Reproductive Data for Hastula inconstans

egg diameter	100 um
reproductive season	May, June and July
development	veligers hatch when 1 whorl is complete, add 2 to 2 1/2 additional whorls while planktonic, settle out when they are 650-850 um in length and have completed 3 to 3 1/2 whorls
occurrence	plankton in Kaneohe Bay Sampan Channel
references	J.B. Taylor in Planktonic Prosobranch Veligers of Kaneohe Bay, 1975

Phylogenetic Information

phylum	Mollusca
class	Gastropoda (subclass Prosobranchia)
order	Neogastropoda
family	Terebridae
genus	Hastula
species	inconstans
reproduction method	sexual