. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . n the abdomen,together with the sharp telson, forma fan-like swimming-tail. As in allshrimps, the antennae are long and haveplate-like antenna! scales at the base,which are fringed with hairs. The man-dibles are long. The movable finger ofthe chela is folded across the extremityof the claw. C. frandscorwm, the Californiashrimp. This species is about threeinches in length. It is distinguishedfrom C. rulgaris by its larger size andby the greater length of the movablefinger of th
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . n the abdomen,together with the sharp telson, forma fan-like swimming-tail. As in allshrimps, the antennae are long and haveplate-like antenna! scales at the base,which are fringed with hairs. The man-dibles are long. The movable finger ofthe chela is folded across the extremityof the claw. C. frandscorwm, the Californiashrimp. This species is about threeinches in length. It is distinguishedfrom C. rulgaris by its larger size andby the greater length of the movablefinger of the chela, which folds parallelto the side of the claw instead of acrossits extremity. Its color is light or darkyellowish-gray, mottled. This is theshrimp extensively gathered by theChinese for commercial purposes. Theshrimp-meat is dried and cured, andthen separated by blowers very muchas wheat is cleaned. It is exported toEastern countries in great quantities,the value of the export being estimated at , , . CrfDigmi r»7;/«, the common saiul-snrimpj one hundred thousand dollars per annum. mak, Iiatunii CREEPING FORMS: LOBSTERS AND CRAWFISH FAMILY ASTACOIDJE GENTS There are but three species of this genus, which is the most im-portant one of all the Cnisf<in<i. They are //. nili/aris of Europe,H. rtijiiiixix of the Cape of Good Hope, and H. nun rimiius, whichoccurs on the eastern coast of the United States from Labradorto New Jersey. The lobster-fishery is one of great importance,and of such value that it is governed by stringent laws. The 262 MARINE INVERTEBRATES annual catch on the Atlantic coast of North America amounts tomany millions of lobsters, the money value of which is verylarge. H. americanus, the common lobster of the Atlantic coast. Thecharacteristic feature of the lobster is its enormously developed chelae, or pincer-claws, which are on thefirst pair of walking-feet. Smallclaws occur on the next two pairs,and simple hooks on the remain-ing- two pa
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
