in 



CLASSIFICATION OF CESTODA 



91 



a. A transverse uterus in middle part of median field ; head 2 mm. 

 diameter .... S. centripunctata Riv. 



b. Two lateral uteri in each segment ; head less than 1 mm. in 

 diameter . . . S. globipundata Riv. 



III. Scolex almost invariably provided with hooks ; genital pores on left 

 border of segment ; eggs with three shells but no cornua. Segments 

 broader than long ; posterior angles salient. Hymexolepis Weinl. 



a. Scolex with a single series of 24-30 hooks, each 14-1 8/x long 



H. nana v. Sieb. H. murina Duj. 



b. Scolex very small, unarmed . . H. diminuta Rud. 



IV. Scolex provided with two elongated muscular pits. Body segmented ; 

 three genital apertures in middle of ventral surface 



BOTHRIOCEPHALUS Rlld. 



Body 2-20 metres in length . B. latus Brems. B. crista t us Dav. 



(doubtful species). B. cordatus Leuck. B. mansoni Cobb. 



( = B. liguloides Leuck.) 



Classification of Cestodes. The following classification, 

 which, so far as the Taeniidae are concerned, follows that 

 employed by Eailliet, Blanchard, and most recent writers, in- 

 cludes only a few representative genera : 



1. Fam. Cestodariidae Mont, (Moxozoa Lang). 



Gen. Caryophyllaeus, Archigetes, Gyrocotyle, Amphilina. 



2. Fam. Bothriocephalidae. 



Sub-Fam. 1. Bothriocephalinae. Gen. Bothriocej)lialus, Schistocephalus, 



Triaenophorus ( = Tricuspidaria). 

 Sub-Fam. 2. Ligulinae. Gen. Ligula. 



Sub-Fam. 3. Solenophorinae. Gen. Solenophorus, Duthiersia. 

 Sub-Fam. 4. Diphyllinae. Gen. Echinobothrium, 



3. Fam. Tetrarhtnchidae. 



Gen. Tetrarhynchus. 



4. Fam. Tetraphyllidae. 

 Sub-Fam. 1. Phyllobothrinae. 



etc. 

 Sub-Fam. 2. Phyllacanthinae. 

 etc. 



5. Fam. Taeniidae. 



Sub-Fam. 1. Cystotaeninae. Gen. Taenia s. str. 



Sub-Fam. 2. Anoplocephalinae. Gen. Moniezia, Thysanosoma, Stilesia, 



Anoplocephala. 

 Sub-Fam. 3. Cystoidotaeninae. Gen. Dipylidinm, Hymenolepit, Drep- 



anidotaenia, Dicranotaenia, Echinocotyle, Davainea. 

 Sub-Fam. 4. Mesocestoidinae. Gen. Mesocestoides, Dithyridiurn. 

 Sub-Fam. 5. Ichthyotaeninae. Gen. Ichthyotaenia, Corallobothrium, 



Gen. Phyllobothrium, Echeneibothrium, 

 Gen. Calliobothrium, Anthobothrium, 



