A new species of notodelphyid copepod associated with Ρterygascidia longa (Van Name, 1918) from the Basilan Strait, Philippines

In research on the two ascidians Pterygascidia mirabilis Sluiter, 1904, and P. longa (Van Name, 1918), Tokioka (1971a, b) found some copepods associated with both species. We were given the opportunity to examine these crustaceans. The copepod described below, Goniodelphys tokiokai n. sp., is a notodelphyid inhabiting the branchial sac of P. longa. The material was obtained from a few specimens among 20 ascidians which were collected by the Snellius Expedition on 5 September 1929, and deposited at the Rijksmuseum van Natuurlijke Historie, Leiden. As the copepods living in P. mirabilis belong to a family other than Notodelphyidae they will be reported in a future paper. We wish to express our warm thanks to Dr. Takasi Tokioka, of the Seto Marine Biological Laboratory, for collecting the copepods from the ascidians and providing us the opportunity to examine the specimens, and for many other favors. We are indebted to the Rijksmuseum van Natuurlijke Historie, Leiden, for permission to study the material. Goniodelphys tokiokai n. sp. Specimens examined: 6 females, all adult, from Pterygascidia longa (Van Name, 1918) preserved in formalin, Snellius Expedition, Station 60, 6° 58'N 1210 52.5Έ, in the Basilan Strait between the islands of Basilan and Mindanao, 72-80 m deep, September 5, 1929. Types. — The types are preserved in the collection of the Rijksmuseum van Natuurlijke Historie, Leiden. The holotype under no. Crust. F 793, a paratype under no. Crust. F 794. Description. — Female (figs. 1-4). Body (fig. 1a) compressed, rigid from heavy cuticularization of integument. Three major body divisions, cephalo-