DARCY W. THOMPSON ON THE ORTHAGORISCUS MOLA L. 
III. It agrees with the four genera above mentioned, and differs from other 
Teleostei in the absence of a macula neglecta. 
IV. The general proportions of the labyrinth are unusual, the semicircular 
canals being disproportionately long, and the vestibule very small. 
V. Orthagoriscus is also exceptional among Teleosteans m lacking the 
usual solid otoliths, and in possessing instead numerous small otoconia, 
compacted together, but still distinct even to the naked eye, as in 
Elasmobranchs. 
