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UEPORT ON ZOOLOGY, MDCCCXLIV.

five to eight together. To the genus Eumbricus are assignedthe six species : Lumb. agricola, rubellus, anatomicus, riparius,olidus, and agilis, all of which occur in North Germany. ToEnchyt.raus albidus, Henl., to which Lumb. vermicularis,Mull., is said to belong, Hoffmeister has added, besides, theEnch. Galba ; Rhynchelmis limosella and Haplotaxis Menkeanaare interesting on account of their long upper lip. Scenurisvariegata and lineata are said to be identical with Muller’sLumbricus variegatus and lineatus, which the Reporter doubts,because, according to Hoffmeister (Dissert, p. 11), San.variegata inserts itself into the mud, and waggles about withthe projecting caudal extremity, which Lumbr. variegatus,Miill., never does. San. variegata is certainly identical withLumbr. tubifex, at all events, with the worm figured bySchaffer (vid. his Memoir : Die griinen Armpolypen, dieWasserflohe und eine besondere Art kleiner Wasseraale,Taf. iii), which last supposition has also been broached byGrube. (Archiv , 1841, Bd. i, p. 213.) The latter naturalistdescribes a new worm under the name of Lumbricus varie-gatus (ib. p. 198), which is most probably the Lumbr. varie-gatus of Muller. This worm is remarkable by its vascularsystem. The dorsal vessel in it, at each segment, gives offa branch at right angles, which terminates in a digitatemanner in ceecal twigs, as in fact Treviranus had alreadynoticed (Beobachtungen aus der Zootomie und Physiologie,1839, p. 59) in the Lumbricus variegatus of Muller. Gruberecognised a vascular system, in all respects similar, also inEuaxes filirostis, which new genus he characterizes by along, unjointed proboscis and the want of a clitellum. Bockalso (Isis, 1843, p. 287) expresses himself with respect tothe uncertain characters of the species of Earthworm, insti-tuted by Savigny and Duges, and maintains that he hasobserved seven different species of the genus Lumbricus inNorway .

In a marine worm allied to Nais Quatrefages (Comptesrendus, 1844, p. 193 ; or Froriep’s n. Notiz. Nr. 674, p. 215)observed three eyes on the head, and besides these also an eyeon each side of each segment of the body, together with rudi-