S. multa new. Exactly like exigua, but smaller, 1.10 by .40.964. Northern portion of Fleming Key. Third little island is spectacle-shaped and divided into two parts at the ·narrow point by a water way about fifty feet wide and ten feet deep, through which The tide rushes with great strength. Exceedingly abundant t, in fact, aside from Longidens copium of Cayman Brae, I have never seen a. species of this family so abundant