CRYPTOBIA OF FISH 



641 



by binary fission was described by Martin (1910). Alexeieff (1910) 

 encountered T. intestinalis, not only in B. boops, but also in Motella tri- 

 cirrata. Apstein (1910) studied the form in Cyclopterus, and described it 

 as Heteromita dahlii. 



According to these authors, the various flagellates have essentially the 

 same structure as Cryptohia helicis. Alexeieft' gives the measurements of 

 T. intestinalis as 14 to 18 microns by 3 to 5 microns. The anterior 

 flagellum measures about 14 microns, while the posteriorly directed 

 flagellum, the axoneme of which is attached to the border of an undulating 

 membrane, measures about 28 mi- 

 crons. 



Martin (1913) published an ac- 

 count of the flagellates from these 

 three fish. He was convinced that 

 the form named T. intestinalis has 

 three anterior flagella, which are 

 often twisted together so closely that 

 observers have erroneously concluded 

 that only one flagellum is present. 

 Accordingly, Martin places it in a 

 new genus as Trypanoplasynoides 

 intestinalis. Structurally, according 

 to him, it resembles C. helicis, except 

 that it possesses three anterior flagella 

 instead of a single one. As regards 

 the flagellate of Cyclopterus, first seen 

 by Dahl, Martin states that a small 

 cytostome is present at the base of the 

 flagella, the axoneme of one of which 

 passes backwards over the surface of 

 the body, to which it is attached, 

 without there being any evidence of an undulating membrane. For these 

 reasons he follows Apstein (1910) in retaining it in the genus Heteromita as 

 H. dahlii. It certainly does not belong to this genus, the members of 

 which have two free flagella and axonemes arising from blepharoplasts 

 on the nuclear membrane (Fig. 142). It is better to retain it in the genus 

 Cryptohia at present, as also the form in the conger eel, for which Martin 

 retains the name Trypanoplasma congeri. Woodcock and Lodge (1921) 

 described as C. trematomi a flagellate which was found in the stomach and 

 intestine of a fish {Trefnatotnus hernacchii). 



Walker (1910) stated that he had obtained a culture of a trypanoplasm 

 from the intestine of the frog, Bana jyalustris, by inoculating agar plates. It 



I. 41 



Fig. 263. — Intestinal Trypanoplasms 

 OF Fish. (After Martin, 1913.) 



1 . Cryptohia congeri from the stomach of the 



conger eel {Conger niger) ( x ca. 1,800). 



2. Cryptohia dahlii from the stomach of 



Cyclopterus lumpiis (x ca. 1,200). 



3. Cryptohia [Trypanoplasma ides) intestinalis 



from stomach of Box hoops ( x ca. 1,800). 



