Cancer Scorpio Fabr. Sp. Ins. 1. 504. 47. 
—-— Mant. Ins. 1. 325. 77. 
Herbst Krab. 1. 237. 130. 
Gmelin Syst. Nat. 2978. 133. 
Fabr. Syst. Ent. 2. 462. 83. 
Inachus Scorpio. Fab. Supl. Ent. Syst. 358. 16. 
Inachus Dorsettensis. Leach Edin. Encycl. art. Crust. p. 481. 
Fig. 1, mas. 2, femine. 3, maris abdomen. 4, abdomen maturx femine. 5, abd. fem. 
immature. 6, Pes anticus maris. 
Rostrum short and emarginate, the clypeus beneath forming a spine; shell behind the 
rostrum with four small equal sized tubercles placed transversely ; behind these are placed three 
spines, the anterior or middle one strongest; behind these agam are three other strong acute 
spines (the middle generally largest and sharpest), arranged in a slightly recurved line; hinder 
margin with two distinct obsolete tubercles. 
This species which is very abundant on the Devonshire coasts, was first described by Pennant 
from specimens in the Portland cabinet, and afterward by Fabricius as a native of the Norwegian 
seas, under the name Scorpiv. Herbst and Gmelin never having seen this animal, have merely 
copied the Fabrician description, which, in Entomologia Systematica, is so good as to leave no 
doubt as to the reference. It is often taken by the shore net and dredge, at the mouths of rivers, 
and in deep water far from the shore; and is generally overgrown with coralloids, sponges, or 
other marine matter. The anterior or compound feet in the male are often very rough with little 
spines and tubercles; and those of the female also exhibit slight vestiges of spinules. The sides 
of the shell are often tuberculated, especially anteriorly. 
INACHUS DORYNCHUS. 
Fic. 7 et 8. 
I. Rostro hastiformi, fisso; testa antice spinis tribus triangulum delinientibus, postica majore; 
deinde tuberculo utrinque; postea tuberculis quinque tribus mediis approximatus obtusti- 
oribus in trjangulum dispositis pone lateralia et cum illis lineam retrorsum delinientibus ; 
margine postico tuberculis duobus distantibus obsoletis. 
Cancer Phalangium. Fabr. Ent. Syst. U1. 463. 847 
Trachus dorynchus. Leach Edin. Encycl. art. Crust. p. 431. 
Fig. 7, mas. 8, Ejusdem pes anticus. 
Rostrum hastiform, fissured ; anterior part of the shell with three spines placed in a triangle, 
the hinder one largest; then with a tubercle on each side; behind these with five tubercles, the 
three middle ones more obtuse, approximate and arranged in a triangle behind the lateral ones, and 
with them forming a line arched backwards; hinder margin with two obsolete distant tubercles. 
Like the foregoing species, it is generally overgrown with marine matter, which circumstance 
has doubtless concealed it from notice. I discovered the distinctions whilst cleaning a parcel of 
I. Dorsettensis from the Salcombe estuary for examination. The sides of the shell rarely exhibit 
any vestiges of spines or tubercles, and the compound feet are less rugose than in Dersettensis, 
indeed the hands are for the most part quite smooth. Like the foregoing species the shell is 
sprinkled with short yellowish or testaceous hair, which easily washes off with the Byssus; the 
hands too are slightly covered with long hair. 
