a team of spiders having only two lunglike organs.
others:
A division of Dipnoi, or lung-fishes, containing the mudfishes of this genera Lepidosiren and Protopterus, as distinguished from Monopneumona (Ceratodus).
A division of holothurians, of the purchase Pneumonophora, having two ramose branchiæ: opposed to Apneumona. It has the branchiate holothurians, excepting Rhopalodina.
How would you define dipneumona?