106 Description of a New Species of Eupsychortyx. 



second species removes it from Pinnularia, which is character- 

 ized by its markings being costse not resolvable into dots. Of 

 N. maculata I have specimens from Duval's Creek near Enter- 

 prise, Florida, for which I am indebted to Dr. Christopher 

 Johnston of Baltimore, Md. 



While examining the Ch^-leston mud, I noticed that Smith's 

 Eiipodiscus radiatus, as described and figured in the first 

 volume of his " Synopsis," is not the same as the form described 

 under that name by Bailey in 1850. Roper remarked this same 

 fact (Trans. Mic. Soc, Lond., Yol. YII. p. 19), but was in some 

 doubt until I had the pleasure of forwarding to him authentic 

 specimens from Bailey's cabinet, when he wrote to me that the 

 examination of them confirmed his opinion, that " Smith was 

 in error in referring the Thames Diatom to that species. It is 

 a perfectly distinct and a true Eupodiscus." 



XIY. — Description of a new species of Eupsychokttx. 



By D. G. Elliot, F.Z.S. 

 Read March 12, 1860. 



Eupsychortyx: leucofrenatus. 



Plate III. 



Sp. Ch. Top of head, nape of neck, and upper part of throat, 

 rufous brown. A line commencing above the eye going down 

 side of head, and one from below the eye running to, and 

 encircling the throat, white ; each feather tipped with black. 

 Sides of neck and lower part of throat chesnut, streaked with 

 black and white. Forepart of back dull pinkish red, with fine 

 zigzag lines of black ; lower back with scapulars, tertials and 

 upper tail coverts, brownish ash much blotched with black. 

 Both edges of tertials yellowish white. Primaries and second- 

 aries brown, with the outer edge of the latter mottled with 



