354 DB. BAIRD ON SEVERAL GENERA OF EUNICEA. 



Family II. ONUPHIDIDiE. 



Onuphididse, Malmgren, Annulat. Polycheeta Spetsberg. Sfc. 1867. 



Head with lobes as in Eunicidse, furnished with seven organs 

 usually described as antennae or tentacula. Two spring from the 

 front of the head, and are very short (antemiules). The remain- 

 ing five are as in Eunicidse. Tentacular cirri generally present, 

 sometimes wanting. Branchiaj pectinated or plumose — or simple, 

 consisting of only one filament. Eyes two. Maxillse as in 

 Eunicidse, 



To this family may be referred five genera, four of which have 

 already been described, which may be thus characterized : — 



I. Onuphis, Audouin Sf M.-Edwards. Branchise pectinate. 

 Tentacular cirri placed laterally on buccal segment. Tentacle, 

 antennae, and palpi annulated more or less throughout their whole 

 length. 



II. DiOPATRA, Audouin Sf M.-JEdwards. Branchise plumose, 

 the branchlets disposed in a spiral tuft round a central stalk. 

 Tentacular cirri placed on the dorsal portion of the buccal seg- 

 ment. Tentacle, antennae, and palpi strongly annulated at tho 

 inferior or basal portion only. 



III. Tbadopia {gen. nov.). Branchia) pectinate. Tentacular 

 cirri placed on dorsal part of buccal segment. Tentacle, antennae, 

 and palpi strongly annulated on the lower or basal portion. 



IV. NoTHBiA, Johnston (Malmgren). Branchise bipartite only. 

 Tentacular cirri placed on the dorsal portion of buccal segment. 

 Tentacle, antenna), and palpi simple, not annulated on any por- 

 tion of their lengtli. 



V. Htalin(ecia, Malmgren. Branchia) reduced to a simple 

 branchial filament. No tentacular cirri. Tentacle, antennae, and 

 palpi annulated at the inferior or basal portion. 



Genus I. Onuphis, Audouin Sf M.-JEdwards, Litt. de la JErance, 

 ii. 151, t, 3a. figs. 1-5 ; Malmgren. 



We have no specimens belonging to this genus in the British- 

 Museum collection. 



Genus II. Diopatba, Audouin ^ M.-JEdwards, I. c. 155 ; Kinberg, 

 Malmgren, Sfc. 



Branchiae plumose, not pectinate, but consisting of a tuft of 

 many short filaments rolled in a spiral form round a <;entral stalk. 



