CRUSTACEA. 33 



PINNOTHERES maculatimi, Say, Journ. Acad. Phil. i. 450. 

 a c . Male and two females. United States, N. America. 

 From the collection of Mr. Say. 



XANTHASIA, White. 



XANTHASIA murigera, White, Annals and Mag. Nat. Hist. 1846. 



pl.2,f.2. 

 a, b. Females. Philippine Islands. From Mr. Cuming's collec- 



tion. 



PINNIXA, White. 



PINNIXA cylindrica. Pinnotheres cyliudricum, Say, Journ. Acad. 



Phil. i. 452. 

 a. Female. Georgia (Jeykill Island). From the collection of 



Mr. Say. 



Pi?s 7 NixA transversalis, (Pinnotheres transversalis, Lucas. D*Or- 

 bigny, VAm. Mer. p. 23, pi. 10, /. 3) is apparently nearly allied 

 to this. 



Family MYCTIRIDJS. 

 ELAMENA, Edwards. 



ELAMENA Mathaei, Edw. Crust, ii. 35. Hyraenosoma M.,Latr. 



MSS. Desm. 163. Ruppell, t. 5,/. 1. Hymeuosoma mira- 



bile, Leach, MSS. Brit. Mus. 

 a. Isle of France. From the collection of M. Matthieu. 



ELAMENA unguiformis, De Haan, Faun. Jap. t. 29, f. I, p. 76. 

 a. Junr. ? Philippine Islands (Siquej or). From Mr. Cuming's 

 collection. 



HYMENOSOMA, Leach. 



HYMENOSOMA orbiculare, Lair. MSS. Desm. 163, t. 26, f. 1. 



Edw. Crust, ii. 36. Cuv. R. A. (Crock), t. 35, /. 1. Leachi- 



um orb., M'Leay, Ann. S. Afr. 

 ae. South Seas (off the Cape of Good Hope.) Presented by the 



Earl of Derby. 



HALICARCINUS, White. 



HALICAKCINUS planatus, White, Annals fy Mag. Nat. Hist. 1846, 



pi. 2, f. 1. Leucosia planata, Fabr. Ent. Syst. Suppl. 350. 



Hymenosoma Leachii, Guerin, Icon. t. 10, f. 2. Voy. Co- 



quille, ii. p. 22. Hymenosoma Indentation, Hombr. fy Jacq, 



Voy. Pole Sud. pi. o,f. 27. 



a I. Falkland Islands. ' Presented by W. E. Wright, Esq. 



