21 CRUSTACEA. 



a, b. Males. Devon. From the collection of Col. Montagu. 

 c e. Females. Devon. From the collection of Col. Montagu. 

 /- h. Young. Presented by Dr. Goodall. 

 j. Torbay. Presented by J. R. Griffiths, Esq. 

 k. Male. Europe. 



PORTUMNUS monodon, Leach, Linn. Trans, xi. 314. 

 a, b. 



PLATYONYCHUS, (Latr.) Bell. 



PLATYONYCHUS ocellatus, Latr. Enc. x. 152. Edw. Crust, i. 437. 

 Bell, Brit. Crust. 83 (note). Gould. Inv. Mass. 324. Can- 

 cer o., Herbst, t. 49, /. 4. Portunus pictus, Say, Journ. Acad. 

 Phil. i. .!,/. 4. 



a, b. United States. Presented by Thomas Say, Esq. 



PLATYONYCHUS punctatus. Corystes (Anisopus) p., De Haan, 



Faun. Jap. 13. 

 a. Japan. From the Leyden collection. 



PLATYONYCHUS bipustulatus, Edw. Crust, i. 437. t. 17, /. 7-10. 



Cor. (Anisopus) trimaculatus, De Haan, Faun. Jap. 13. 

 a. Chili. From Prof. Bell's collection. 



POLYBIUS, Leach. 



POLYBIUS Henslowii, Leach, Mai. t. 9 B. Edw. Crust, i. 439. 



De Haan, Faun. Jap. 12. Latr. Enc. Meth. x. 152. 

 a, b. Males. Devon. From the collection of Dr. Leach. 

 . c. Female. Devon. From the collection of Dr. Leach. 



d. Male. Europe. 



e. Male. Cornwall. Presented by D. W. Mitchell, Esq. 



PORTUNUS, Fabr. 



PORTUNUS puber, Fabr. Ent. Syst. Suppl. 365. Leach, Mai. t. 



6, Desm. t. 6.f. 5. Edw. Crust, i. 441. Cuv. R. A. (Crock), 



t. 10, f. 2. Bell, Brit. Crust. 90. Cancer pub., L. Syst. Nat. 



1046, 40. C. velutinus, Penn. Brit. ZooL iv. t. 4, /. 8. 



Herbst, t. 7,f. 49. 

 a e . Males. S. W. coast of Devon. From the collections of 



Dr. Leach and Col. Montagu. 

 /. Female. Devon. 

 g, h. Nice. 



j m . Cornwall. Presented by D. W. Mitchell, Esq. 



PORTUNUS depurator, Leach, Mai. t. 9, /. 1. Cancer d., var. 

 Penn. Brit. Zool. iv. 4, t. 4, /. 6 A. Port, plicatus, Risso, 

 Crust. Nice. Edw. Crust, i. 442. 



