•26 " ENDEAVOUR " SCIENTIFIC RESULTS. 



5-6 mm. long, with 12-14 segments, which have the distal 

 margins, and a sharp dorsal keel, finely serrulate ; remaining 

 pinnules similar, but becoming much more slender, longer 

 (8-10 mm.), and with more segments (17-18) ; the sharp, 

 serrate dorsal keel is well-marked. Side and covering plates, 

 highly developed. First syzygy between 3 and 4 ; in eleven 

 arms of one specimen, but in only one arm of the holotype, a 

 second occurs between 5 and 6, and the third is somewhere in 

 the region between segments 18 and 27 ; in the other arms, 

 the second syzygy is generally not until after the twentieth 

 segment ; distally the syzygial interval is at first 6-8, but 

 near the tip of the arm it decreases to 4 or 5. Colour (in 

 alcohol) yellowish-brown; when dry, the shade is much lighter. 



While this species resembles both C. komachi and C. helene 

 in the general character of the arms, the much more numerous 

 cirrus joints, the longer pinnules and the markedly conical 

 centrodorsal seem to prove it is quite distinct. The genus 

 was not previously known from Australian waters. 



Loc. — East of Flinders Island, Bass Strait, 70-100 fathoms. 

 Two specimens. 



Family ANTEDONID^. 

 Grenus Compsometra, A. H. Clark. 



COMPSOMETRA INCOMMODA {Bell). 



Antedon incommoda, Bell, Ann. Mag. Nat. Hist., (6), ii., 

 1888, p. 404. 



Compsometra incommoda, A. H. Clark, Mem. Austr. Mus., 

 iv., 15, 1911, p. 792. 



Loc. — South-east of Flinders Island, South Australia, 37 

 fathoms. Two specimens. 



Compsometra loveni (Bell). 

 Antedon loveni, Bell, Proc, Zool. Soc, 1882, p. 534. 



Compsometra loveni, A. H. Clark, Proc. Biol. Soc. Washing- 

 ton, xxi., 1908, p. 131. 



None of the specimens of Compsometra are especially note- 

 worthy, but they give added weight to the correctness of 

 Mr. A. H. Clark's opinion that there are two distinct species in 

 the seas of south-eastern Australia. To judge from the present 

 collection, as well as from previous records, C. incommoda 

 would seem to be the more southern form, occurring from 

 Port Jackson, New South Wales, southward and westward 



