2 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



well, and Glycera spadix Treadwell; to the Museum of Comparative 

 Zoology, Cambridge, Massachusetts for the loan of Goniada quinquela- 

 biata Augener, Nephtys bucera Ehlers and Nephtys phyllocirra Ehlers; 

 to the British Museum of Natural History, London, England for the 

 examination of Nephtys impressa Baird, Nephtys monroi, new name, 

 Nephtys macandrewi Baird and Aglaophamus tabogensis (Monro); 

 and to the State Museum of Natural History in Stockholm, Sweden 

 for the use of all type specimens erected by Kinberg. 



I am especially obliged to Captain Allan Hancock, Director of the 

 Allan Hancock Foundation of the University of Southern California, 

 for continued support and facilities to conduct these studies. All of the 

 accompanying plates and textfigures except plate 17, were ably per- 

 formed by Anker Petersen, Staff Artist of the Allan Hancock Founda- 

 tion, to whom thanks are also extended. 



Superfamily GlycereaGrube 



The superfamily GLYCEREA Grube, 1850, constitutes an as- 

 semblage of species that is clearly recognized for 2 families, the 

 GONIADIDAE Malmgren, 1867, and the GLYCERIDAE Malm- 

 gren, 1867. Although some authors refer all species to a single family, 

 GLYCERIDAE, the separation into separate families is here considered 

 desirable and logical since there are conspicuous gaps between them, 

 with groups of genera constituting each family. 



In the goniadids the anterior parapodia are uniramous, posterior 

 ones are biramous; in the glycerids the parapodia are either only uni- 

 ramous (Hemipodus Quatrefages) or only biramous (Glycera Savigny 

 and Glycerella Arwidsson). In the first the proboscidial paragnaths or 

 terminal jaws are of 2 kinds, including a pair of larger, dentate macro- 

 gnaths and many smaller, H- or Y-shaped micrognaths that are arranged 

 in dorsal and ventral arcs and together form a circlet (textfig. 1). In 

 the glycerids the paragnaths consist of 4 widely spaced sets, disposed at 

 ectodorsal and ectoventral ends (pi. 12, fig. 1); each set consists of a 

 falcate jaw with an attached, embedded aileron. In the goniadids the 

 everted proboscis tends to be long and cylindrical in shape; its epi- 

 thelial surface may be covered with structures that are either uniform 

 (textfig. 1) or greatly diversified (plate 6). In the glycerids the pro- 

 boscis is usually comparatively short and clavate in shape; its proximal 

 surface is covered with structures that are more nearly uniform or at 

 least not greatly diversified. 



