A. E. Verrill — Marine Nemerteans of JVeto Enqland, etc. 403 

 Amphiporus thallius Verriu. 



AmpMporus sp., Verrill, Bulletin U. S. Nat. Mus., No. 15, p. 143, 1879 (with 

 description). 



Body, as preserved in alcohol, thick, not very long, somewhat 

 depressed, tapered a little to both ends, which are obtuse. Head 

 not very distinct, of the same width as the body; transverse foss?e 

 at back part of head not very distinct, running back obliquely on 

 each side, so as to form a V-shaped line on the middle above. 

 Ocelli minute, arranged in a small roundish cluster on each side, 

 on the pale antero-lateral margins. 



Color, in alcohol, dark bluish green above ; under surface and 

 margins of head yellowish white. In life " bright pea-green " 

 (Kumlin). Length, in alcohol, 25 to 30"'"; diameter 4 to 5""". 



Cumberland Gulf, N. lat. 66°, October 4, 1887; Arctic Island, at 

 low water, Sept. 13, 1877 (Kumlin coll.). 



The very peculiar and strongly marked color, which persists for 

 years in alcoholic specimens, appears to be characteristic of this 

 species. 



Amphiporus (?) superbus Verrill. 



Nareda superha Girard, in Stimpson, Invert. Grand Menan, p. 28, pi. 2, fig. 17, 1853. 

 Plate xxxiy, figure 16. 



This species was dredged oif Grand Menan in 40 fathoms by Dr. 

 Wm. Stimpson. The description by Girard was evidently based on 

 the drawing furnished him by Dr. Stimpson, and could not have 

 furnished anything more than the external appearance. I have 

 reproduced the original figure, somewhat reduced by photography. 

 The original description is as follows: 



"Nareda Grd." 



"Body elongated, subcylindrical. Head obtusely triangular in 

 front, neck slightly contracted; one pair of rounded ocelli." 



" iV! SMjt>er5a Grd. — Length from one to two inches; body pos- 

 teriorly attenuated ; head forming an equilateral triangle ; the base 

 of which is at the contracted neck. Color above uniform soft red; 

 head margined by a narrow band of white. The neck is also 

 marked by a transverse band of white, on which the eyes are situ- 

 ated, far apart. Below white. Dredged in thirty-five fathoms, in 

 the Hake Bay." 



The only character mentioned which could have been considered 

 as of generic value is the presence of two eyes (?) on the white 



Tbans. Conx. Acad., Vol. VIII. 53 June, 1892. 



