246 
On an Earthworm from Ecuador. 
8. Male pores xix./xx. 
4. 
~l 
ie 
Fig. 1. 
Fig, 2. 
‘There are three pairs of “ lateral hearts 
The distance between the two couples of chete of one 
side is greater than that between the right and left 
ventral couples. There are no copulatory cheetee. 
The cheetee commence on somite il. 
The first nephridium opens into the buccal cavity. 
The gizzard les in somite vil.; there are seven pairs of 
Ptee nal diverticula. 
” and two pairs 
of ‘‘ intestinal hearts.”’ 
« 
The two pairs of sperm-sacs are not confined to the 
somites in which the testes lie; there are four pairs of 
globular spermathece in somites Vieg Viey Willy. VALLI 
EXPLANATION OF PLATE X. 
Ventral surface of the anterior end of Rhinodrilus ecuadoriensis. 
neph.p.”, pore of second nephridium; Pro., prostomium repre- 
sented in a protruded condition; spth., spermathecal pores; 
tub., tubercula pubertatis ; ¢, male pore. 
Semi- diagrammatic view of a longitudinal section, derived from 
a study “of a dissection, The left side of the animal and the left 
sperm-sacs are removed; the organs of the left side only are 
shown with the exception of the. sperm-sacs, those of the right 
side being seen. The septa and blood-v essels are omitted for 
clearness’ sake, and only the anterior nephridia ar are represented. 
¢ indicates the pore of the left sperm-ducts ; ce7., the cerebral 
ganglia; com., the circumpharyngeal nerve- commissure ; div. 
the fourth intestinal diy erticulum ; fe ie , the subpharyngeal 
ganglion; giz., the gizzard; m., mouth ; ,n.°, the second and 
fifth nephridia ; n.c., ventral nerve- aoe rn. 0. , nephridiopore ; 
nt., convoluted tube of a nephridium ; n't. convoluted tube 
of the “pyeptonephridium ;” p.n.d., the duct of the pepto- 
nephridium, dissected out and entering the buccal cavity ; pro., 
prostomium, partially retracted; 7.m., radiating muscles of 
pharynx; sal., “ salivary glands” around the pharynx ; sp.d., 
sperm-duct ; sp.s.', SPs. 5 the anterior and posterior sperm-sacs 
of the right ‘side ; spth.'-4, the four spermathecee ; ¢.s., “ testi- 
cular sacs,” enclosing testes and rosettes. 
Fig. 3. Dorsal view of the tubular region of the intestine, with the seven 
pairs of “diverticula” (div.', div.*, div.) and the vascular system 
of the region. D.v., dorsal blood- eats ; 2.h., the two pairs of 
intestinal hearts (from the aes -intestinal vessel) ; /.4., the 
three pairs of lateral hearts; s.2, sacculated intestine; ¢.2., 
tubular intestine. 
Fig. 4. The peptonephridium removed entire from the body. pn.d., the 
duct ; pv.f., the funnel ; pz.t., outline of the mass of convoluted 
Rapes: the conv Glencoe are very complicated, and the whole 
is covered by a dense network of plood-vessels, both of which 
are omitted, though a small portion of the tubule is shown 
Mb fhe 
