TYPES OF POLYCHAETE WORMS HARTMAN 125 



EUPANTHALIS MACULOSA (Treadwell), new combination 



Macellicephala maculosa Treadwell, 1931, p. 313 (U.S.N.M. no. 19543, Philip- 

 pine Islands). 



The type is a fragment of 64 segments; a posterior piece is lack- 

 ing. Its setal, prostomial, and parapodial structures align it with 

 the Polyodontidae. The body is long, vermiform. Eyes are sessile ; 

 lateral antennae are inserted terminally, and the median antenna is 

 near the posterior margin of the prostomium. Parapodia are pro- 

 vided with glandular fibers. In these respects it agrees with 

 Eupanthalis. 



Genus POLYODONTES Renier 



POLYODONTES OCULEA (Treadwell) 



Panthalis octilea Treadwell. 1902, p. 188 (U.S.N.M. no. 15961, West Indies). 

 Polyodontes oculea Monro, 1928, p. 572. 



This species has been redescribed and assigned to tliis genus by 

 Monro. Treadwell's illustration of the length of lateral prostomial 

 antennae is practically as in the specimen; hence these appendages 

 are notably longer than those in Monro's specimens. The absence of 

 penicillate setae and the presence of a prostomial caruncle are char- 

 acteristic of the type. 



Genus EUPOLYODONTES Buchanan 



EIJPOLYODONTES ELONGATA (Treadwell), new combination 



Figure 41, a-d 



Iphionella elongata, Treadwell, 1931, p. 315 (U.S.N.M. no. 19544, Philippine 

 Islands). 



The prostomium consists of two rounded lobes separated by a 

 median depression. Each half has a large anterior eye directed 

 anteriorly and a smaller dorsolateral eye on the posterior half of 

 the lobe (fig. 41, a). Paired antennae are inserted terminally; they 

 are long, slender, with a slight subterminal enlargement (fig. 41, a). 

 No nuchal tentacle or papilla has been distinguished. First segment 

 (peristomial) is apparently without setae. 



Elytra are broadly orbicular, with a shallow indentation near the 

 anteroectal margin; the margin is entire but slightly ruffled along 

 the median or also the outer edges; the point of insertion is far to 

 the side (fig. 41, h). Elytrophores are present as follows: On 2 

 (first setigerous segment), 4, 5, 7, 9, . . . and on all alternate seg- 

 ments at least to 43. 



