Note 1693 — LETTER XXXV.
Reading edition
A remarkable instance of analogy is afforded by this genus. In Erotylus there are two groups; one distinguished by gibbous elytra, and the other by flatter ones. The same distinction is observable in Spheniscus; for to this genus belongs Helops fasciatus Oliv., which represents the flat Erotylí, and even individually Erotylus trifasciatus Oliv., E. fasciatus F.