1 1 



Japan measures 60 mm. in length; the breadth of the Siboga-specimen is 15 mm., that of the 

 Japanese worm 23 mm. The number of segments of our specimen is only 40, whereas 

 von Marenzeller mentions 48. In the Siboga-specimen the diameter of the bare medio-dorsal 

 field is only i 1 /,, mm., half as broad as in that from Japan. Also with regard to the number 

 of branchiae our specimen shows some difference, as I could recognize but seven pairs of them 

 in stead of eight (v. Marenzeller) ; however the seventh gill is already dichotomously divided 

 at its base, and can easily be split in two distinct ones, so I think this a discrepancy of little 

 importance. Moore also found only 7 pairs of branchiae to each somite in a specimen from 

 Suruga-bay (Proc. Acad. Nat. Sc. Philadelphia, 1903, p. 426). Marenzeller utters some doubt 

 about the true nature of the branchial processes of the dorsum; though by the observations 

 of Mc Intosh (1885, p. 3) and St. Joseph (1888, p. 191) this uncertainty was rather well put 

 aside, I think that our investigations about E. pilosa will now settle this question definitively. 

 Von Marenzeller's statement, that the ordinary bifid bristles of the notopodium and those of 

 the neuropodium should be identical, is not quite right. 



7. Euphrosyne laurcata Sav. PI. VI, fig. 10. 



J. C. Savigny, Système des Annelides, p. 63, PI. II, fig 1. 



Stat. 115. East side of Pajunga-island, Kwandang-bay (N. Celebes). Reef. 2 specimens. 



Stat. 127. Taruna-bay, Great-Sangir-island. Reef. 1 specimen. 



Stat. 131. Beo, Karakelang-islands. Reef. 1 specimen. 



Stat. 144. North of Salomakiee (Damar)-island. Reef. 1 specimen. 



Stat. 152. Wunoh-bay, N.W.-coast of Waigeu-island. 1 specimen. 



An Annelid of elongated shape, with on each segment seven to eight pairs of branchiae, 

 divided in numerous filaments, that are foliaceously dilated at the tip. The lateral dorsal cirrus 

 situated between the second and third branchiae. The transverse row of dorsal bristles in front 

 of the three to four median gills ; ringent bristles of the type of E. foliosa gathered in a group 

 in front of the median branchia. Caruncle extending over five segments. 



Euphrosyne laureata appears to be widely distributed in the Malay Archipelago, for it 

 was collected by the Siboga-expedition on the reefs of five different Stations and it was already 

 mentioned by myself in 1885 from Timor; moreover Savigny's specimens came from the Red 

 Sea and Semper found it near the Philippines (Grube 1878, p. 11). The largest specimen, 

 collected at Station 127, measures 32 mm. in length and \2 v \„mva. in breadth (the branchiae 

 included) and has 38 segments, whereas the specimen mentioned by Savigny has a length of 

 50 mm. and a breadth of 25 mm., the number of its segments amounting to 41. The specimen 

 of the Philippines has, according to Grube, only 35 segments and measured 2Ó 1 / 3 mm. in length. 

 The bare medio-dorsal field is somewhat narrower than the latero-dorsal part, covered with 

 branchiae. The caruncle, as already stated by Grube, extends over five segments till the 

 anterior margin of segment VI, whereas according to Savigny's illustrations it should only 

 reach the fourth ring; its lateral lobes, with an undulated border, commence from the inter- 

 segmental groove between the first and second ring. The ventral eyes and the adjoining tentacles 



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