POLYCLADS OF THE EAST COAST PEARSE 85 



Remarks. — Specimens have been collected in Apalachicola Bay and 

 near Crystal River, Florida, on shells from oyster bars; June 15 to 

 October 15, 1935. During the summer of 1938 several specimens were 

 taken at Beaufort, N. C. 



Suborder Cotylea 



Family PSEUDOCERIDAE 



Genus THYSANOZOON Grube 



THYSANOZOON BROCCHI (Risso) 



Tergipes hrochi Risso, 1818, p. 373. 

 Thyaanozoon brocchi Grube, 1840, p. 55. 



Four specimens of this papillate polyclad were found among 

 eelgrass at Crooked Island Sound west of Farmdale, Fla., No- 

 vember 21, 1935. When alive and extended they measured 33 by 

 10, 31 by 10.5, 28 by 12, and 28 by 8 mm. They swam about 

 actively by waving the sides of their bodies. The colors of the 

 four individuals varied somewhat. In one the dorsal papillae were 

 light brown; between them the body was cream color, with a 

 light yellow reticulum, and minute flecks of black pigment grouped 

 so as to form spots ; a dark median streak had a light irregular stripe 

 running through it ; the region over the brain was unpigmented, but 

 an area about it and extending up onto the marginal tentacles was 

 nearh^ black. The ventrum was buff, with a median light streak. 

 Two specimens had purplish-brown papillae near the median line, 

 and the color became light brown toward the sides; some of the 

 papillae had white spots and dark tips; there was a white T-shaped 

 area between the purplish marginal tentacles ; along the margin there 

 was a brown and purple reticulum, with a tendency to the formation 

 of radial bands. The ventrum was cream color and darker toward 

 the sides. The fourth specimen was intermediate in color between 

 the brown and purple individuals. On February 10, 1936, 11 more 

 specimens of this species were collected in Crooked Island Sound, 

 Fla. They were similar to those previously observed. On March 25 

 and 26, 1936, 14 specimens were collected in St. Joe Bay, Fla. Some 

 of these laid eggs in dishes in the laboratory. 



Genus PSEUDOCEROS Lang 



PSEUDOCEROS MACULOSUS, new species 

 FlQUBE 81 



The following description is of a single specimen that was first 

 examined alive and later preserved, stained, and mounted. In the 



