin to appear by degrees, and the branched organs entirelydisappear. The genus Artemia (Leach)- comprises the Cancer salinusof Racket {Linn. Trans, v. ii.) or the brine shrimp. J. Brine Shrimp, in various stages of growth. Thompson and V. Andouin have both published interestingnotices of it. The body is oval, and flattened, with the headnot separated from it; the tail or abdomen is long, termi-nated by two small points. The brine shrimp, or Artemia (not Artemis, as Mr. Thompson, from whom I quote thefollomng observations, calls it) salinus, is a very small anddelicate animal; when full grown about half an inch in length,of considerable transparency, slightly tinged with yellow,and with a biglily polished surface : natm-e having constructedthem with members solely adapted to swimming, they seemto be in perpetual pm-suit of prey, gliding Avitli an almosteven motion through the water, and moving ^dth equal indif-ference and facility on the back, belly, or sides : the shapeof the animal, the undulating m
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Keywords: ., bookau, bookcentury1800, booksubjectcrustacea, booksubjectinsects
