MODERN SYSTEM. 
102 
Sp. 1. Tal. Locusta. Antennas subtestaceous-rufous, of the male longer 
than the body, of the female shorter ; body cinereous, varied with 
darker cinereous. 
Oniscus Locusta. Pallas? Talitrus Locusta. Latr., Bose, Leach, As- 
tacus Locusta. Penn. Bril. Zool.rv. 21. Cancer {Gamnarus) Saltator. 
Montagu, Trans. Linn. Sue, xi. 94. 
Inhabits the sandy shores of the European Ocean. 
The specific name Locusta is probably derived from the form ot 
its protruded mouth, which has a general resemblance to the same 
part in the G uyllides. 
It has never been observed in the water ; it burrows in the_ sand, 
and leaps about on the shore. Talitrus littorulk, described in the 
seventh volume of the Edinburgh Encyclopedia, is merely the fe* 
male of T. Locusta. 
The use of this animal (which is generally denominated Sand- 
hopper) In the economy of nature, appears to be that ol contributing 
to lire dissolution of putrid animal and vegetable matter ; serving 
in return as food to the shore birds, who devour it with avidity. 
Genus 3. OUC1IESTIA. Leach. 
Four (inferior legs of the male monodactyle; second pair with a com- 
pressed band; of the female, with the anterior pair monodactyle, the 
second didactyle : upper antenna not longer than the two first joints 
of the under ones. 
Sp. 1. Ore. Uttorea. 
Cancer Gummarm littoreus. Montagu, Trans. Linn. Soc. xi. 96. Orche* 
stia littorea. Leach, Edin. Encycl. vii. 402. pi. 21. fig. 6. — Trans* 
TJrni. Soc. xi. 350. — Supp. to Encycl. Brit. i. 424. 
Inhabits many of our shores, and is found at the mouths of rivers, hut 
has never been observed in the water. It resides under stones and 
l'uci, and in the evening it leaps about and is devoured by birds. 
Stiiu’s 2. — Antenna lbur-jointed, the last joint composed of several 
little joints ; upper ones rather shortest. 
Genus 4. DEXAMtNE. Leach. 
Four anterior legs sub-equal, monodactyle, furnished with a filiform' 
subovate band : 1 antenna with their first joint shortest: eyes oblong; 
not prominent, inserted behind the superior antenna: : tail on each 
side with three double styles, and above on each side with one move - 
able style. 
Sp. 1. Dec. spinosa. Segments of the abdomen behind, produced iu ta 
spines. 
Cancer (Gammarus) spinosus. Montagu, Trans. Linn. Soc. xi. 3. DeX' 
amine spinosa. Leach, Edin. Encycl. vii. 433. — Zool. Miscel. ii. 
— Trans, Linn. Soc. xi. 359. — Supp. to Encycl, Brit. i. 425. 
Inhabits the sea of the western coasts of Britain. 
