vol. 2, pt. 2.1 A TAXONOMIC STUDY OF THE SALPIDAE METCALF. 81 



APSTEINIA MAGALHANICA (Apstein, 1894, b). 



Salpa magalhanica Apstein, 1894, b. 



This species has been studied by Apstein (1894, b) and StreifT (1908). 

 I have had no specimens. Streiff, unfortunately, gives no figures. 

 His descriptions do not fit Apstein's figures, but of course one can 

 not correct Apstein's drawings from a verbal description. I am 

 under the necessity, therefore, of copying Apstein's drawings, in 

 spite of the fact that there is reason to believe them inaccurate in 

 detail. 



APSTEINIA MAGALHANICA, solitary form. 



The body muscles (fig. 62), seven in number, are broader than 

 those of the solitary Apsteinia 



i 



asymmetrica. Muscles I, II, 

 III, and IV approach one an- 

 other dorsally and also ven- 

 trally, but they are not fused. 

 Muscles V and VI Apstein 

 shows in contact dorsally. 

 Muscles IV and V are in con- 

 tact laterally. Streiff says that 

 the first cloacal muscle is fused 

 dorsally with the last body 

 muscle. Apstein interprets 

 both as body muscles. 



The intermediate muscle and 

 the dorsal horizontal bands in 

 front of body muscle I are 

 shown in figure 62. 



From Streiff's description, 

 the oral musculature seems to 

 resemble that of the solitary^ ,„ .„ 



J Fig. 62.— Apsteinia magalhanica, solitary form: A, 



Apsteinia punctata, except dorsal view; b, ventral view, x 4 diameters. 



there are no elongated poste- From Apstein (1906 ' b) - 



rior branches of the oral retractor. The atrial muscles also seem, 



from Streiff's description, to show resemblance to those of Apsteinia 



punctata. 



The gut is described as a compact "nucleus." 



APSTEINIA MAGALHANICA, aggregated form. 



The zooids are strongly asymmetrical (fig. 63), as noted above, 

 There are five body muscles on each side, whose arrangement is 

 shown in the accompanying figures (from Apstein.) The interme- 

 diate muscle is present. It seems to be double. The dorsal hori- 

 zontal band is also found. 



~~st. 



a.o 



