EIUIANÏIATE ruLYCHAETA OF JAI'AN. 141 



Luinhriconereis hetei'opoda Marenz. 

 PI. XIV, üg. 19. 



1879, LiinibiicoQeieis lieteropoda, Maieuzeller. Siidjap. Aunel., p. 30. 



1880. „ „ Mcintosh. "Clialleuger" Auuol, p. 255. 



Body slightly tapering anteriorly, of about the same breadth 

 for a considerable part of the length, and posteriorly gradually 

 tapering to the tail-end. It measures about 250 mm. in length, 

 and about (î ram. in breadth at the end of the anterior third of 

 the length. 



The prostomium forms a short blunt cone, almost semicircular 

 in outline. Eyes 2, not visible unless the snout be bent down- 

 ward so as to expose the segment -junction. 



As is usual in the group, the first two segments are bare. 

 The anterior parapodia are small ; posteriorly they gradually 

 increase in size. At the lOtli parapodium the posterior lobe is 

 proi)ortionally large;, slanting abruptly downward and inward from 

 its somewliat straight upper border. At the oOth parapodium 

 the [)OSterior lobe more nearly apjn'oaches the anterior in size, and 

 \\\v l)i'is(les ])a:Ss out between the lobes. The anterior lobe is 

 rouiKJcd (loi'sally, wlicreas the posterior forms superiorly an angle 

 a lifllc less lliaii a right angle. The bristles are in about four 

 groiijis, Ml«' upper liaxiiig the longest, and the third the shortest 

 iips. A.II liaxc wings. ( )n the doi'snm near the base of para- 

 piuli;i is ;i \('r\ dislind juipilla. Tlie posterior hooks are strongly 

 wiiigcil "!■ gii;iii|cd. ;i cliafacleristic feature of Wm species (lig. 19). 



Tlic whole (jentai ;i|»pai'atus is of a deep blackish-brown color. 

 The iii;i\ill;ie do no( e\hi])it so luarlvcd an elevation at l)ase as is 

 usually seen in other species of the genus, and thus the anterior 



