252 REPORT OF NEW JERSEY STATE MUSEUM. 



though without bright markings, sometimes varied with brown 

 or reddish tints which fade out in alcohol Length 1 1 mm. 



Remarks. — Originahy described from Great Egg Harbor, 

 where it -was found with Idotea balthica. It ranges north to 

 Massachusetts, and south to Florida and the Bahamas. It lives 

 in tide-pools, among eel-grass or alg£e, sand, gravel, etc. It has 

 been taken from four and one-half to eighteen fathoms in depth. 

 Verrill says it lives among the Corallina and other algae in the 

 tide-pools. Its colors are equally variable with those of the other 

 species, and are often variously shaded brown, dull reddish or 

 light red, colors well adapted to blend with the colors of the 

 Corallines. Mr. Witmer Stone secured it at Point Pleasant. 



Erichsonella attenuata (Harger). 



Plate yj. 



Erichsonia attenuata Harger, Rep. U. S. F. Com.. I, 1871-72 (1873), P- 570, 

 PI. 6, fig. 27. Great Egg Harbor, New Jersey. Nen' Haven, Connecticut. 



(Harger) Verrill, Rep. U. S. R Com., I, 1871-72 (1873), p. 370 



(habits). 



Harger, Proc. U. S. Nat. Mus., H, 1879, p. 160. Great Egg Harbor, 



N. J., and Connecticut. 



Harger, Rep. U. S. F. Com., IV, 1878 (1880), pp. 356, 434, Pis. 6-7, 



figs. 36-37. Great Egg Harbor, N. J. and Connecticut. 



Leidy, Proc. Acad. Nat. Sci., Phila., 1888, p. 233- Beach Haven, New- 



Jersey. 

 Cleantis attenuata Miers, Journ. Linn. Soc. London, XVI, 1883, p. 79. Egg 



Harbor, New Jersey. 

 Erichsonella attenuata H. Richardson, Amer. Nat., XXXIV, 1900, p. 228. 



Cape Cod to North Carolina. 



H. Richardson, Proc. U. S. Nat. jMus., XXIII. 1901, p. 543. Great 



Egg Harbor, N. J., and Connecticut. 



H. Richardson, Bull. U. S. Nat. Mus., No. 54, 1905, p. 400, figs. 447- 



448. Great Egg Harbor, N. J. and Connecticut. 



M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. 41. 



(Connecticut.) 



Description. — Body elongated, narrow, length six times 

 greater than width. Head broader than long, with front slightly 

 emarginated between anterior lateral anglies. Eyes composite, 

 small, placed laterally or at sides of head, and midway between 

 front and hind edges. A pronounced elevation on head between 



