DE. BAIED ON SEYEEAL GENEEA OF ETJNICEA. 355 



Tentacular cirri of moderate length, arising from under the dorsal 

 edge of buccal segment. Tentacle, antennae, and palpi strongly 

 annulated on the lower portion or root, which is of considerable 

 length. 



Sp. 1. DiOPATEA AMBOINENSIS. 



Diopatra amboinensis, Audouin ^ M.-Edwards, Litt. de la France, ii. 

 156, tab. 3 A. figs. 6-8; Grube, Quatrefages, Sfc. 



In this species, of which we possess only one specimen, the 

 simple setae of the feet are of two kinds — one shorter than the 

 other, slightly elbowed near the point, which is very acute, the 

 other much longer, lanceolate, and indistinctly or very minutely 

 serrate on the margins. Pectinate setae numerous, the broad 

 head on which the teeth are placed, with its pectinations, being 

 disposed obliquely. There appear to be two uncini or booklets 

 to each foot, of a stout form, and forcipate at extremity, but no 

 aciculae. 



Ilab. Amboina, M.-Edwards. (No habitat to our specimen.) 



Genus III. Teadopia, Baird. 

 Branchiae pectinated. Tentacular cirri placed on dorsal part 

 of buccal segment. Tentacle, antennae, and palpi strongly annu- 

 lated on inferior or basal portion, which is more than half the 

 length of the whole organ. 



Sp. 1. Teadopia maculata, Baird. 



Body about 8 inches long, narrow, tapering gradually to the 

 tail. Eather flat on dorsal surface, and somewhat convex ante- 

 riorly on the ventral surface. Head rather small. Antennules 

 very short. Tentacle, antennae, and palpi very difterent from 

 each other in length : tentacle and antennae short, of about equal 

 length; palpi long, nearly double the length of the antennae. 

 These organs are all finely and closely annulated on the basal por- 

 tion, which is marked anteriorly with a row of dark spots through- 

 out its whole length, are rather thick, and at least double the 

 length of the anterior or terminal portion, which is short, smooth, 

 and filiform. The tentacular cirri are short and slender, placed 

 on dorsal portion of the buccal segment. The anterior feet are pro- 

 minent and project upwards. The branchiae are pectinate, com- 

 mencing on the first foot, at first consisting only of two branchlets 

 or filaments, but after the third or fourth becoming more pecti- 

 nate. The tail terminates in two rather short cirri. 



