ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 49 



Annelid Trails.* — C. W. De Yis discusses some Annelid trails on 

 Queensland shales (horizon not stated), and names one, which shows 

 clear impressions of the parapodia, as Nereites berneyi sp. n. 



Polycheeta of Port Erin.j — W. Riddell has added greatly to the list 

 of about thirty species previously recorded for this district. Including 

 the previous work of Harvey Gibson and Hornell, the list now stands at 

 eighty-five species. 



Antarctic Annelids. :[ — Ch. Gravier calls attention to some general 

 features in the Antarctic Annelid fauna, of which about a hundred re- 

 presentatives are now known. Incubation occurs in diverse modes, and 

 in species whose congeners in temperate or warm seas do not incubate. 

 This has been noticed also in Actinians and Holothuroids. Another 

 feature is the gigantism of some species — such as Trypanosyllis gigantea 

 Macintosh, Lictmatonice producta Grube, and FlabeUigera mundata 

 Gravier. Perhaps there is less stiuggle for existence than in warmer 

 waters, and this favours individual development. 



Ciliated Funnel of Nephridia in Earthworm. § — Felix Rosen has 

 studied this in Lumbricus agricola. He desciibes the minute structure 

 of the nephrostome, its peritoneal covering, its lips, and so on. The 

 peritoneum covering the lower lip and the Ijeginning of the c.uial forms 

 a lymphogenic tissue. Leucocytes are formed from cells of this tissue. 

 The equivalent of the ciliated funnel or crown cells of H irudinea is tO' 

 be found in the marginal cells of the upper lip of the funnel in Lum- 

 bricidse. The peritoneum which forms lymph-cells or blood-cells is 

 localized in particular regions of the peritoneal envelope of the nephri- 

 dium in Lumbricidte, whereas in Hirudinea it forms a special organ — 

 the capsule. 



Fresh-water OligochsBta from Graz.|| — H. Pointner deals with 

 thirty-three species and varieties, referable to thirteen genera. The fol- 

 lowing had a large individual representation — Ghsetogaster diastrophus, 

 G. langi, SJavina appendindata, Tuhifex tnhifex, and Lumhriculiis varie- 

 gahis. A new species of Dero (D. Uibicola) is described, with three pairs 

 of large ventral gills, and a more slender palp-like dorsal pair. A new 

 genus Isochseta is established, nearly allied to Limnodrilus. The author- 

 takes a comparative histological survey of the various types. 



Wematohelminthes. 



Chromosomes in Angiostomum nigrovenosum.^— W. Schleep has 

 studied this Nematode which occurs in an hermaphrodite parasitic genera- 

 tion in the frog's lungs, and in a dioecious free generation. The forms 

 of the parasitic generation are in their somatic structure female (" rein 

 weibUch "). Cro.ss-fertilization is excluded. The immature ova have 



* Ann. Queensland Mus., No. 10 (1911) pp. 12-14 (1 fig.), 

 t Trans. Liverpool Biol. Soc, xxv. (1911) pp. 56-66. 

 X Comptes Rendus, clii. (1911) pp. 778-80. 



§ Zeitschr. wiss. Zool., xcviii. (1911) pp. 135-78 (2 pis. and 7 figs.). 

 II Zeitschr. wiss. Zool., xcviii. (1911) pp. 626-76 (2 pis. and 3 figs.). 

 ^ Ber. Natur. Ges. Freiburg, xix. (1911) pp. 1-8. 



Feb. 21st, 1912 E 



