Salenia varispina has been dredged hy Thomson,* in deep watei', off the 

 coast of Portugal ; so that, to judge from the species thus far observed, every 

 exploration adds to the number of deep-water species which have a wide 

 geographical range. Coelopleurus has been dredged by Thomson off the 

 Bermudas, as well as a small Ananchytcs-lilie Echinus, probably Paleopneus- 

 tes cristatus. 



Of the shallower water species we find as far south as Cape Dos Bahias 

 species found in the West Indies, and extending northward along the eastern 

 coast of the United States. Dorocidaris hystrix and Toxopneustes variegatus 

 appear to Ije common at Cape Dos Bahias, and are found associated with 

 the following Patagonian species: Echinus margaritaceus (55 fxthoms), Echi- 

 nus magellanicus, and Goniocidaris canaliculata. So that, as far as the 

 Echini are concerned, Cape Dos Bahias seems to be the dividing line between 

 the Patagonian and the tropical Atlantic districts. 



Along the eastern Patagonian coast and the Straits of Magellan only sjie- 

 cies already known were collected. The following species, not especially 

 mentioned in this report, were collected from localities not recorded in the 

 Revision of the Echini ; very fine and large specimens of Goniocidaris cana- 

 liculata, measuring nearl}' one and a half inches in diameter, from Lat. 

 51° 26' South, Long. 08° 5' West, 57 fathoms; Strongylocentrotus albus, Port 

 Gallant, Patagonia ; Schizaster Philippii, in Smyth's Channel, 35 fathoms. 



On the west coast of South America, nothing of great importance was 

 collected. The collections made at the Galapagos show satisfactorily that 

 this group of Islands forms a part of the Panamic District. None of the 

 Echini of the East India types, usually said to exist there, were found. Only 

 the following species, all known, from the west coast of Central America, 

 were obtained at the Galapagos Islands : Cidaris Thouarsii, Echinometra Van 

 Brunti, Strongylocentrotus gibbosus, Toxopneustes semituberculatus, En- 

 cope micropora, Rhynchopygus pacificus. With the excejjtion of E. Van 

 Brunti, collected at Charles Island, the other species came from Indefatigable 

 Island. 



* W. Thomson, Nature, March, 1873. 



