PACIFIC TUNICATA OF U.S. NATIONAL MUSEUM 



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Figure 93. — Microcosmus exasperatus Heller: Specimens from Amoy: a, left side of 15 

 mm. specimen (USNM 11523); b, right side of 40 mm. specimen (USNM 11524); c, right 

 side of 13 mm. specimen (USNM 11526); J, left side of 24 mm. specimen (USNM 11527); 

 e, right side of 32 mm. specimen (USNM 11525);/, left side of 25 mm. specimen (USNM 

 11704). 



moderate thickness in more or less contracted specimens, although thin 

 in rather expanded specimens; pale yellowish brown oi- i)ale reddisli 

 brown. Longitudinal and transverse muscles very remarkable, cross- 

 ing each other very regularly. The atrial velum bears a number of 

 fine finger-shaped tentacles along inner basal portion. 



