226 



appearance of the specimens as well as the shape of the anchors 

 and plates afford good characters. It is closely related to the other 

 Australian species of the genus, but is easily distinguished by the 

 reduced anchor-plates and the slender tentacle-rods. 



Leptosynapta vaviopatina n. sp. 



Long Reef, Port Jackson Head. 29.X.1914. Under stones at low water 

 mark. 5 specimens. 



Only one of the specimens at hand is complete, the others being 

 fragments of various sizes. The complete specimen measures 7 cm 

 in length and 0,3 cm in diameter. The colour is greyish-brown. It 

 has twelve tentacles, each with 7 pairs of digits and 6 — -8 sensory 

 cups. The calcareous ring (Fig. 37. 1) is very stout, with distinct 

 muscular impressions. The radial pieces are perforated for the 

 nerves. The cartilaginous ring is wanting. There are 5 polian ve- 

 sicles and a single unbranched stone-canal. The oesophagus is 

 long and thin and distinctly different from the thick and folded 

 intestine. The ciliated funnels are fan-shaped as in dolabrifera and 

 as in that species found only on the body-wall. The gonads are 

 bushy branched and the genital porus is found a little behind the 

 tentacles. A genital papilla is wanting. 



The anchors from the posterior end of body measure ca. 250 ^ 

 in length and 120 fi in width. They are rather stout and their 

 arms are serrate (Fig. 36. 1). The anchors from the anterior end 

 of body are not so long and their arms are short and thick, with 

 only few teeth (Fig. 36. 2). They measure ca. 180 ^ in length and 

 100 fi in width. The anchor-plates from the posterior end of body 

 (Fig. 36. 5-7) measure ca. 170 ft in length and 120 fi in width. 

 They are rather varying in shape. The side-holes are divided into 

 two and the anterior ones are as the seven large holes distinctly 

 serrate. In the articular ends of the plates there are besides the side- 

 holes usually five rounded or oval holes. In the bridges across the 

 side-holes there are usually small round holes. These holes may be 

 wanting, and then the articular end of the plates is distinctly narrower 

 than that of the normal plates. The plates from the anterior end 

 of body are only little smaller than those from the posterior end. 

 They measure ca. 150 — 160 ^ in length by 100 — 110^ in width. 

 Also in these plates the small holes in the "bridges" may be wanting, 

 and the articular end is then as mentioned in the plates from the 



