Galti/ Marine Ldboratoryy St. A}ulriws. 3 



A fragment devoid of tlie anterior re{<ion, reserubliiij^ 

 a curved larva of an insect, of a rounded form and 

 apparently tliickest posteriorly, for it tapers anteriorly, 

 where the segments are longer, and closely ringed through- 

 out the rest of its extent. Each segment bears two short 

 gills, thus dittei'ing from Etimcnia crussa or E.Jefrei/sii, and 

 they are longest behind the middle and diminish in the 

 caudal region. They spring apparently from the ])osterior 

 edge of each segment-junction, and generally in the pre- 

 |)ar<ition present a somewhat club-shaped outline (PI. 1. 

 lig. 3) with a firm cutieular investment having a finely 

 granular hypoderm beneath. They are marked by transverse 

 striai, probably due to the circular fibres, whilst internally is 

 a large blood-vessel which may form a loop distally, though 

 tlie state of the specimen rendered this uncertain. Some 

 of the gills contained large granular cells, but the nature of 

 these has not been ascertained. 



The segments (i'l. II. fig. U) arc simple — that is, without 

 rings, — each dorsally slightly overlapping the anterior edge of 

 the succeeding segment, and from the curve of the Jbody the 

 dorsal autero-posterior diameter is wide, the ventral narrow. 

 The posterior segments become increasingly narrow and 

 terminate in the anus, which has beneath it two papillae. 

 The dorsiJ surface of the body is convex, the ventral presents 

 a slightly Hattened surface with a shallow groove posteriorly. 

 The cuticle, moreover, by di])ping in formed a series of 

 reticulations, which here and there were arranged in long 

 rows. 



A remarkable feature was the apparent absence of bristles, 

 no trace of which was observed until the fragments were 

 put in xylol, when a vertical row of minute points — apj)ar- 

 ently the bases of bristles, though at first sight resembling 

 minute uncini — was observed. The arrangeuient of the gills 

 at once distinguishes this species from Eumeniacrassa, CErst., 

 and E.jeffreysii, M'l. 



Eumenia caulltryii *, sp. n. 



Dredged in an inland sea in Japan, lat. 35°48'N. and 

 long. 133° 19' E., in 26 fathoms, in 1874, by Capt. St. John, 

 and kindly forwarded by the late Dr. Gwyn Jeffreys. 



Two complete examples resembling Eiimenia crassa, (Erst., 

 in generiil apjcarauce, but which had been rendered horny 

 by drying, were obtained, the ends especially sullering from 



* Noinecl after Prof. Maurice Caullery, of tlie Sorbonnt', Paris, a 

 distiuguislitd iuvesti<rator of the Polycbiits. 



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