606 A. JEJ. Verrill — Turbellaria, Nemertina, and 



fade out posteriorly and are often indistinct anteriorly. Color, in 

 life, was not noted. One $ was found filled with eggs. 



Length of preserved specimens usually 20-25™'"; diameter, .75 to 



1 mm 



Common among corallines and in dead corals. 



Syllis jugularis, sp. nov. 



This species is closely related to S. catenula, with which it agrees 

 very nearly in its cirri and set^e. It is somewhat smaller and more 

 slender. The most obvious difference is found in the oesophagus, 

 which is much longer and more slender than that of the latter. It 

 is straight and rather narrow, nearly cylindrical, with a basal swell- 

 ing and an even, entire, expanded or flaring margin. Its tooth is very 

 small, conic, close to the edge, or projecting a little beyond it. 

 When extruded its base is at the 14th segment and its margin pro- 

 jects much beyond the head. The stomach is much shorter (about 

 one-half as long), and occupies about 7 segments. It is cylindrical 

 and has numerous regular rows of rounded groups of cells. 



Length, 12'"'^. 



Syllis (Typosyllis) diplomorpha, sp. nov. 



A large elongated species which produces Tetrafflene-zooids by pos- 

 terior fission. Proboscis pale colored, short, stout, shorter than 

 stomach. 



Head large, nearly as long as wide, narrowed behind middle, 

 three-lobed anteriorl^^, broadly and strongly emai-ginate posteriorly 

 (ratio in type 1:1.15). Eyes black, large, the anterior at least twice 

 as large as the others and considerably farther apart, but only a little 

 more in advance, the distance between the two about equal to the 

 diameter of the anterior eyes ; posterior eyes just behind bases of 

 antennae. Palpi divergent, large and broad, about as long as the 

 head, lanceolate, obtuse, incurved on the inside. Tentacle long, 3^ 

 times as long as the head, regularly beaded. Antennae similar, but 

 shorter, about 2^ times the length of the head; upper tentacular cirri 

 about equal to the tentacle ; lower equal to the antennae. First and 

 fourth dorsal cirri long, about ^ longer than the upper tentacular 

 cirri ; 3d and 4tli are somewhat shorter, about equal to the tentacle ; 

 farther back the dorsal cirri are shorter, more slender and tapered, 

 and unequal, the longer ones in the middle of the body are about 

 equal to f the diameter of the corresponding segments ; the shorter 

 ones about half as long. 



