NO. 3 deichmann: holothurioidea; parti, dendrochirota 69 



633-37. March 6, 1937. San Gabriel Bay, Espiritu Santo Island, Gulf 

 of Calif., 18 fms. 

 Thyonacta niexicana, new species 



677-37. March 15, 1937. Ildefonso Island, Gulf of Calif., 50 fms. 

 Fentamera chiloensis (Ludwig) 



679-37. March 15, 1937. Outside of Concepcion Bay, Gulf of Calif., 

 30 fms. 

 Thyone bidentata, new species 



683-37. March 15, 1937. Outside of Concepcion Bay, Gulf of Calif., 

 12 fms. 



Cucumaria californica Semper 

 Pentamera chierchia (Ludwig) 

 Neopentamera anexigua, new species 

 Thyone bidentata, new species 

 Pachythyone pseudolugubris, new species 



686-37. March 16, 1937. Concepcion Bay, L. Calif., 12 fms. 

 Thyone bidentata, new species 



699-37. March 19, 1937, Angeles Channel, Gulf of Calif., 30 fms. 

 Cucumaria chilensis Ludwig 



719-37. March 24, 1937. Consag Rock, Gulf of Calif., 6-8 fms. 

 Thyonacta mexicana, new species 



744-37. April 1, 1937. Near Point Piaxtla, Sinaloa, Gulf of Calif., 

 6-8 fms. 



Pachythyone pseudolugubris, new species 

 Psolidium dorsipes Ludwig 



780-38. January 14, 1938. Chatham Bay, Cocos Island, Costa Rica, 

 40-47 fms. 

 Psolus diomedeae Ludwig 



784-38. January 17, 1938. Darwin Bay, Tower Island, Galapagos, 

 Middle Beach, shore. 

 Pentamera chierchia (Ludwig) 



792-38. January 20, 1938. Off Daphne Minor Island, Galapagos, 70- 

 80 fms. 

 Psolus diomedeae Ludwig 



814-38. January 28, 1938. North of Hood Island, Galapagos, 20-40 

 fms. 

 Thyone neofusus, new species 



