38 U)iiversity of California Publications in Zoology. [Vol. b 



the San Diego specimens of *S'. lijra to Ritter-Zahony for cor- 

 roborative identification and I take the liberty to quote his 

 reply. He says: "Sie haben sie ganz riehtig als S. lyra bes- 

 timmt, es kann dariiber gar kein Zweifel sein." I am there- 

 fore quite positive that my specimens are referable to S. lyra 

 and if so I can detect no appreciable difference between them 

 and S. gigantea or 8". maxima. It is possible that I may have 

 obtained both S. lyra and *S. maxima and confused them, but 

 such an error is improbable. 



8. lyra also bears a striking resemblance to iS'. gazelle. In 

 regard to the latter species Ritter-Zahony (1909c, p. 788) says: 

 "Durch die Gestalt der Vestibularorgane und die ausserordent- 

 liche relative Kiirze des ScJiiranzahscJniittes [italics mine] ist 

 diese Art so gut gekennzeichnet dass die Identifizierung spater- 

 hin mit Sicherheit moglich sein wird." Nevertheless this species 

 bears a striking resemblance to our specimens of S. lyra. While 

 in 8. gazelle Ritter-Zahony (1909c) records the tail per cent as 

 10 to 14, with one possible instance of 19, the San Diego 8. lyra 

 shows a variation as low as 15.6 per cent, a difference of only 

 1.6 per cent from his measurements of aS. gazelle. From his 

 tabulation for yS. lyra (1908, p. 12) in specimens of 27 mm. in 

 length he records 4 mm. as the tail length, which amounts to 

 14.8 per cent, but he describes the tail as 17 to 23 per cent. 

 From his tabulations it frequently falls below 16 per cent, which 

 means that there is an error somewhere in his data. Surely the 

 difference between 8. lyra and 8. gazelle in this matter of the 

 length of tail is not great. The vestibular ridge, again, is 

 amazingly similar to that of tS*. lyra, and the nature of the 

 posterior teeth in /S. gazelle that Ritter-Zahony (1909c, p. 

 788) describes as "aneinanderschliessend (d.h. nicht durch 

 Zwischenraume getrennt wie bei manchen Arten) " is essentially 

 the same in San Diego specimens of 8. lyra possessing 7 to 10 

 teeth. On the other hand, the mature ovary in 8. lyra (see 

 p. 59, tab. 18, and pi. 6, fig. 43) extends nearly, if not quite to 

 the ventral ganglion, whereas in 8. gazelle Ritter-Zahony 

 (1909c, p. 788) says: "Die Ovarien machten trotz ihrer 

 Kiirze bei einigen Individuen sclion den Eindruck der Reife." 

 Inasmuch as a figure of /S*. gazelle has not been published and 



