21.
T. vesparioides*, Annandale (1908).
Genus 7. Corvospongilla, nov.
22.
C. burmanica* (Kirkpatrick) (1908).
23.
C. lapidosa* (Annandale) (1908).
Order HALICHONDRINA.
Siliceous monaxon sponges in which the horny skeleton is much reduced or absent and the spicular skeleton is more or less definitely reticulate. The microscleres are usually rod-like and rarely have more than one main axis.