420 
vj:rme3. 
genua Saccohdella, which lives attached to the branchial feet of Nebalia 
straussi in the gulf of Marseilles. 
Trochosphcet'a, g. n., Semper (6). A very remarkable form, spherical, apodal, 
free, pellucid, revolving, circumscribed by a median ciliated band, dividing its 
surface in two equal hemispheres one aboral (almost devoid of all organs, 
answering to the front in Floscularia) j the other oral, in which all interior 
organa are situated. The ciliated mouth lies close below the ciliated band ; 
the pharynx (armed with jaws), oesophagus (with whiqh a salivary gland 
communicates on either side), stomach, rectum, cloaca, and anus are demon- 
strated j in the cloaca two secretory organs (? kidneys) and an oviduct also 
open. Muscles are only developed in a few places. A nerve-ganglion close 
above the pharynx supplies two eyes and three symmetrically disposed organs 
of sense (?) with nerves. As eggs and embryos were observed, but neither 
males nor spermatozoa, the author presumes that he only met with the 
parthenogenetic generation. T. (equatorialis, in ditches between rice-fields, 
Zamboanga. 
II. CHJ5TOPODA. 
1. Allman, E. J. Oh the structure and development of Miiraria, 
Q. J. Micr. Sci. xii. p. 392. 
2. Eisen, G. Om nagra Arktiska Oligocliaeter. CEfv. Ak. Edrh. 
1872, No. 1, pp. 119-124, pi. 2. 
3. Grube, E. Mittlieilungen iiber St. Vaast-la-Hougue und 
seine Meeres- besonders seine Annelidenfauna. Abh. schles. 
Ges. 1868-1869, pp. 91-128, pi. 2. 
4. Mittlieilungen iiber St. Malo und RoscoflT, und die 
dortige Meeres- besonders die Annelidenfauna. Ibid. 1869- 
72, pp. 75-146, pis. 1 & 2. 
5. . Ueber neue Arten der Gattung Sabella. Ueber die 
Amphicteneen und Ampliareteen, Mgr. Ueber zwei neue 
Heteronereis- Form en und Pycnogoniden. JB. schles. 
Ges. 1870, pp. 67-86. 
6. . Ueber die Gattung Lycastis, und ein Paar neue Arten 
derselbeuj z. kritischen Uebersicht der bisher beschrie- 
benen Terebellen und fiber T, anguicomus und einige Serpu- 
laceen; Vorlage einer Lumbriconereis gigantea, Q., einer 
neuen (Enonej &c. Ibid. 1871, pp. 47-58. 
7. Lespes, C. Etudes anatomiques sur un Chaetoptere. Ann. 
Se. Nat. (5) xv. no. 14, pi. 4. 
8. Marion, M. A. F. Sur les organes reproducteurs de VOria 
armaiidi, Cl. C. R. Ixxiv. pp. 1254-1256. 
9. McIntosh, W. C. On the abyssal theory of light, the pro- 
tozoie absorption- theory, and the azoic-mud theory, pro- 
pounded in the Reports of H.M.S. ^ Porcupine,^ 1869-70. 
Ann. N. H. (4) ix. pp. 1-12. 
