L. PULCHRA, Blainv. PL 54, ligs. K>5-1()7. 



This species attains the length of 3 inches mid is supposed 

 to be adult at that size. Tin- very small size of its tins consti- 

 tutes its principal character. 



Mediterranean, Mrmth f tin Loire, etc. 



L. ALESSANDRINII, Verany. 1*1. 57, fig. ISO. 



Body oblong-^ cylindrical, rounded behind ; fins about two-fifths 

 the length of the body, posterior, rounded ; clubs of tentacles 

 with large external suckers and very small middle ones. Shell 

 not observed. Length, about 3 inches. 



Differs from L. pulchra by its rounded fins. 



L. MENEGHINII, Verany. PL 57, fig. Lsl. 



Body oblong, acuminated behind ; fins posterior, rounded. 

 scarcely half the length of the body ; tentacles long, clubs but 

 little developed, with two rows of very small suckers. Shell not 

 observed. Length, about 3 inches. 



Differs from L. pulchra by its body acuminated behind and 

 rounded fins; from L. Alessandrinii by the former character. 



Medina. 

 L. AFFINIS, Lafont. PL 55, fig. 1GU. 



The male only, of this species is known. The narrow, cylin- 

 drical body, unequal cups of the tentacular clubs and obtusely 

 rhomboidal, large fins form its principal characters. (', to S inches. 



It, It/ < if /)/X(V///. 



L. MICROCEPHALA, Lafont. PL 55, fig. 170. 



Head very small, scarcely more than half the diameter of the 

 body, eyes moderate, fins long, obtusely rhomboidal : clubs with 

 live pairs of large cups and numerous smaller ones. 



Attains a length of -2 feet. 



L. URKVin.i's. Steenstrup. PL 55, fig. HJS. 



Differs from L. ml, //!//.< by its shorter arms and smaller head. 

 It is the northern form of that species. Length of body, 1 foot; 

 of tentacles, 6 inches. The dentition is the same in both species. 



This appears to me to be very like /,. microcephala. 



German Ocean; Baltic Sea. 



