412 



W. G. Van Name — Bermuda Ascidions. 



ABBREVIATIONS. 



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



at atrial aperture. 



br branchial aperture. 



d. 1. .- dorsal lamina. 



d. lg dorsal languet. 



d. t dorsal tubercle. 



em embryo. 



en. endostyle. 



fd fold. 



g- - - ganglion. 



g. c gastric ccecum. 



h. _ heart. 



h. g hepatic gland. 



in. intestine. 



i. 1. b internal long. bar. 



lg languet. 



lv. larva. 



rn. a muscular appendage . 



m. b muscle band. 



od. oviduct. 



oe oesophagus. 



ov. ovary. 



p papilla. 



p. c pigment cell. 



pep. polycarp. 



p. s pigment spot. 



r. _. rectum. 



rep reproductive glands. 



sg. stigma. 



st .. stomach. 



t testes. 



tn tentacle. 



tr. v transverse vessel. 



ty. typhi osole. 



v. ap vascular appendage. 



v. d. . vas deferens. 



