1 (3 Verm. 
YEUMES. 
cingulum extends only over the ventral third of about three rings. M. 
australis, sp. n., may extend to six feet in length, Gippsland. 
Terehella lewisiana (Mantell) ; Davies, Geol. Mag. (n.s.) vi. p. 145. 
Anatomy, &c. 
Fraisse (42) describes the sperm atophores of Lumhricus agricola as 
being from one and a half to two millimetres in length, and attached from 
the twenty- third to the twenty-seventh segments of the worm. The same 
structures in L. communis, L. riparius, and L. olidus are also described. 
Soft just after copulation, they gradually harden on exposure to the 
air. 
Whitman gives, P. Am. Ass. 1878 (1879), pp.^ 263-270, an account of 
the changes in the eggs of Clepsine, which precede the cleavage-period. 
Vejdovsky (59), in a note, forms the family of Amedullata for the genus 
AEolosoma {AE. ehrenbergi, quaternarium, and tenehrarum, spp. nn.) ; 
the ventral cord is in them completely absent. A. tanebrarum has a 
primitive rudiment of the ventral cord in the form of a very indistinct 
ectodermal thickening in the median ventral line ; the cerebrum is in the 
form of two ganglia, and is connected with the ectoderm. 
The same author (58) proposes to form the family Discodrilida for 
the reception of Branchiobdella, it is most nearly allied to the ChaUo- 
gastridic. Ho points out that the characters of the “ dissopimental 
glands’’ in the Enchytrwuloi^lQ'ddi to their being regarded as secreting 
organs. True sympathetic nerves are to be seen in Anachoita, and the 
gustatory organs of this genus are the homologues of the “ jaws ” in the 
buccal cavity of Branchiobdella. 
Vejdovsky (57) gives, p. 49, a summary of the chief results to which 
he has been led ; of these, some of the most important are 
(1) The discovery that the structures lying in the 4-7 segments, which 
were looked upon by Ratzel as ganglionic bodies belonging to the oesopha- 
geal nervous system, are merely special septal glands, which have no con- 
nection with the oesophageal commissures. 
(2) The demonstration of the presence of the cephalic pore in every 
species of the Enchytriddw ; by this some of the spermatozoa escape to 
the exterior. 
(3) The setae are developed in the hypodermis, or their place is taken 
by modified unicellular glands. 
(4) In the central line of the ventral surface the ectoderm becomes 
thickened, and the ventral nerve-cord is developed ; along this so-called 
ventral line there is a break in the muscular layer ; the transverse muscles 
are inserted into the neurilemma of the ventral cord. 
(5) A bulb is developed in the oesophagus, by the thickening of its 
endoderm. 
(6) In the more posterior portions of the body the dorsal blood-vessel 
is converted into a blood-sinus, which is enclosed in the walls of the 
enteron. 
(7) There are no blood corpuscles. 
(8) The excretory organs are different externally from those of all 
