Vol. XLIX 



A llglist, IQ2 5 



No. 2 



BIOLOGICAL BULLETIN 



MORPHOLOGY AND MITOSIS IN TRICHOMONAS 



TERMOPSIDIS, AN INTESTINAL FLAGELLATE 



OF THE TERMITE, TERMOPSIS. 1 



JUSTIN M. ANDREWS, 



INTRODUCTION. 



In recently published papers by Cleveland ('24 and '25) 

 establishing the symbiotic relationship of termites and their 

 intestinal protozoa, and the effects of starvation and oxygenation 

 upon this association, he mentions that he has observed in the 

 intestine of termites of the genus Termopsis, a flagellate possessing 

 "four anterior flagella, axostyle, and undulating membrane" 

 which he calls " Trichomonas termopsidis." The object of this 

 paper is to describe the morphology and mitosis of this species as 

 it occurs in the large Pacific Coast termites Termopsis nevadensis 

 Hagen and T. an gus tic oil-is Hagen. 



MATERIAL. 



Sixteen colonies of Termopsis furnished the material for this 

 study. Six of the colonies came from Oregon, and ten were from 

 California. Winged forms appeared in two of the Oregon 

 colonies, and were identified as T. nevadensis Hagen. Winged 

 forms appeared in five of the California colonies which were 

 identified as T. angusticollis Hagen. The insect material was 

 identified by Dr. T. E. Snyder, Specialist in Forest Insects, 

 Bureau of Entomology, U. S. Department of Agriculture, 

 Washington, D. C. 



1 From the department of Medical Zoology, School of Hygiene and Public 

 Health, Johns Hopkins University. A portion of this work was done at the Bio- 

 logical Laboratory, Cold Spring Harbor, Long Island, New York. 



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