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PROCEEDINGS OF THE NATIONAL jVIUSEUIM 



VOL. 86 



The lateral extensions of the jaw pieces ha^-e teeth as follows: 4 

 above and 5 below on the right side, and 5 above and 4 below on the left 

 side. Setae are of 3 kinds (description based on a 10th parapodium) ; 

 A superior fan-shaped fascicle of 30-35 long, pointed serrulated setae 

 and a similar fascicle in the inferior part of the nenropodium, (2) 

 an anterior fan-shaped fascicle of finer, shorter bristled capillaries 

 (fig. 41, d) in front of the serrulated setae, and (3) about 8 stout, 

 aristate spines (fig. 41, c) in a posterior series. No plumose setae 

 have been observed. 



PiGCRE 41. EUPOLTODON'TES ELONGATA (TroadweU) 



a, Pro.stomium in dorsal view with left lateral antenna turned unnaturally to right, X 45 ; 

 h, eleventh right elytron in dorsal vii-w. clytral scar indicated in dotted outline, X 28 ; 

 c, tip of stout aristate seta from tenth parapodium, the distal style probably lost, 

 X 294 ; d, tip of slender capillary seta in anterior fascicle from tenth parapodium, 

 X 294. 



Genus PANTHALIS Kinberg 



PANTHALIS ADUMBRATA Hoagland 



Panthalis adumhnita Hoagland, lt»20, p. 606 (U.S.N.M. no. 18944, Philippine 



Islands). 

 PanthaUs helhri Holly. 1934, p. 148 (Philippine Islands). 



The description of P. helhri compares favorably with that of P. 

 ad^unhrata. Holly has given good illustrations of the characteristic 

 elytra as well as the setae. 



PANTHALIS PANAMENSIS Chamberlin 



PanthaUs panaiticnsis Chamberlin, 1919, p. 86 (U.S.N.M. no. 19431, Panama). 



This species resembles P. adiimhrata in having stalked ommato- 

 phores. It is smaller, however, probably less than 50 mm long; the 

 elytra lack the black edges, and the prostomium is widest in the 



