30 CRUSTACEA. 



THELPHUSA, n. s. ? Thelph. cunicularis, Westw. Trans. Ent. 



Soc. i. 183, t. 19, /. 1-6. Var. ? 

 fl, b. East Indies. Presented by Gen. Th. Hardwicke. 



THELPHUSA indica, Latr. Enc. Meth. x. 563. Guer. Icon. Cr. 



t. 3,/. 3. Edw. Crust, ii. 13. Potamonautes ind. MacLeay, 



Ann. S. Afr. Ocypode aurantia, Bosc. i. 195. Tille naudon 



(Coromandelese). 



a, b. Females. Isle of France. From Dr. Leach's collection, 

 e, d. Var. ? Male and female. Cape of Good Hope. Presented 



by Townseud, Esq. 



THELPHUSA spinigera, n. s. 



a. Indian Ocean. Presented by Gen. Th. Hardwicke. 



THELPHUSA gracilipes, u s. 



a. Male. Philippine Islands. From Mr. C timing's collection. 



b. Female. Philippine Islands. From Mr. C inning's collection. 



THELPHUSA Cumingii, u. s. 



a. Male. Philippine Islands (Guimaras). From Mr. Cuming's 



collection. 



b. Female. Philippine Islands. River Naga or Bicol, Cama- 



rines South. From Mr. Cuming's collection. 



THELPHUSA grapsoides, n. s. 



a, b. Males. Philippine Islands. Mountain spring, Province of 

 Pampagua. From Mr. Cuming's collection. 



THELPHUSA perlata, Edw. Crust, ii. 13. Potaraonautes perl., 



MacLeay, Ann. S. Afr. 64. 

 a, b. Femaies. Cape of Good Hope. Presented by Dr. Andrew 



Smith. 



c. Male. 



THELPHUSA Berardi, Audouin, Expl. 82. Sawgny,Egypte,pL 

 2,/. 6. Edw. Crust, ii. 14. 



. Egypt. Presented by J. Burton, Jun., Esq. 



THELPHUSA Dehaanii, White. Thelph. Berardi, De Haan, Faun. 



Jap. t. 6 V /. 2 (not And.). 

 ft, b. Japan. From the Ley den collection. 



POTAMIA, Latr. 



POTAMIA Schomburgkii, n. s. 



a. British Guiana. Presented by the Chevalier Schomburgk. 



This species differs very considerably from the Potamia fluviatilis, 

 (Cancer fl., Herbst, i. t. 10, /. 61, Thelphusa dentata, Latr. 

 Enc. x. 564), and comes near Potamia chiliensis, Edw. and 

 Lucas, nOrligny, VAm. Mer.,pl. 10, /. I. 



