90 
MODERN SYSTEM. 
thickest: second pair of legs thicker than the following ones: c/o®* 
curved. 
Sp. 1. In. Dorsettensis. Beak short, emarginate; the clypeus beneath 
produced into a spine : shell anteriorly, with four little tubercles 
placed transversely; then with three spines, the anterior one strong' 
est; behind with three strong sharp spines, the middle one gene- 
rally longest and strongest, forming a slightly recurved line; hinder 
margin with two distinct obsolete tubercles. 
Cancer Dorsettensis. Penn. Brit. Zooi. iv. H. pi. 9. fig. 18. Cancer 
Scorpio. Fabr. Sp. Inst. i. 504. (Intel. Syst. Nat. i. 2078. Hcrbst, 
237. 130. Inachus Scorpig. fair. Eat. Syst. Sapp. 358. Macropu* 
Scorpio. Lair. Hist. Nat. des Crust, et dcs Insect, vi. 109. MajaScor- 
pio. Bose, Hist. Nat. des Crust, i. 252. Tnachus Dorsettensis. Leacht 
Ed in. Ewycl.Cu .431. — Maine. Podoph. Brit. tab. 22. Jig. 1 — 6. — Trans- 
Linn. Soc. xi. 330. 
Inhabits the British seas. 
C. Abdomen in both sexes six-jointed. Two anterior legs didactylv- 
Fam. VII. Lithodiad.e. Leach’s MSS. 
Fifth pair of legs minute, spurious. 
Genus 16. LITHODES. Latreillc, Leach. 
External double palpi with narrow cylindric footstalks : eyes approximat- 
ing at their base: shell very spiny, anteriorly rostrated. 
Sp. 1. Hit h. Maja. Legs and shell with sharp spines: beak spiny, with 
the tip bifurcate: fingers with tufts of hair. 
Cancer Maja. Linn. Syst. Nat. 104(3. Cancer horridus. Penn. Brit. Zool. i' r - 
7. pi. 7. Jig. 14. Inachus Maja. Fabr. Eat. Syst. Supp. 358. Maj® 
vulgaris. Bose, Hist. Nat. des Crust, i. 251. Lithodcs arctica. Ltdri 
Gen. Crust, el Insect, i. 10. Lithodes Maja. Leach, I-ldin. Ennjcl. vis 
395. — Trans. Linn. Soc. xi. 332. — -Supp. to Encycl. Brit. i. 416. — Mai- 
Podoph. Brit. tab. 24. 
Inhabits the Northern sea, and in our seas is very rare, or at least very 
local; occurring only on the rocky shores of Yorkshire and of Scot" 
land. 
Fam. VIII. Macropod i AD.®. 
Second, third, fourth, and fifth pair of legs alike and slender. Eyes no 1 
retractile. 
Genus 17. MAC1IOPODIA. Leach. Macro pus. Latr. 
Shell slightly spined ; beak long and fissured: eyes distant, subrenifornu 
much thicker than their peduncles : external antenna half the lengt' 1 
of the body; the second joint three times the length of the third- 
external double palpi slender ; the internal footstalk with the two cqua* 
