nnipliiltiaiis. the laitM* stntros hocoinc siirroiiinlcd witli ;i C.iirlv 

 lliicU iiUe^ninicnl. 



T. nKtcrosfniiKi was rouml in all the sju'cinn'iis of Ilodotpr- 

 mes examined l>y me. 



III. Gigantomoiias lierciilea n. gen. n. sp. 



This form, as the piv'redini;' is found in the intrstinc (d" 

 Ilodotermes niossaiHhiciis lla^\ It niusf he separated into a 

 distinct ix^niis, althoii«»-h it shows a resenihlance uith TnClio- 

 moiias. Ir is like a Trichomonas grown to a g-ig-aiitic size. 

 Indeed, GiijaMomnnas reaches (measured from the anterior 

 end of the body to the end of the axostyle) 60 -7.'> ;j. in 

 length, with ao— a.") ii in widih. Whereas the largest of Tricho- 

 monads known, Trichomonas augnsta Alexeieff may attain 

 the maximum of 28 u in length ami isu in width, according 

 to Kuc i nsky (26). 



The general aspect of the animal (t. f, fig.9 and 10) resem- 

 bles Tricho}no)ias. The shape of the body is. ovoid, becoming 

 sharper towards the posterior end where it is continued into 

 a long, straight needle (the free end of the axostyle). 



Slightly l)ehind the anterior end of the bodv, on its ventral 

 side ^j, the organs of locomotion of the animal arise. It pos- 

 sesses 4 free flagella, one of which is considerably longer 

 and thicker than the rest. The point from which the flagella 

 arise is often discernable as a small tubercle. 



At the base of the flagella is the commencement of the 

 undulating membrane as well. It very soon pa.sses to the 

 dorsal side of the body, running backwards, turning spirally 

 to the right, and again returning to the ventral side of the 

 body at the base of the caudal needle. It is remarkable that 

 the meniljrane does not project above the surface of the 

 body, but in all its extent lie;^ at the bottom of a special 

 fuiTow set into the body-wall. This furrow, my drawing of 

 which is not quite satisfactory, is best seen on fig. 9, table 

 I. The highest part of the membrane is its middle, whereas 

 it gradually becomes lower at the extremities. The membrane 

 of Giyautomonas is very nuassive and. Judging from the dif- 



1) The orientation of tii»^ body of G/>yrn;/o»JO»r/.s( correspomis with lio- 

 be 1 i's orientation for Tiichomonail-;: thf side of tho body on wliich th.- undu- 

 lating membrane passes is termed dorsal, its opposite -ventral. 



