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Show 1895.1 ME. E. E. BEDDABD ON NEW EAETHWORMS. 229 A considerable number of specimens were collected in a garden in Valparaiso. They vary greatly in size, some being mature and others not so. m The biggest specimen is 84 m m . in length by 5 m m . in diameter. The number of segments of this individual was 117. The colour of the living worm is described by Michaelsen in the following terms : " schmutzig grau ; vorne schmutzig fleischfarbe ; Giirtel weiss bis braunlich." The preserved worms are of much the same colour. During life the worm was remarkable as " lebhaft schlangelnd bei Beriihrung." The setae are strictly paired. Dorsal pores are present. The clitellum occupies segments xiii.-xvii. There is a median genital papilla upon segment xvi.; the male pores are on xvii. ' The prostomium, as in so many species of the genus, is completely carried over the buccal segment by grooves. The first setigerous segment has in most specimens a furrow on the dorsal surface which extends right across that surface, but is not visible ventrally. This gives a little the impression that the prostomium is an incomplete one. The gizzard is large; it lies in segment vi. It is immediately followed by a thin and delicate septum, behind which are five septa, moderately thick. The last heart is in the twelfth segment. The sperm-sacs are in the ixth and xith segments; those of the latter segment are so coarsely racemose that they appear to be formed of a number of small separate sperm-sacs ; this does not apply to the anterior pair. The spermiducal glands are different from those of any other Microscolex which I examined in their regular tubular form and in the complex coiling; they look much more like the corresponding glands of certain Acanthodrilidae. Moreover, the duct of the gland is unusually conspicuous ; it is also long and is not more than one-third of the diameter of the gland. It has a distinctly nacreous glitter. In common with the spermiducal glands opens on each side of the body a sac of penial setae; there are two of these on each side. They are very yellow in colour and have a bent bowlike form. The extremity is only moderately pointed and a little flattened and expanded. Fine spinelets ornament the extremity. The spermathecae in segment ix. are particularly large. The racemose diverticulum is borne at the end of a long muscular stalk. Hab. St. 12, Valparaiso, in garden ; St. 6, Quilipue; St. 22, Coronil; and St. 25, Valdivia, San Jose.1 (2) Microscolex longiseta, n. sp. This is a small, rather transparent species, with little or no trace of integumental pigment. 1 From each of the last two stations a single individual probably of this species, |
