142 LOLKio. 



A. Buccal membrane unitli seven projections, the margins of which are 

 usually armed with suckers. 



* Shell pennale, wings with convex margins. 



L. BREVIPINNA, Lesueur. PI. 51. figs. 128-1:50. 



The very narrow iins form the principal character of this 

 species; but I have seen specimens which apparently connect it 

 with L. Pealii, Lesueur. It is considered by several good 

 authorities to = L. brevis, Bl., but that species is much more 

 closely allied to the typical L. Pealii. If the whole group of 

 American species be united into one. L. Pealii will have priority 

 over till other names. L. brevipinna is common on the southern 

 Atlantic coast of the Tinted States. It has been captured as 

 far north as Delaware Bay. 



L. HEM1PTERA, Howell. PI. f> 1 . figs. 1 Ml . 182. 



The type specimen is small and exhibits various evidences of 

 juvenility. There is a difference of form in t he Radius, ami it 

 may be distinct from the above. Howell says that it is not 

 found north of the coral reel's. 



Florida, Gulf of Mexico. 



L. BREVIS, Blainv. PI. f>2. figs. 143, 144. 



Distinguished by its short, nearly rounded tins. The figure 

 represents a typical individual, and it appeai-s to have better 

 developed Iins than L. brevipinna. and to differ from L. Pcalii 

 by these being rounded in outline instead of rhoinboidal ; but 1 

 have examined specimens in which the form of Iins is inter- 

 mediate, so that it is very diflicult to place them. 



Brazil. 



L. PKALII, Lesueur. PI. f>l. tigs. 1.-J3-140. 



The fins in typical forms are rounded rhomboidal. well devel- 

 oped ; the body is rather short, stout; the skin is beautifully 

 punctate with close red spots which are crowded along the back. 

 The curious dentition of the cups of the sessile and tentacular 

 arms is shown by our ligmvs. Verrill has figured the develop- 

 ment of this species in Report of I". S. Fish ( 1 ommissioner for 

 l^Tii. He says that numbers of the free-swimming young of 

 this species were often found in the stomach of the red jelly-lish. 



