PEOCEEDIXGS OF UNITED STATES NATIONAL MUSEUM. 9 



Endocarpon cineretun, Pers. 



Saint Paul's Island, Behring Sea. 



Verrucaria matira, (Wahl.) Nyl. 

 Fort Alexander, Cook-s Inlet. 

 Spores simple, colorless, oblong, 12-1.5 mic. long by G-8 broad. 



Verrucaria ceuth.ocarpa, Wahl. 

 Fort Alexander, with the above species. Sterile. 



Verrucaria intercedens, Nyl. 



Cape Lisbume, Alaska. 



"Paraphyses dissolving; gelatina hymenea vinous red with iodine. 

 Spores 8, muriform, plurilocnlar, colorless, 23-32 mic. long by 11-1.3 

 wide." — ^YILLEY. 



Verrucaria intei media, (Th. Fr.) 



" Parapjhyses dissolving ; gelatina hymenea vinous red with iodine. 

 Spores 8, muriform, few-celled, 18-23 by 11-13 mic.~ — Willet. 



ON THE CHLOROPHYLLOID GRANULES OF VORTICELLA. 



Bt joh> a. bvser. 



In Science, '^o. 45, note 487, p. 772, the researches of Th. W. En- 

 gelmann, of Utrecht, are noticed and criticised. Having had occa- 

 sion several years since to study one of our American forms of green 

 YorficeUce, which at the time was identified as T. chlorostigma, I would 

 now take the opportunity to record what was then observed, inasmuch 

 as the facts as interpreted by me seem to lead to conclusions differing 

 very considerably from those reported by Professor Engelmann. Ob- 

 servations which I have made within the present year on the relations 

 of the Schizomycetes to living and dead Protozoa, have also led me to 

 conclusions at variance with that author's interpretations. 



In order to understand the points in dispute, it will be necessary to 

 describe the morphology of the form studied by the writer, as well as 

 the position and relations of the included chlorophylloid granules, all 

 of which may be more clearly comprehended by reference to the accom- 

 panying figure which shows the form in question enlarged 140 times, and 

 taken from drawings made several years since from the living subjects. 



The form was similar to other VorticeJke in everything except the 

 presence and orderly arrangement of the green granules. There was a 

 hollow stalk, sf, which ensheathed a muscle, m, which in turn was in- 

 serted into the very faintly striated base b of the body of the animalcule. 

 There was, as usual, an outer cuticular layer, c, covering the body and 

 continuous with the stalk st. Within the cuticle the ectosarc or ecto- 

 plasm ec formed the outer or cortical portion of the body of the ani- 



