MOLGULA MANHATTENSIS 



257 



c.d_. 



QOV^OlSC. 



FIG. 50. Morpholigic type of a Urochord from'Y. Delage and Herouard, 

 Zoologie Concrete, an, anus; b, orifice of the oesophagus; C, heart; cd, duct 

 of the neural gland; d, cloaca; E, endostyle; gi, lower groove; gl, neural gland; 

 glp, pyloric gland; Gn, nervous ganglion; Id, dorsal notches; n, dorsal nervous 

 trunk; ov, ovary; oov, orifice of the ovary; olsc, orifice of the testis; pr, peri- 

 pharyngeal groove; s, buccal siphon; st, stomach; tsc, testis; tt, buccal 

 tentacles; tv, vibratile tubercle; vl, longitudinal sinus; vt, transverse sinus. 



