Lol.Hlo. I I.", 



tint [ins are longer ; dilfers from L. Ihiruurrlii in the li 

 longer. Mini the shell broader, with :i narrow s|t-m. 



I n di, i it Ocean. 



L. CIIINK.NSIS. (Jr.-iv. 



Body Bubcylindrical, acuminated behind, with rhomboidal fm>. 

 Rings of tin- cups of the ventral pair of anus with many < 

 :iciHc teeth ; tentacular arms with numerous rather large <'\i\^ 

 and s.)iiie ralhei- small ones at the tip, rinu's with distant t.i-ctli. 

 Shell broad -lanceolate with a short, broad stem. K:ilcn in Canton. 



Not limnvd. 



China. 



L. Si M \T!iF.NS!s. Ker. and Orb. PL 58, figs. 100. 10 1 



Body short, t-ylindrieal. attenuated behind ; fins regularly 

 rhomboidal. truncated in front, angles rounded, nearly hall' the 

 length of the body; arms moderate; tentacles very long and 

 slender. Shell oblong, spoon-shaped : upper part rather narrow 

 and produced. Placed by Gray in his genus Tnif/ii*, but evi- 

 dently a true Loiujo. 



Sumatra. 



L. vu i,<; A IMS. Lam. 



From this common European species have been separated by 

 the minute perception of modern naturalists, a number of so- 

 called, specific forms, the distinctness of which appears to me to 

 be problematical. The diameters, which are comparative, may be 

 individual only, in their strict limitation, or they may, perhaps, 

 indicate varieties or even sub-species. I give the table of dis- 

 criminative characters constructed by Lafont. and proceed with 

 the descriptions of these forms. 



A. Fins shorter than hall the length of the body. 



L. ALI SSANDKINII, L. MENKGHINII, L. PUI.CHRA. 



/i. Fins lonovi- than half the length of the body. 

 "' ( ups of the tentacle^ very unequal. 



Eye small. L. AFFINIS. 



Fyc moderate. 



L. BREVICEPS, L. NEGLECTA, L. MICROCEPHALA. 



Bye very large. b. VULGARIS. 



** Cups of the tentacles nearly equal. 



Eye small. L. FORBKSM. 



Fye very lar.uc. L. MACKOPTFIALMA. 



19 



