On Three Monostiliferous Hoplonemerteans from the San Juan Archipelago, Washington State, USA

Abstract

The present paper deals with three species of monostiliferous hoplonemerteans collected in the San Juan Archipelago, Washington state, USA in 1964. Two were originally described as Amphiporus formidabilis Griffin, 1898 and A. imparispinosus Griffin, 1898; the third was originally described as Amphiporus punctatulus Coe, 1905, later became the type species of the genus Nipponnemertes (Crandall, 2001). Specimens were fixed in Bouin's solution after anesthetized by addition of menthol or 70 % alcohol. Two specimens of both Amphiporus species and two specimens of N. punctatula were sectioned at 8 μm and stained with Delafield's hematoxylin and eosin. A Sony video camera with Symphonic monitor television and Sony color video printer, in addition to an Olympus BH-2 microscope, were used for observation of the material.