662 A. JEJ. Verrill — Turhellaria^ JSFemertina, and 



The following Bermuda species differs so much from the type that ■ 

 it seems to require separation as a subgenus. 



Eugrymaea, sub. gen. nov. 



Differs from typical Strehlosoma in having 4 clusters of cirriform 

 branchiae on segments 2, 3, 4, 5, and sometimes a few cirri on the 6th 

 segment. The capillary setae begin on the 1st branchiferous seg- 

 ment, and continue on about 35 to 45 segments, or nearly to the 

 end of the body. 



Streblosoma (Eugrymsea) polybranchia, sp. nov. 



Body rather slender. The two anterior segments have a lateral 

 lobe on each side. Tentacular cirri long. Lower lip small, semicir- 

 cular. The branchiae consist of four crowded clusters of long, sleft- 

 der cirri on each side of the first four setigerous segments, with a 

 few in one case on the fifth; the first ones are largest. The fascicles 

 of setae begin with the branchiae; the first ones are well developed; 

 the last observed, which are on the 45th segment, are very small. 

 Anteriorly there are 8-10 or more long, slender ones, narrowly lim- 

 bate, with very slender tips, and about the same number of shorter 

 ones, more broadly limbate on one side, much bent distally, and with 

 shorter tips. The fascicles become abruptly smaller beyond the 

 17th segment. No pennate setae were observed. 



The uncini begin on the 4th setigerous segment. They form 

 simple curved rows of 40 or more on the anterior segments, and 

 shorter rows of 10-14 posteriorly. They are minute, about as long 

 as high, with an elongated base, narrowed anteriorly and ending in 

 a small muscle-tubercle, convex on the middle of the base, but con- 

 cave on the posterior margin, which inclines forward, so that the 

 posterior end is prominent and rounded, with a small tubercle for 

 the ligament; rostrate hook large and only a little incurved; seen in 

 profile there are two or three small apical denticles or hooks; in a top- 

 view there is the central rostral hook and two small hooks at its 

 base, side by side, and one or three very minute ones in a row 

 farther back, the middle being slightly larger and often the onl}^ one 

 visible. 



Color, in life, pale flesh-color; cirri whitish. Length, in life, 

 about 40""^. Castle Harbor, in dead corals. 



Protothelepus, gen. nov. 



Allied to Euthelepus. The first segment forms an erect, plain, 

 narrow collar ai'ound the bases of the cirri. A single pair of long, 



