532 A. E. Verrill — Marine Nemerteans 



Caudal cirrus translucent, rather long, slender, acute, usually ele- 

 vated at an angle to the body and two or three times as long as the 

 greatest breadth of the head. Cephalic slits long and deep, mouth 

 elongated, situated far back. Eyes wanting. Color, anteriorly, dull 

 brownish or yellowish red, graduall}" becoming dull greenish brown 

 farther back. 



Length 75 to 100"^"° ; diameter in extension 1.5 to 2"^™. 



Thimble Islands, near New Haven, under stones at low-water 

 mark. Two specimens of this new form were discovered by my 

 daughter, Lucy L. Yerrill, at Outer Island, Aug. 1894. 



In form, color, and habits this closely resembles some varieties 

 of Linens viridis^ but the absence of eyes and the presence of a 

 slender caudal cirrus are characteristic features. 



MARINE PLANARIANS. 



Dr. Girard enumerates a considerable number of American fresh- 

 water Planarians which I do not now propose to discuss. That part 

 is, however, the most important portion of his article. 



The marine species of Dendrocoela are mostly very poorly described 

 and classified and therefore it is very desirable to correlate them with 

 those described and figured by myself in vol. viii. of these Trans- 

 actions. 



Perhaps the most important error in Dr. Girard's article was 

 made when he classified under the head of Marine lihahdocoela a 

 number of genera which are true Dendrocoela, belonging to the 

 group Tricladidia: viz, Fovia, JBdeUoura, Neojiilana. Dinophiliis 

 was also placed under the same heading, though the description of 

 D. horealis^ which he quotes, probably does not refer to a true 

 Dino^jhilus^ but to one of the Rhabdocoela. 



As the numerous sj^ecies of our marine Rhabdocoela, which I have 

 observed, have not yet been described, I shall not now review that 

 group. 



Planocera elliptica Gr'd, p. 190, pi. vi, fiigs. 59, 60=Eustylochus ellipticus 

 Ver., vol. viii, p. 87. 



Mr. W. R. Coe has found numerous specimens of this species 

 having spermatophores imbedded at various places in the integu- 

 ment of the back, showing that it is fertilized hypodermically, as 

 is the case with certain other Planarians and some leeches {Clepsine). 

 His specimens were found in the tubes of Cerehratulus laciexis^ near 

 New Haven, Dec, 1893. 



