(syn. Electron Ϯ Broad-billed Motmot E. platyrhynchum) L. crypticus covered, concealed < Gr. κρυπτικος kruptikos obscuring < κρυπτος kruptos hidden; "CRYPTICUS, Sw.* General structure of Prionites; but the bill excessicvely broad, flattened, and dilated at the base. Culmen arched, grooved in the middle; the cutting margins minutely and regularly serrated. C. platyrynchus. Ill. of Orn. iii. pl. 106. ... *It is by this form, as I suspect, uniting to Lamprotila, that the circles of the Halcyonidæ and the Trogonidæ are connected" (Swainson 1837).