104 
MODERN SYSTEM. 
** Tail with the superior double styles, having the style processes 
subequal. 
Sp. 3. Gam. Locusta. Eyes lunate. 
Cancer Gammarus Locusta. Montagu, Trans. Linn. Soc. ix. 92. Garni 
marus Locusta. Leach, Edin, Encycl. vii. 403. — Trans. Linn. Soc. xi, 
359. — Sapp, to Encycl. Brit. L 42.5. 
Inhabits the British sea. 
Sp. 4. G'am. Camptolops. Eyes flexuous, 
Gammarus Camptolops. Leach, Edin. Encycl. vii. 403. — Trans. Linn, 
Soc. xi. 360. — Supp. to Encycl. Brit. i. 425. 
Inhabits the sea about Loch Ranza, in the Isle of Arran. 
Genus 9. AMPITHOE. Leach. 
Superior antenna with no seta at the base of their fourth joint: tail 
simple above : hands ovate. 
Sp. 1. Am. rubricala. 
Cancer Gammarus rubricatus. Montagu, Trans. Linn. Soc. ix. 99. Gam- 
marus rubricatus. Leach, Edin. Encycl. vii. 402. Ampithoe rubrir 
cata. .Leach, Edin. Encycl. vii. 432. — Trans. Linn. Soc, xi. 360. — 
Supp. to Encycl. Brit. i. 425. 
Inhabits die sea of the southern coast of Devon. 
Genus 10. PHERUSA. Leach, 
Superior antenna; with no seta at the base of their fourth joint : tail sim- 
ple above: hands filiform. 
Sp. L Vhe. Fucicola. Testaceous-cinereous or gray cinereous mottled 
with reddish. 
Pherusa Fucicola. .Leach, Edin. Encycl. vii. 432. — Trans. Linn. Soc. xi. 
300. — Supp. to Encycl. Brit. i. 426. pi. 21. 
Inhabits fuci on the southern coast of Devon. 
Snaps 4. Antenna four-jointed; under ones longest, leg-shaped. (Four 
anterior legs monodactyle.) 
Subdivision 1. — Second pair of legs with a large hand. 
Genus 11. PODOCERUS. Leach. 
Eyes prominent: four anterior legs monodactyle. 
Sp. 1. Pod- variegatus. Body varied with red and white. 
Podocerus variegatus. Leach, Edin. Encycl. vii. 433. — Trans. Linn. 
Soc. xi. 361. — Supp. to Encycl. Brit. i. 126. 
Inhabits the southern coast of Devonshire, amongst confervas and co- 
rallines. 
Genus 12. JASSA. Leach. 
Eyes not prominent: four anterior legs monodactyle, with oval hands) 
second pair with its internal edge dentated. 
