614 
ZOOLOGICAL LITERATURE. 
PARAMECOCOTYLEA. 
Tribe A. Paramecocotylea apbocta. 
Subtribe I. Atrypanorhyncha. 
Earn. 1. Monohothria. 
Caryophyllieus, JMouobotbrium, Diporus. 
Earn. 2. Dibothria. 
Ligula, Schiatocepbalus; Dibothriuui, Ecbinobothrium, Trifipiiopho- 
rus, Amphicotyle. 
Earn. 3. Tetrahothria. 
Tetrabotbrium^ Antbobothrium, Ampboterocotyle, Polyoncbobojtb- 
rium, Tetracampos, CylindropboruS; Prostbecobotbriiim, Ecbenei- 
botbrium, Oncbobotbrium, Pbyllobotbrium, Monorygnia^ Orygma- 
tobotbrium, Marsypocepbalus^ Callipbotbrium. 
Earn. 4. Octobothrm. 
Octobotbrium. 
Earn. 6. Monosolenobothria. 
Disympbytobotbrium. 
Earn. 6. Disolenobothria. 
Solenopborus. 
Earn. 7. Zygobothria. 
Zygobotbrium. 
Subtribe II. Trypanorhynciia. 
Earn. 8 . Dibothriorhyncha. 
Rbyucbobotbrium. 
Earn. 9. Tetrabothryorhyncha. 
Tetrarbyncbobotbri uiri, Syndesmobotbrium. 
Tribe B. Paramecocotylea proctucha. 
Earn. 10. Hypobothria. 
Pentastomum. 
It is hardly probable that Diesing's method will gain general 
acceptance ; nevertheless, in justice to the author, Ave offer this 
bird's-eye view of his classification. Any analysis of the new 
genera here put forth is quite out of the question. It is worthy 
of remark, however, that in the ^Systema' our author gave 
32 genera for the entire group (Cephalocotylea), whereas he now 
adduces 36 genera, of which the Cyclocotylea embrace only five. 
One or two marked improvements have also been introduced, such 
as the suppression of the genera Echinococcus, Cysticercus, Coe- 
nurus, Piestocystis, and Scolex. These, of course, are larval forms 
which, as far as possible, he has wisely sought to allocate with 
their respective adult representatives. The author has also 
judiciously recognized the juvenile character of the so-called 
Pentastoma denticulatunij and has placed it in its appropriate re- 
lation to P. tcEnioides, describing, at the same time, 19 species as 
belonging to this genus. Leuckart, it may be remembered, gave 
