(510 
ZOOLOGICAL LITERATURE. 
the 1st single, the 2nd and 3rd forming a knot, 2-7 single j vagina alone with 
long muscles. 
19. (Schn.). 2 symmetrical spicula ; bursa always present, sur- 
romiding the extremity of the tail ; 4 or 5 preanal papillae. 
20. Leptodera (Duj.). 2 symmetrical spicula j bursa wanting or not sur- 
rounding the extremity of the tail j 8 preanal papilla). 
III. Either no muscles, or when present running in a longitudinal direc- 
tion. 
21. Anguillida. Lateral bundles (Seitenfelder) ; a main median line j 2 
S)'^mmetrical spicula ; bursa broadened anteriorly, with a rounded edge, pos- 
teriorly obtuse. 
22. Trichina (Ow.). Lateral bundles j main median line j no spiculum j 
bursa with a double knot. 
23. Trichosoma (R.). Lateral bundles and main median line (secondary ?) ; 
a spiculum j slieath of the spiculum closed with a lid ; bursa. 
24. Triclioccphalus (Gdze). No lateral bundles; main mediarf line; a 
spiculum ; sheath of the spiculum closed with a lid ; no bursa. 
25. Pseudaliiis (Duj.). Lateral bundles ; all main and partially also secon- 
dary median lines ; 2 symmetrical spicula ; bursa twice forked, spoon-shaped, 
or wanting ; several papillae. 
26. Ichihyonema (Dies.). Lateral bundles ; main median line; no anus; 2 
unsymmetrical spicula ; tail-end of truncate. 
27. Mermis Lateral bundles; main median line, secondary back- 
lines ; no anus ; 2 symmetrical spicula ; bursa widened ; 3 or 4 rows of papillae 
before and behind the anus. 
28. Gordius (M.). No lateral bundles ; no ventral line ; no anus ; no 
mouth (?) ; no spicula ; bursa twice forked, 
Balanoylossus. Kowalewsky (1. c.) gives an account of the anatomy of 
this strange worm. The genus would appear to have been founded by Delle 
Chiaje, and has been latterly quite overlooked. Chiaje’s species B. clavi- 
gerus is, according to the author, not very common in the Bay of Naples ; 
but a new and smaller species enabled him to work out its anatomy in great 
detail. The vascular system was made out by placing the animal for a short 
time in a strong solution of carmine. — Mecznikow (/. c.) describes a larval 
form taken near Naples in 1865, and regarded by him as belonging to this 
genus. A figure of the form found.is given, and the author thinks the genus 
had perliaps Ijetter be placed by itself as representative of a small section of 
the Annelids. 
The following species are noticed by Kbabbe (Rech. Helminth. &c.) as 
occurring in the intestines of the dog and cat at Copcnliagcn and Iceland : — 
Ascaris marginaia (Rud.), pp. 14 & 39 ; A. mystax (Rud.), pp. 20 & 40 ; and 
Dochmius trigonocephalus (Duj.), p. 14. 
Gbeefp mentions finding at Bonn in salt springs Anguilhdidce having eyes, 
but in other respects having close affinities to common freshwater species, 
and promises further details. Sitzungsber. d. nat. Ver. Breuss. Rheinl. und 
Westph. June 1865, p. 87. 
Spiroptera sanguinolenta (Rud.). Czernay gives an account of both sexes 
of this worm, Avhich is met with very commonly in dogs’ stomachs in Char- 
kow. Bull. Soc. Imp. Moscou, tome xxxviii. no. 3, 1865, p. 62, pi. 3. 
OoLLAS notes the occurrence of a number of Entozoa {Pseudaliiis Jilum, 
