HYDEOZOA, SCYPHOZOA, ACTINOZOA, VERMES WHITELEGOE. 393 



Two specimens appear to belong to this species, they are not 

 in a good state of preservation and it is impossible to make out 

 some of the specific characters. 



PERICH^TA SP. 



There are two specimens of another species of Pericheeta 

 probably introduced into the island. The only perfect example 

 is 7 '5 era. in length, the segments are one hundred in number, 

 the /"shaped setae are 0-2 mm. in length, and number about 50 

 per segment. The dorsal and anterior spermathecal pores if 

 present are very small, I failed to find them with a lens. The 

 clitellum occupies the fourteenth, fifteenth, and sixteenth segments, 

 the female pore is situated in a line with the setae on segment 

 fourteen. The male pores occur on the eighteenth segment, 

 they are transversely elongate and papillose, each pore is about 

 1 mm. in length, and the distance between their inner margins is 

 about the same. The median ventral line bears eight papillae, 

 there is one on each segment from fifteenth to twenty-first, the 

 twenty-second being without ; the remaining two are on segments 

 twenty-three and twenty-four. 



The dorsal surface is purplish-brown with green irridescent 

 reflections, sides and under surface lighter. 



Class GEPHYKEA. 



Order SIPUNOULOIDEA. 

 Family SIPUNCULID./E. 



PHYSCOSOMA NIGRESCENS, Keferstein. 



Physcosoma nigrescens (Keferstein), Selenka, in Semper's Reisen. 

 Arch, der Philippinen, iv., Die Sipunculiden, p. 72, pi. ix., 

 figs. 130-136. 



There are two examples of this well marked species, both are 

 well preserved and fully extended. In the larger specimen the 

 body is 2 cm. in length, and the proboscis is about 2-2 cm. 



PHYSCOSOMA SCOLOPS, Selenka and De Mann. 

 Physcosoma scolops, Selenka, Semper's Reisen. Arch, der Philip- 

 pinen, iv., Die Sipunculiden, p. 75, pi. ii., fig. 17; pi. x., 

 figs. 138-144. 



Three examples of this species are in the collection. The 

 largest example is 3 cm. in length, the large chitinous papillae and 

 the intense colour markings serve to readily distinguish this form. 



ASPIDOSIPHON ELEGANS, Cham, and Eysenh. 



Aspidosiphon elegans (Cham, and Eysenh.), Selenka, Semper's 

 Reisen. Arch, der Philippinen, iv., Die Sipunculiden, p. 124, 

 pi. i., figs. 10, 10a; pi. xiv., figs. 124-208. 

 One specimen, the body measures 3'5 cm., the proboscis is 

 wholly retracted. 



