POLYCLAD FLATWORMS — HYMAN 593 



definite clusters. The intermediate character of these two species 

 gives grounds for doubt that AmakiLsaplana can be maintained as a 

 distinct genus. 



Collecting Stations 



Following is a list of stations at whicli polyclads were collected in 

 the Palau Islands by a team composed of R. R. Harry and H. A. 

 Fehlmann of Stanford University and F. M. Bayer of the U. S. 

 National Museum. Geographical coordinates of each locality based 

 upon Hydgrographic Office charts are noted in parentheses. Num- 

 bers of traverses and islands in Iwayama Bay follow the work of 

 Abe (1937) and of Abe, Eguchi, and Hiro (1937). 



Sta. 28. July 21, 1955. Outer reef at eastern end of Urukthapel Island, about 

 m miles north of Pkulasuch Point: 7°16'13" N., 134°27'35" E. (H. O. 6103, 

 1st. ed., 1944). Depth 2-4 ft., in breakers; bottom covered with Turbinaria 

 (Acerolisa riigosa, n. sp.; Leptoplanidae, juv.) 



Sta. 30. July 22, 1955. Iwayama Bay, between south shore of Kaibakku 

 (Island xxix) and Kogai-hant6, Auluptagel Island (traverse xi): 7°19'12" N., 

 134°29'37" E. (H. O. 6076, 2d ed., 1944). Depth 0-3 ft.; sand, coral, with 

 vegetation consisting mainly of Enhalus and Caulerpa. (Asolenia deilogyna, 

 n. sp.) 



Sta. 37. July 25, 1955. Middle of channel between Peleliu and Ngedebus 

 Islands: 7°2'57" N., 134°16'20" E. (H. O. field chart 4007). Depth 4-8 

 feet; bottom sand with massive coral heads and vegetation of Enhalus ncoro- 

 ides. (Psevdoceros fuscogriseus, n. sp.) 



Sta. 47. July 28, 1955. Iwayama Bay, in cove formed by west arm of Kogai- 

 hant6, around Islands xxxiii and xxxiv: 7°18'58" N., 134°29'32" E. (H. O. 

 6076, 2d. ed., 1944). Depth, 0-10 ft.; bottoni sand with living and dead 

 coral with Enhalus growing in sand and Padina on rocky areas. (Lepto- 

 planidae, juv., from sponge washings.) 



Sta. 60. Aug. 5, 1955. North shore of Koror Island, west of Ebadul's Pier: 

 7°20'48" N., 134°28'12" E. (H. O. 6076, 2d. ed., 1944). Sand flat; occa- 

 sional coral heads, with Enhalus growing on sandy areas, Sargassum attached 

 to rocks. (Leptoplanidae, juv.) 



Sta. 64. Aug. 7, 1955. Small bay at southern end of Meherehar (the lagoon of 

 Eil Malk): 7°9'23" N., 134°21'48" E. (H. O. 6078, 1st ed.). Depth 6-20 

 ft.; bottom Hmestone, little sand and scant coral; among sponges, hydroids, 

 and tunicates. (Latoceslus pacificus Laidlaw.) 



Sta. 69. Aug. 8, 1955. Lagoon margin of reef extending north between east 

 end of Urukthapel Island and Malakal Pass: 7° 16' 10" N., 134°27'26" E. 

 (H. O. 6103, 1st ed., 1944). Depth 3-4 ft.; Hving and dead coral, rubble; 

 pot holes with sand. (Pseudoceros izuensis Kato; Acerolisa ritgosa, n. sp.) 



Sta. 77. Aug. 10, 1955. Bay in southernmost coast of Auluptagel Island; in 

 mouth of bay and narrow pass at its middle: 7°17'52" N., 134°29'20" E. 

 (H. O. 6105, 1st ed.). Depth 1-12 ft.; bottomsand, some coral rubble and 

 limestone; vegetation of eel-grass, Caulerpa, and Halimeda. {Pseudoceros 

 caeruleocinctus, n. sp.) 



