MORPHOLOGY AND TAXONOMY OF THE INFUSORIA 4.97 



Family 7. Biitschliidae Poche 1913. 



5. Entire body ciliated 6 



Parts of body naked 7 



6. Body drawn out into long neck, covered 



with, coarse, long cilia Genus Ampallacula Hsiung 



Body ovoid, cytostome large and sur- 

 rounded by longer cilia Genus Butschlia Schuberg 



7. Cilia over less than half the body 8 



Cilia over all body except posterior end; a 



few anal cilia present Genus Blepharosphaera Bundle 



8. Body cilia divided into two zones 9 



Body cilia divided into 3 zones by 2 trans- 

 verse naked bands Genus Alloiozona Hsiung 



9. Anterior end drawn into long neck-like 



process 10 



Anterior end blunt or only slightly elevated 1 1 



10. Macronucleus disk-shaped Genus Polymorphs Dogiel 



Macronucleus sausage-shaped Genus Blepharoprosthium Bundle 



11. Cystostome large at end of short elevation . 12 

 Cytostome small ; no elevation ; cilia about 



cytostome and cytopyge Genus Bundleia 



Cunha and Manix 



12. Cytostome accompanied by supporting 



rods Genus Blepharoconus ( rassowsky 



No rod-like structures in gullet .... Genus Didesmis Fiorentini 



Sub-order 2. Pleurostomina (Tribe Pleurostomata Schewiakoff; 



Kahl). 



Family 1. Amphileptidae Butschli; Schoutedon. 



1. Normally ciliated on both surfaces of body . 2 

 Normally ciliated only on right side of body 3 



2. Oral slit does not reach to middle of body; 



no line of trichocysts Genus Amphileptus Ehr. 



em. Butschli 

 Entire ventral surface surrounded by tri- 

 chocyst-bearing zone Genus Bryophyllum Kahl 



3. Ventral surface with flat trichocyst zone; 



dorsal same or with trichocyst warts 



(Fig. 203) Genus Loxophyllum (Dujardin) 



Wrzesniowsky 

 Trichocyst-bearing zones absent 4 



4. Left side entirely without cilia Genus Lionotus Wrzesniowsky 



Ciliated right side drawn over the dorsal 



line to the left side so that almost half of 

 the left side is thereby ciliated . . . .Genus Acinerla (Dujardin) 



Maupas 

 Family 2. Tracheliidae Ehr. 1838. 



1. Anterior end drawn out into a snout or a 



finger-like process; free-living 2 



Ectoparasites on amphipods; anterior body 



process lancet-like Genus Branchioecetes Kahl 



2. With finger-like anterior proboscis; poste- 



rior end tail-like (Fig. 194) Genus Dileptus Dujardin 



Form oval or round; posterior rounded or 



with barely evident point Genus Trachelitis Schrank 



Family 3. Loxodidae Roux. 



One genus only (Fig. 203) Genus Loxodes Ehr. 



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