8 FAUNA OF NEW ENGLAND. 



ECHINOIDEA. EUECHINOIDEA. DIADEMATOIDA. 



ECHIXOMETRIDAE. 



Echinus drohachiensis O. F. Miiller, Zool. Dan. Prod., 1776,. 

 p. 235. 



Lono- Island Sound and northward ; low water mark (north- 

 erly) to far beyond the 50 fathom line. 



ARBACIIDAE. 

 25 (2). Arbacia PUN^CTULATA (Lamarck) Gray. 



Common sea-urchin. 



A. Agassiz, Rev. Echini, 1872, p. 91, 263, pi. 2, fig. 4. 

 Echinus punctulatus Lamarck Anim. sans Vert., 1816, vol. 3, 

 p. 47. "l'oceax DBS Gran^des-Indes." 



Off Sankaty Head, Xantucket. through Vineyard and Long 

 Island Sounds, and southward ; low water mark to beyond the 



50 fathom line. 



CLYPEASTROIDA. 

 SCUTELLIDAE. 



26 (3). EcHiNARACHXius PARMA (Lamarck) Gray. 



Sand-doUai". 



A. Agassiz, Rev. Echini, 1872, p. 107, 316, pi. 11% figs. 4-5. 

 Scutella parma Lamarck, Anim. sans Vert. 1816, vol. 3, p. 11. 



"l'oCEAX DES InDES." 



Lonw Island Sound and northward; low water mark to far 

 beyond the 50 fathom hne. 



27 (4). Mellita pentapora (Gmelin) Liitken. 



Key-hole urchin. 



Echinus jjentaporus Gmelin, Syst. nat., 1788, vol. 1, pt. 6, p. 



3189. 



Mellita testudinata Klein. A. Agassiz, Rev. Echini, 1872, p. 



141, 322, pi. 12% figs. 1-2. 



