MARINE INVERTEBEATA OF GRAND MAN AN. 27 



Besides the above nudibranches, a specimen of a remarkable and probably new 

 form, was taken, but it is not here systematically characterized, as only a few 

 rough notes of it remain, it having fallen a sacrifice to the voracious jaws of certain 

 Dendronoti shortly after its discovery. Some idea of its form may be derived from 

 Fig. 15. It approached Eolis in the characters of the head and tentacula, while 

 its branchias were in the form of numerous scalloped transverse ridges, or raised 

 membranes. It was of a dark reddish-brown color, dotted with black ; except the 

 foot, which was white. 



CEPHALOPODA. 



LoLiGO Barteamii, (?) Les., J. A. N. S., ii. 92. A species of Loligo is common 

 here during some seasons, and is used by the fishermen for bait. I did not meet 

 with it myself; but from their accounts I am inclined to refer it to the above 

 name. 



DENDROCCELA. 



For the elucidation of this part of my subject, I am indebted to my friend, Mr. 

 Charles Girard, who has for some time devoted himself to the subject, and to whom 

 I referred my notes and specimens. 



PLANARIDiE. 



Procerodes Wheatlandii, Grd., Bost. Proc, iv. 251. Under stones near high- 

 water mark. 



Ttphlolepta acuta, Grd., n. s. Body depressed, ovoid, elongated, posteriorly 

 rounded ; anterior extremity terminating in an acute point ; mouth underneath, 

 and situated at about the middle of the body. Length about a sixteenth of an 

 inch. Ground color pale, with reddish confluent blotches above. Found in con- 

 siderable numbers creeping over the surface of Gliirodota Icevis. 



Leptoplana ellipsoides, Grd., n. s.. Fig. 16. Greatest length one inch, width 

 about five-eighths of an inch. Color light 3'ellowisli-brown above, gray beneath. 

 Two anterior elongated and narrow gray patches, and two posterior ones, rounded 

 and black, situated immediately behind, and farther apart. These patches, at first, 

 appear as if two simple pairs of visual organs; but on close examination with a 

 magnify ing-glass, they are resolved into an agglomeration of minute and black 

 specks. This species swims by rapid undulations, somewhat as in Aplysia. One 



