1894.] MICROSCOPICAL JOURNAL. 121 



37. Podoeyrtis triacanthii. 



38. Dictyopodium euryl()|)h()s. 



39. Rhopalocaniuni ornatum. 



40. Cycladophora hexapleura. 

 4L Lophoconus apiculatus. 



42. Theosyrintiiuin tubuhis. 



43. Lophocorys acaiithoce})hala. 

 44 Stichopiliuni inacro])teruni. 



45. Artopera loxia. 



46. Dictyomitra articulata. 



47. Eucyrtidium montiparuni. • 



48. Liihocampe clava. 



Note. — The authority for the al)ove uaiuew is as lollows : Nos. .">, !t, '2:5, 

 25, -28, 32, 33, 37, 38, 31), 47,48 were uained by Ehreul)erg ; all the others 

 were by Haeckel. 



LETIERS TO THE EDITOR. 



Note. — This coin inn is open to all correspondents wJio ~Miite upon the 

 topics enumerated under " Problems''' or iv/io ffi'i'e other informal ion of 

 interest. The fact that a problem has been anszvert d once need not deter our 

 friends frotn makinsr additional commeiits. To facilitate reference, corre- 

 spondents should cite the number as well as the page on -which have ap- 

 peared letters and queries to zvhich reference is made. The editor is not 

 responsible for the viezi's of others published in this periodical. 



Blood Corpuscles. — Relative to my article on the measure- 

 ment of blood corpuscles which you have done me the honor to 

 republish in your January number, 1894, I desire to say that 

 paper does not reflect my matured judgment upon the question 

 involved My latest views upon the subject formed upon more 

 extended observation, and experience will be found in the Sep- 

 tember number of the Medico-Legal Journal, 1872, published at 

 57 Broadway, New York. M. D. Ewell, M. D. • 



Bird Parasites. — I am especially interested in the parasites 

 of birds and should like very much to see the key to species pro- 

 posed to be published by Prof. Osborn. I use the large-size 

 Beck National Monocular and I am a'so interested in photo- 

 micrography. If I get into the parasites of birds I will send 

 you what I desire to print. R. W. Shufeldt, U. S. A. 



Tacoma, D. C, March 29, 1894. 



The Journal grows in interest and value with each number. 



W. LiGHTON, 



Omaha, Nebraska, March 15, 1894. . ~ 



