No. 4.] NORTH-AMERICAN ECHWRIDS. 177 



Anal glands 9 cm. long, simple, very thin walled, and with- 

 out visible funnels. Intestine filled with the powdered shells of 

 small lamellibranchs. 



The chief interest in this specimen centers in the new local- 

 ity. It has been reported hitherto only from the Red Sea, the 

 Isle of Bourbon, the Malay Peninsula, and New Guinea, about 

 as far distant as possible from the Bahamas. But it evidently 

 belongs to the West Indian fauna and adds one more to the 

 Atlantic species of this genus. Again, this is one of the spe- 

 cies in which the number of muscle bands has been given as 

 invariable and fourteen in number. The occurrence of sixteen 

 bands in the present specimen shows that, like most of the 

 other species, the number varies within narrow limits. The 

 position of the anterior nephridia in front of the anal setae, as 

 in T. candex Lampert, is also worthy of note. 



STATE NORMAL SCHOOL, 



WESTFIELD, MASS., 



March 8, 1900. 



LITERATURE CITED. 



1. ANDREWS, E. A. Anatomy of Sipunculus Gouldii Pourtales. Stud. 



Biol. Lab. Johns Hopkins Univ. Vol. iv. 



2. CONN, H. W. Life History of Thalassema mellita. Stud. Biol. Lab. 



Jo/ins Hopkins Univ. Vol. iii. 1884-87. 



3. COUTHOUY, J. P. Description of New Species of Mollusks and Shells. 



Bos. Journ. A r at. Hist. Vol. ii. 1838. 



4. FORBES AND GOODSIR. Natural History of Thalassema and Echiurus. 



Edinburg New Phil. Journ. Vol. xxx. 1841. 



5. GOULD, A. A. Report on the Invertebrata of Massachusetts. Boston, 



1841. 



6. GREEK, R. Die Echiuren (Gephyrea armata). Acta Ac. German. 



Vol. xli, pt. ii. 1879. 



7. GREEF, R. Ueber Echiuren und Echinodermen. Archiv fur Natur- 



gesch. 46 Jahrg. 1880. 



8. POURTALES, L. Gephyreans of the Atlantic Coast of North America. 



Amer. Asso. Adv. Set. for 1851. Vol. v. 1852. 



9. QUATREFAGES, M. DE. Mdmoire sur 1'Echiure de Gaertner. Annal. 



des Set. Nat. Ser. 3, T. vii. 1847. 



