82 



Animals in Massachusetts. 



of Ipswich, particularly for the water-beetles; and to Prof. N. M.Hentz, formerly 

 of Northampton, to Drs. Pickering, Gould, and J. S. C. Greene, Mr. John Ran- 

 dall, Mr. T. Nuttall, Mr. John Bethune, and Miss D. Dix, for several interesting 

 insects. Even with these valuable accessions the present list must fall very far 

 short of the actual number of species or kinds existing in this Commonwealth. 

 The proportion of insects to plants has been stated to be six species of the former 

 to one of the latter. The flowering plants of Massachusetts amount to above 

 1200 species ; hence our insects cannot be much less in number than 7000 species. 



T. WILLIAM HARRIS, 



Librarian of Harvard University. 



Cambridge, (Mass.) Oct. 16, 1834. 



IX.— RADIATA. 



This extensive class of animals has yet received but little attention in Massa- 

 chusetts ; comprehending, as it does, creatures of not much use to man, and for 

 the most part inhabiting places out of the reach of common observation. In re- 

 spect to some of them, also, it seems not yet to be agreed, whether they ought to 

 be regarded as animals or plants. Through the assistance of Dr. Gould, I am 

 able to mention a few genera and species. But I hope the deficiency of the list 

 will lead those naturalists, who are favorably situated for examining these ani- 

 mals, to enlarge and perfect it. 



I. — ECHINODERMATA. 



Asterias. 



spinosus, Say. Sea- Star. Whole coast. 

 Echinus. 



granulatus, Say. Sea-urchin. do. 

 Scutella. 



pentaphora. Beaches on the whole coast. 



CLASS II. — ENTOZOA. 



Filaria. 



many species. 

 Tricocephalus. 



dispar, Rudolphi. Inhabiting man. 

 Ascaris. 



lumbricoides, Lin. do. 



vermicularis, Lin. do. 



mystax, Rud. Inhabiting the cat. 

 Strongylus. 



gigas, Rud. Kidneys of the Mink, &c. 

 Pianaria. 



several species. 

 Taenia. 



tata Um ' } Tape Worm > m man - 

 Taenia. 



inhabiting the cat. 

 Cysterus. 



cellulose, Gmel. On hogs, producing measles. 

 CaBnurus. 



cerebralis, Gmel. Brain of Sheep, producing the staggers. 



