PALAEOTROPUS LOVENI. 153 



Koehler's figures (1909. Princesse-Alice Ech., pi. xxx, figs. 18-22) show some 

 striking differences, but in view of Koehler's later figures (1914. Ech. Indian Mus. 

 Spat., pi. XVII, figs. 30, 31) and his own comments on his earlier figures, these 

 need not cause any surprise. Globiferous pedicellariae are common; the valves 

 (PI. 145, figs. 29, 30) are .17— .27 mm. long and terminate in two long teeth; 

 the stalks are rounded at the top and have a slight but distinct swelling well 

 above the middle. Tridentate pedicellariae are less common; the valves (PI. 

 145, fig. 84), are .35-.50 mm. long, coarsely, and irregularly serrate on the nearly 

 parallel margins; the stalks are rounded and slightly enlarged at the top. The 

 rostrate pedicellariae are found only on or close to the periproct; the valves (PL 

 145, figs. 32, 33) are from .25-35 mm. long and distinctly curved. The ophice- 

 phalous are abundant; the valves (PI. 145, fig. 27) are .10-. 17 mm. long with 

 the loop .05-08 mm. more; the stalk is as usual, enlarged and hollowed out at 

 the top. The triphyllous are very minute and apparently scarce; the valves 

 (PI. 145, fig. 28) are little more than .05 mm. long. The calcareous particles 

 in the tube-feet (PL 145, fig. 31) are not peculiar, simply curved slightly knobbed 

 rods. 



Palaeotropus ovatus. 



Koehler, 1914. Ech. Indian Mus. Spat., p. 39. 



The differences between this species and josephinae seem of very doubtful 

 value. The single known specimen, only 12.4 mm. long and hence very young 

 was taken by the Investigator in 60-75 fms. in the Bay of Bengal. 



Palaeotropus loveni. 



A. Agassiz, 1879. Proc. Amer. Acad., 14, p. 204. 



Examination of some cotypes revealed only tridentate pedicellariae, with 

 valves .15-25 mm. in length. In form they resemble those described and 

 figured for ovatus by Koehler (1914. Ech. Indian Mus. Spat., p. 42; pi. xvii, 

 fig. 35). The spicules in the tube-feet are distinctly more slender than those 

 of josephinae. The Philippine Islands, north of Mindanao, in 375 fms., is the 

 type locality for loveni, and one specimen was taken by the Siboga south of 

 Timor in 120 fms. 



