LITTORAL DISTRICTS. 229 



Phyllacanthus annulifera, Arachnoides placenta, 



Temnopleurus toreuraaticus, Nucleolites epigonus, 



Temnopleurus Reynaudi, Anochanus sinensis, 



Microcyphus maculatus, Brissopsis luzoniea, 



Pseudoboletia indiana, Paleostoma mirabilis, 



Salmacis rarispina, Faorina chinensis, 



Peronella Lesueuri, Schizaster ventricosus. 



Of these species, many lap over the northern limits of the Australian Dis- 

 trict, extend into the Indo-Pacific District, ranging along the Chinese and 

 Japanese coasts, and encroach extensively upon the Indo-African District; 

 they have been enumerated already. 



Pacific District (PL A). 



The strictly Pacific (PI A) species which do not extend to the westward 

 of the East India Archipelago, and but little north or south of the equator, 

 but many reach eastward as far as the Paumotu Islands, are : — 



Phyllacanthus gigantea, Mespilia globulus, 



Coloboeentrotus Mertensii, Fibularia australis, 



Strongylocentrotus nudus, Laganum Bonani, 



Pseudoboletia granulata, Lovenia subcarinata. 

 Toxopneustes maculatus, 



Japanese District (PL B). 



The Japano-Chinese District is remarkable for the large number of species 

 of Strongylocentrotus which take there a great development, some of the 

 species of the genus extending far south along the eastern coast of Austra- 

 lia. True species of Echinus also inhabit the coast, while the association 

 of the species of the District with such Indo-Pacific species as Hipponoe va- 

 riegata, Echinometra lucunter, Toxopneustes pileolus, Laganum depressum, 

 Maretia planulata, and Echinodiscus laevis, almost conceals the small num- 

 ber of species which characterize this peculiar region. There are, in addition 

 to the species of Strongylocentrotus and of Echinus, Temnopleurus Hard- 

 wickii, Phymosoma crenulare, Asthenosoma varium, Astriclypeus Manni, 

 Echinarachnius mirabilis, and Lovenia subcarinata, several of the species 

 found on the East Coast of Africa having their easternmost range on the 

 southern part of the coast of China, Several of the species extend to the 

 Sandwich Islands. 



