412 



W. G. Van Name — Bermuda Ascidians. 



ABBEEVIATIONS. 



[For explanation of any other abbreviations, see description of figure.] 



at atrial aperture. 



br branchial aperttire. 



d. 1. -- dorsal lamina. 



d. Ig dorsal languet. 



d. t dorsal tubercle. 



em - embryo. 



en endostyle. 



fd. fold. 



g -ganglion. 



g. c gastric coecum. 



h _. heart. 



h. g .hepatic gland. 



in. intestine. 



i. 1. b internal long. bar. 



Ig languet. 



Iv. larva. 



m. a muscular appendage. 



m. b muscle band. 



od oviduct. 



oe. oesophagus. 



ov. ovary. 



p. papilla. 



p. c pigment cell. 



pep polycarp. 



p. s pigment sjjot. 



r rectum. 



rep reproductive glands. 



sg stigma. 



st. stomach. 



t. testes. 



tn tentacle. 



tr. V. transverse vessel. 



ty. .typhlosole. 



V. ap .vascular appendage. 



V. d.. vas deferens. 



