. Beginners' Zoology . Fig. 178. — The tarantula. Fig. 179. — Trap-doorspider. M h. Fig. 182. — Laying egg. Fig. 183. — Foot of spider. Illustrated Study of Spiders (Figs. 178-183).—The tarantula, like most spi-ders, has eight simple eyes (none compound). Find them (Fig. 178). How dospiders and insects differ in body ? Number of legs ? Which have more joints tolegs? Does trap-door spider hold the door closed (Fig. 179)? How many pairsof spinnerets for spinning web has a spider (Spw, 180) ? Foot of spider has howmany claws ? How many combs on claws for holding web ? Spiders spin acocoon for hol

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. Beginners' Zoology . Fig. 178. — The tarantula. Fig. 179. — Trap-doorspider. M h. Fig. 182. — Laying egg. Fig. 183. — Foot of spider. Illustrated Study of Spiders (Figs. 178-183).—The tarantula, like most spi-ders, has eight simple eyes (none compound). Find them (Fig. 178). How dospiders and insects differ in body ? Number of legs ? Which have more joints tolegs? Does trap-door spider hold the door closed (Fig. 179)? How many pairsof spinnerets for spinning web has a spider (Spw, 180) ? Foot of spider has howmany claws ? How many combs on claws for holding web ? Spiders spin acocoon for holding eggs. From- what part of abdomen are eggs laid ^E, 182;2, 181) ? Find spiders air sacs, h(, Fig. 181; spinning organs, sp; fang, i/; poisongland,^; palpi,/5/; eyes, au; nerve ganglia, <7^, ?(^; sucking tube, j-r; stomach, J;intestine, ma; liver, le; heart, /«, (black); vent, a. Give two reasons why a spideris not an insect. How does it place its feet at each step (Fig. no) ? (Does thesize of its nerve ganglia indicate great or little intelligence ? Why do you thin

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