Cloiadg; surface feticuiated witll strings of bissek punctEej tentacuia sitnated 

 in a dear space at the anterior fourth of the length of the body ; ocelli in four 

 clusters, two on the tentacula at their bases in front, and two oblique ones anterior 

 to and between the tentacula. Length 2 inches. 

 Hab. Loo Choo. 



56. Leftoplana sparsa. Oblong, subtruncate before, of a pale brown color ; 

 ocelli very minnte, scattered along the margin of ths anterior half of the body, 

 and forming three clusters on the head, one large central and two very small 

 lat-eral ones. Length 1 inch. 



Hab. Kikaiaima. 



57. Leptoplana ActriA. Oblong, pointed at both extremitJes, pale grey, mot- 

 tled with brownish ; ocelli few, minute, in two lunate clusters convex outwards. 

 Length ^ inch. 



Hab. Chinaj 



58. Leptoplana OBSCURA. Elongated oval, dark-brownish TVith a tint of lilac, 

 often maculate, paler along the middle of the back ; ocelli few, minute and in- 

 conspicuous, in the two parallel linear clusters at the middle of the head, and 

 scattered along the anterior margin. Length ^ inch. 



Hab. China. 



59. Leptoplana TRULLiEFORins. Elongated, trowel-shaped, broadest at the 

 head, of a pale brown color; ocelli situated in a clear space anteriorly, forming 

 two conspicuous diverging clusters, and four small nebular ones, placed before 

 and behind these, and confluent with them. Length f inch. 



Hab. China. 



60. Leptoplana collaris. Elongated, truncate in front, tapering and rounded 

 behind; ocelli in two elongated clusters, confluent anteriorly and diverging 

 from each other posteriorly ; color pale greyish with two dark-brown longitudi- 

 nal lines ; a transverse white band just behind the eye clusters. Length h inch. 



Hab. Loo Choo. 



61. Nareda serpentina. Elongated, somewhat flattened, brownish ; head 

 broader than the body, emarginale in front ; neck well contracted; eyes two, 

 rather large, bilobate, placed one on each sid* at the middle of the head, 

 Length 2J inches. 



Hab. Loo Choo. 



62. Meceelia pipehata. Greatly elongated, depressed and broadest at the 

 middle ; color light yellowish, sprinkled with black in transverse clouds ; margin 

 white ; head narrower than the body, white in front of two large black spots near 

 the middle ; lateral fissures extending obliquely upward to the back, and sepa- 

 rated anteriorly from the wide transverse mouth by a bright crimson partition ; 

 genital aperture placed anteriorly, before the middle of the head. Length 8 

 inches. 



Hab. Eikaisima. 



63. Meceelia cingulata* Slender, reddish-brown, with distant white annula- 

 tions regularly arranged, the first gifding the middle of the head, which is also 

 margined with white ; head oblong, truncate and emarginate in front ; neck dis- 

 tinct ; genital aperture just before neck below. Length 4 inches. 



Hab. China. 



64. Meckblia albo-a-ittata. Slender, grass-green ; bead truncated, a little 

 narrower than the hody, margined with white and crossed by a white baud at a 

 point about the middle of the lateral tiasures. Length 3 inches. 



Hab, Loo Choo. 



65. Meckelia sinensis. Subcylindrical, head elongated, narrowing to a sniflU 

 truncate extremity ; neck well defined ; color of body dark reddish-brown, head 

 sprinkled with minute patches of the same. Ltnglh 1.^ inches. 



Ha^. Chine., 



