1881.] Zoology. 137 
closed protuberances, a larger, less pointed one, opposite the cir- 
rus, corresponding with the valvule, and a smaller one a little 
above the middle of the sac where the muscle mis inserted. The 
internal female organs were but poorly represented, consisting 
of a somewhat triangular “ oviduct,” with its two elongate ter- 
mini closed and suspended by three principal muscles. The latter 
: = ae t* 
F] j-~-. Ob 
Fic. 1.—Hermaphroditic form of Zbranchipus vernalis V. The first three pest- 
siulieviont lsegments, A, heart; 24, ostium of heart; 2, intestine; a oe ffs on 
dilated part of test.; 23, contr. part or vas. def.; “, "ad dilat. part or sem. ves. ; a, 
duct ejac, ; g, pandalbe and access. app.; ¢, cirrus; III, 3d pestabd nel IV, ” qth 
post-abd. segt.; ov, ovarial twisted string; od, oviduct, ovum-egg; c.g. cement- 
glands ; m! m? m3, muscles of the oviduct. 
anastomosed with the generally intricate mass of muscles. (The 
latter is omitted in Fig. 1.) Muscle m!, of Fig. 1, was inserted 
near the larger, outer protuberance broadly spreading over the 
anterior terminus of the oviduct, the muscle (7°) below the 
posterior terminus of the oviduct, and sa (m*) was inserted 
in the second smaller, outer protuberan 
This outer pr otuberance was cobewntly ‘contracting and expand- 
ing itself, the area of the motion was exteriorly confined to this 
small protuberance only. The rhythmic contraction of the three 
Principal fascicles revolved the “ oviduct” : about one-fifth of 
its shorter diameter, in a semi-lateral directio 
There was no dissepiment between the sore and female sac, 
and the interior uterine second sac was entirely absent in the 
female half. : 
The ovarial string passed up from the post-abdomen behind the 
VOL. XV.—No, II, x0 
