472 PROCEEDINGS OF THE ACADEMY OF [Sept., 



The ovaries are dorsally placed, and their ducts, usually invisible, 

 lead to the uteri which surround the pharynx, since they are ante- 

 riorly continuous across the mid line. Skirting the pharyngeal folds, 

 the uteri extend backward (PL XIII, fig. 8) and fuse in the mid line, 

 immediately posterior to the penis, to form the egg canal. This 

 median canal is continuous posteriorly with the ample accessory 

 sac (PI. XIII. fig. 14), and in the opposite direction it enlarges into 

 the thick-walled bursa copulatrix which in turn leads to the common 

 opening. 



It is interesting to note in this connection the presence of large 

 quantities of spermatozoa, in two individuals, stored in the accessory 

 gland. That it is not an accidental condition is evidenced by the 

 fact that in many places sperms were attached in dense masses to 

 the epithelial lining. This is the only species in which we have found 

 male reproductive elements in the accessory gland, and accordingly 

 we are not prepared to make any sweeping generalizations, but 

 appearances lead us to the belief that in this species the accessory 

 gland functions, at least in part, as a seminal receptacle. 

 Leptoplana maculosa Stimpson. 



Oblong-ovate; above pale gray with a few yellow spots, median 

 spots obscure, margin hyaline. Primary eye clusters in two ovate 

 spots, seven in each; groups placed at the extremities of the hyaline, 

 transverse, arcuate areola. Two small groups of secondary eyes 

 situated before the middle of the areola; secondary eyes four to six, 

 dispersed in the areola between the primary eyes. Length 0.8, 

 breadth 0.4 inch. 



In the Bay of San Francisco, along the shore under stones in 

 marshy places. (Free translation.) 



Although we have sought for this flatworm in the type locality 

 and in Monterey Bay, we have discovered no specimens that can 

 with certainty be identified as this species. 



Genus PHYLLOPLANA Laidlaw, 1903. 



Leptoplanoid with flattened, leaf-like body. A pair of long muscu- 

 lar vesiculse seminales, which lie parallel to the median ductus 

 ejaculatorius and penis and receive the vasa deferentia of either 

 side, respectively, at their hinder ends. 



Phylloplana litoricola sp. nov. 



This species is represented by nine individuals, living on the 

 under surface of stones below the medium-tide mark along the southern 

 shore of Monterey Bay. It is fairly active and capable of swimming 



