1 2 Verm. 
VERMES. 
Pododrilus, g. n.'for Scenui'is neurosoma, Frey & Leuck. 
Archceoryctes, g. n. for Scenuris hatillifera, Schmankewicz. 
Lumbriculus lacustris, sp. n. 
Archceodrilus cavaticus and maloticus, g. & app. nn. 
L. Orley (Term. Kozl. Pest, xvi. pp. 563-609, 3 pis.) gives a list of 
the terricolous Oligochceta of Hungary, and describes as new : — 
Lumbricus terrestris, var. platyurus] L. terrestris, var. lacteus ; Criodri- 
lus dubiosus. 
Orley (50) describes as new Allolobophora fraissii and mediterranea. 
Pontodrilus marionis, sp. n. ; Perrier (57). 
Titanus forguesi, sp. n. id. (57) p. 217, note. 
Aulastoma heluo ; Templeton, Ann. N. H. (5) viii. pp. 137-139, pi. viii. 
Lithognatha worslei, g. {Eunicidce) & sp. nn., Stewart (60). 
The Recorder has not been able to see the essay of Eisen on Eclipi- 
drilidce and their Anatomy, — a new family of the limicolide Oligochceta, 
Upsala, 1881, 4to, 10 pp. 2 pis. (Zool. Anz. iv. p. 632). 
ENTEROPNEUSTI. 
61. Metschnikoff, E. Ueber die systematische Stellung von Balano- 
glossus. Zool. Anz. iv. pp. 139-143, 153-157. 
The author believes that there is a very close connection between 
Balanoglossus and the Echinodermata ; he proposes to recognise a 
type Ambulacraria, divisible into the Bilateralia and the Radiata ; in 
the former, bilateral symmetry is retained, there are no calcareous 
deposits, and the water-vascular system, which is represented by the 
proboscis sac, develops no radial prolongations. The gills are regarded 
as rudimentary water-vessels, which undergo no further development, 
but present vegetative repetition. The resemblance in details of the 
histological structure of the two groups is insisted upon. 
ORTHONECTIDA. 
62. Metschnikoff, E. Untersuchungen iiber Orthonectiden. Z. wiss. 
Zool. XXXV. pp. 282-303, pi. xv. 
Metschnikoff here describes a species which he found in Nemertes 
lacteus. The Orthonectida generally exhibit a radiate structure ; the 
dermal layer is ciliated and segmented, and there is a well-marked sexual 
dimorphism. Their simplicity of structure is ascribed to degeneration, 
and it is possible that their nearest ally is to be found in the Turbellarian 
DinopUilus. Rabl’s theory that the radial movements of an animal 
within a confined space determine its radiate character is not supported 
by the linear course taken, and the radiate structure exhibited, by the 
forms of this group. 
Metschnikoff ’s paper is translated in Bull. Sci. Nord. iv. pp. 361-371, 
