422 PKOCEEDINGS OF THE ACADEMY OF [July, 



mm. 



Length of third arm 32 



Length of ventral arm * 34 



Length of tentacle 45 



Length of tentacle club 17 



Diameter of largest tentacular suckers 3 



Judging from the single specimen at hand (which, it must be 

 confessed, is not in the best state of preservation), this little species 

 approaches very closely to S. torosa Ortmann, but differs in (1) the 

 decidedly more elongate outline of the body, (2) the smooth horny 

 rings of the sessile arm suckers, and (3) the even more conspicuous 

 enlargement of certain suckers on the tentacle club (decidedly more 

 than "noch einmal so gross wie die iibrigen"). The locular index of 

 the gladius is about the same, unless in calculating it we exclude the 

 chitinous margin, in which case the index is but about 37. The 

 calloused area is, however, relatively greater. 



Other allied forms appear to be S. rouxii d'Orbigny (Indo- 

 Malayan), S. microcotyledon Ortmann (Ceylon), and possibly the 

 Chinese S. sinope Gray, the two latter of which have been discussed 

 by Ortmann (1891, p. 674). S. microcotyledon is the only one 

 described as having .smooth horny rings, but here the structure of 

 the tentacle club is very different. 



Curiously enough, I have been unable to discover any records of 

 cephalopods from Formosa in any of the literature. Although my 

 search may not have been exhaustive, it is probable that the three 

 species here recorded (Sepia formosana, Euprymna morsei, and Sepio- 

 teuthis lessoniana) are the first species to be accredited to the island. 



Sub-genus DORATOSEPION (de Rochebrune, 1884). 

 Sepia (Doratosepion) lorigera walker, 1910. 



Sepia lorigera Wiilker, 1910, p. 12, pi. 2, figs. 3, 4; pi. 3, figs. 11-14. 

 Distribution. — Near Misaki, Sagami (type locality, Wiilker). 



Sepia (Doratosepion) andreana Steenstrup, 1879. 



Sepin Andreana Steenstrup, 1875, pp. 474, 479, pi. 1, figs. 11-19. 



Sepia Andreana Tryon, 1879, p. 193, pi. 89, fig. 408; pi. 90, figs. 409, 410 



(after Steenstrup). 

 Doratosepion andreana de Rochebrune, 1884, p. 96. 

 Sepia andreana Ortman, 1888, pp. 662, 665. 

 Sepia andreana 'Wulker, 1910, pp. 19, 22, 24. 



Distribution. — Japan (Steenstrup) . 



