MR. E. J. MIERS S REVISIOJiT OF THE HIPPIDEA.. 



315 



Names of the Species. 



3. R. strigillatus, Stimpson. 



4. R. truncatifrons, n. sp. 



Geographical Range. 



California. 

 China. 



1 . M. gracilis, Stm. 



2. M. quadrilobatus, n. sp. 



1. H. emerita (Linn.). 



2. fir. analoga, Stm. 



3. H. asiatica, M.-Edw. 



1. A. symnista (Linn.). 



Mastigochirus. 



China. 

 Philippines. 



HiPPA. 



Eastern coast of America (Cape 



Cod to Brazil). 

 Western coast of America (Cali- 

 fornia to Chili). 

 Indian Ocean, Indo- Malayan archi- 

 pelago. 



Fam. Albuneid.e. 



Albunea. 



2. A. guerinii, Lucas. 



3. A. microps, White, MS. 



4. A. gibbesii, Stimpson. 



5. A. oxyophthalma, Leach (ined.). 



6. A. lucasii, Saussure. 

 7- A. speciosa, Dana. 



Indian Ocean, Indo-Malayan archi- 

 pelago. 

 Gulf of Algiers. 

 Sooloo Island. 



South-east coast of United States. 

 West Indies, Cayenne, Brazil. 

 Mazatlan. 

 Sandwich Islands. 



1- L. scutellata (Desm.). 



2. L. venusta, Stm. 



3. L. myops, Stm. 



Lepidops. 



Peru ? St. Thomas. 

 West Indies (St. Thomas). 

 California (Cape St. Lucas). 



Blepharopoda. 



1. B. spinimana (Philippi.). Chili. 



2. B. Occident alis, Randall. California. 



3. B. spinosa, M.-Edw. and Lucas. Peru. 



As to Kdbits. — Until quite recently but little was known re- 

 specting the life-history and habits of the Hippidea ; but Mr. S. 

 I. Smith has, in his most interesting and valuable memoir on the 

 early stages of Rippa talpoidea (Trans. Connect. Acad. iii. 1877), 

 furnished a fully detailed account of the development of the 

 common species of the Eastern shores of the United States. He 

 states, with regard to its habits, that this animal is far more 

 abundant on the sandy coasts of the Southern United States, and 

 gives reasons for believing that the northern range of this, as of 



