^H. araneus.^ A species which especially resembles a toad in its form. Found off the northern New England coast. (Plate LXIII.) GENUS ^Loxorhynchus^ ^L. crispatus^, the sheep-crab. This crab occurs on the coast of southern California. The body is thick and about three inches across the widest portion, and tapers to a long, prominent rostrum. It is covered with long tubercles and spines and with short, bristly hairs; the legs are long, the chelipeds stretching fully two feet. GENUS ^Pugettia^ ^P. gracilis.^ A small spider-crab found on the Pacific coast from Alaska to Puget Sound. Its body is one half of an inch wide and [pg286] one inch long, with prominent spines on the sides of the carapace, which narrows in front into a long beak ending in two spines. It is red and green above, red beneath. (Plate LXIII.) GENUS ^Sternorhynchus^ ^S. sagittarius.^ This is one of the most delicately formed of the spider-crabs. The body has narrow longitudinal stripes of light and dark color. It lives offshore from Cape Hatteras southward. [Illustration: /Epialtus productus/, the kelp-crab; female.] GENUS ^Epialtus^ ^E. productus^, the kelp-crab. This crab inhabits the coasts of California and Oregon, and is found among seaweeds on rocks just below low-water mark. The carapace is smooth, is quadrate in form, is about two inches long and broad, has two spines on each side, and has a prominent denticulated rostrum. This is the most common spider-crab of the Pacific (California) coast. It is olive-green, thus simulating in color the kelp among which it lives. (See page 285.) GENUS ^Pitho^ ^P. aculeata.^ The carapace has six spines on each side, the middle two being sometimes partly united; the general outline is pentagonal; the length about one inch. Quite common on the Florida coast. (Plate LXIII.) GENUS ^Lambrus^ [Illustration: /Lambrus pourtalesii./] ^L. pourtalesii^, the long-armed spider-crab. The carapace is broader than it is long and has three elevations all covered with spines. The general surface is pitted and granulated; the rostrum points downward; the chelipeds are very long, the margins armed with spines; the breadth of the carapace is about one and a half inches; and the length of the chelipeds is about three and a half inches. Its range is from Cape Cod to Florida, and it lives among the rocks. (Plate LXIV.) [pg287] FAMILY ~CALAPPIDÆ~ GENUS ^Calappa^