SETCHELL— PARASITISM AMONG RED ALG^. 165 



36. Tylocolax microcarpus Schmitz (1897), on Lenormandia spec- 

 tab His Sond. 



T^y. Bcn::aitcma ycnoshimensis Yendo (1913), on Chondria crassi- 

 caitlis Harv. and Laiirencia paniculata J. Ag. 



Ceramiace^. 



*38. Syringocolax macrohlepharis Reinsch. (1874, 75) on Gelidium 

 cart Hag ineum (L.) Gaill. 

 39. Episporimn centroceratis Moebius (1885), on Centroceras 

 clavulatiim Mont. 



Squamariace^. 



*40. Pcyssonncliopsis cpiphytica Setchell et Lawson (1905) on 

 " Meredithia calif ornica J. Ag." 



CORALLINACE^. 



41. Choreoncnia Thurcti (Bornet) Schmitz (1889), on Jania 



ruhcns Lamour and Corallina squamafa E. & S. 



42. CJicctolitlwn deformans (Solms) Foslie (iSgS), on Jania nat a l- 



ensis Harv. 



In addition to the species listed above and which have been 

 selected from the species published as being certain or very nearly 

 so, there have resulted from collections, chiefly by N. L. Gardner, 

 on the Pacific coast of North America, some nine additional but as 

 yet unpublished species, together with four additional genera, also 

 as yet unpublished, as noted previously. All of these species are 

 parasitic on genera closely related to themselves. To make this 

 more evident and, at the same time, to make known the distribution 

 among the families of red algje of the new genera and species, a 

 brief resume of these as yet unpublished species is appended. In 

 Sphserococcacere, a new species of GracHariopJiila has been found on 

 Gracilaria Cimninghamii J. Ag. ; in Rhodymeniacese, three new 

 genera of a single species each on Fanchca laciniata J. Ag., Rhody- 

 menia Palmetta (Esp.) Grev. ?, and on Plocamium coccineum 

 (Huds.) Lyngb., respectively; in Delesseriacese, two new species of 

 Gonimophyllum, one on Nitophyllum Ruprechtianum J. Ag. and an- 



PROC. AMER. PHIL. SOC, VOL. LVII, L, JUNE 2I,'^igi8. 



