Pacific Salpidae- — YoUNT 
307 
scribed by Apstein (1904) from Amboina. 
In 1906, Ritter described what he regarded as 
a new species, Cyclosalpa retracta { = R. retracta ) . 
This, however, was regarded by Ihle (I9IO) 
as similar enough to K. picteti to be a doubtful 
species if an intermediate form were found. 
Komai (1932) described such an intermediate 
form, so that at present R. retracta is consid- 
ered a synonym of R. picteti. 
Ritteriella amboinensis (Apstein) 1904 
Fig. 18^-c 
Salpa amboinensis Apstein 1904: 651; 1906^ 
(agg.): 166; Ihle, I9IO: 34; 1912: 44. 
Salpa (Ritteria) amboinensis Metcalf, I9I8: 56; 
Sewell, 1926: 85. 
Ritteriella amboinensis Ihle, 1935: 527-529; 
Tokioka, 1937: 222; Thompson, 1948: 126. 
Fig. 18 . Ritteriella amboinensis. a. Solitary form, dorsolateral aspect; b, aggregate form, dorsal aspect; r, aggregate 
form, mouth musculature of right side from inside. 
