EEEANTIATE POLYCHAETA OF JAPAN. 241 



Gill dendritic, arising from the posterior side of parapodium 

 near base of dorsal ramus. The well-developed gill bears as 

 much as 12 branches, some of whicli extend beyond the upper 

 border of parapodium. Colour of gills darker than their surround- 

 ings. Anal segment conical, slightly longer than the preceding 

 body- segment, witli 2 anal cirri. 



Protruded proboscis 45 — 50 mm. long ; the papilla? oblong, 

 nearly twice as long as broad. Jaws moderately curved, the rod- 

 like part of their posterior prolongation well developed. Behind 

 the jaws, there is a circle of 18 small membranous elevations. 



This annelid lives burrowing in sand and mud between the 

 tide-marks, so that it can ])c got only by digging. 



Habitat : — Misaki (!) ; Otsu in Prov, Hitachi (!) ; Nagai in 

 Prov. Sagami (!) ; Tomo Harbour in Prov. Bingo (!) ; South Japan 



(MAPtENZELLEK). 



Glycera tcsselata Grube. 



PI. XXlAs figs. 5—6. 



1863. Glycci-ji tesselnta, Grnlie. Besclireib. neuer txler wenig bekannt. 



Aunel., (Arch. f. Natnr-gesch. Jahrg. 29, p. 41, Taf. IV, Fig. 4). 

 1868. Glycera tesselata, Elilers. Die Borsten wih'nKM-, p. 054, Taf. 



XXIY, Pig. 2, 33, 34. 

 1885. Glycera tcsselata, Mclntosli. " rh:illeiifi;er " Bep. Annel., p. 343, 



PI. XT J I, fi-. 5. 

 1903. Glycera tesselata. Mooi-o. Proc. Acad. Nat. Sc. Philad., Vol. 



LV, p. 464. 



Body rutlicr slciidcr, consisting of t)0— 08 segments; length 

 50 — 65 mm ; breadtli in about the middk' of body 2. — 2.5 mm. 

 witliout, and .'^.5 — \ mm. witli, parapodin. Parapodium long, 

 cunical, having altout 15 annuli. Segments bi-annulated. 



