PORTUNUS CORRUGATUS. 
Tas. VILL.---Fig. 1---2. 
P. («. b.) testa convexa lineis transversis serrato-granulatis ciliatis utrinque 5-dentata: dentibus 
tribus posticis acutioribus, fronte trilobo ; lobis subgranulato-serratis ; medio majore sub- 
acuminato : manibus supra uni-dentatis : unguibus posticis apice acutis. 
Cancer corrugatus. Penn. Brit. Zool. iv. 5. Pl. 5. fig. 9. 
Herbst. Tab. 7, fig. 50. 
Portunus corrugatus. Bosc. Hist. Nat. des crust. i. 217. 
Leach Edinb. Encycl. vii. 390. 
— Trans. Tinn. Soc. xi. 315. 
Fig. 1. P. corrugatus mas. 2 Pedipalpus. 
Pennant discovered this species on the shores of Skie, opposite to Loch Jurn, and 1 have 
received young specimens from Mr. C. Prideaux, who caught them in the Plymouth Sound. 
The fissure in the under part of the orbit is wide ; in the two following species the sides of the 
fissure meet together. 
a 
PORTUNUS EMARGINATUS. 
Fig. 3---4. 
P. (x. b.) testa convexiore lineis abbreviatis e granulis compositis, dentibus quinque utrinque, 
penultimo minore; fronte emarginato: manibus supra uni-dentatis: unguibus posticis 
acutis. 
Portunus emarginatus. Leach Edinb. Encycl. vii. 390. 
Trans. Linn. Soc. xi. 316. 
Fig. 3. Portunus emarginatus. 4. Femine abdomen. 
This species inhabits the South-Western coast of Devon, but is extremely rare. I have once 
received it from Mr. Gibbs. 
