ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
89 
Protozoan Parasites of Termites.* — Mr. James F. Porter has found, 
in the intestine of Termes flavipes in Cambridge, U.S.A., the curious 
Infusorian parasites already described by Leidy in New Jersey Termites, 
i.e. Triclionympha agilis, Pyrosonympha vertens , and Dinenympha gracilis* 
The last form the author is inclined to regard as merely the young of 
Pyrosonympha ; while he believes that the forms described by Leidy as 
the young of Trichonympha agilis are probably specifically distinct both 
from this species and from each other. The paper includes numerous 
notes on the anatomy and habits of the parasites. They were found in 
the gut in large numbers, and were accompanied by Gregarines. 
Haematozoan Infections of Birds and Man.f — Dr. W. G. Maclallum 
states that the observation of Opie, who pointed out that there are two' 
adult forms of Halteridium in crows, may be readily confirmed. The 
one is hyaline and non-staining, the other granular and darkly staining 
with methylen-blue. The hyaline form becomes flagellated, and the 
flagella, on becoming free, act after the manner of spermatozoa. One, 
and only one, gains entrance into a non-motile granular sphere, and 
by the coalescence of the two, the fusiform body, having a pigmented 
appendage and refractive nucleus-like corpuscle, is produced. This is 
the vermiculus described by Danilewsky. The author has recently 
observed a very similar process in human blood. But in this instance, 
after the flagellum had entered the non-motile form, the organism merely 
swelled up, and no appearance analogous to the vermiculus was observed. 
* Bull. Mus. Comp. Zool. Harvard, xxxi. (1897) pp. 47-68 (6 pis.). 
f Johns Hopkins Hosp. Bull., viii. (1897) pp. 235-6. 
