35G dh. 13AIRD ON sevehal genera op eitnicea. 



Anterior feet with the fascicle of bristles all simple, lanceolate, 

 some, however, nearly double the length of the others ; and in 

 these feet no forcipate uncini, nor pectinate setsD, nor aciculoj are 

 to bo seen. In the feet, however, of the upper third of the body 

 the pectinate setae and the forcipate uncini make their appearance, 

 the pectinate seta) with the head straight, and all the teeth or pec- 

 tinations on the same plane, the forcipate uncini as in Nothria 

 and Onufhis, while the simple setge become more broadly lanceo- 

 late and limbate. The branchiae on this part of the body consist 

 of numerous branchlets or filaments, two stout branches at first 

 being given off", which very shortly divide again into others, which 

 again divide till there are about twenty filaments or branchlets. 

 The main stems of these branchiae are beautifully edged with 

 blunt, round-pointed cirri ; and all the branchlets or filaments ap- 

 pear as if beaded on their margins. The posterior feet retain tho 

 pectinate setao and uncini ; but the branchiffi are reduced (as in the 

 first two or three feet) to two simple filaments. 



llal. Madras, ^. Day, JEsq^. 



Genus IV. Nothbia, Johnston (s. str. Malmgren). 



Branchia) bipartite. Tentacular cirri placed on tlie dorsal part of 

 tho buccal segment. Tentacle, antenna), and palpi simple, not 

 annulated on any portion of their length. 



Sp. 1. NOTHBIA CONOHYLEGA. 



Onuphis conchylega, Sars, Beskr. off JaJctt. p. 61, tab. 10. f. 28 a-c. 



Onuphis Eschricbti, Oersted. Groenl. Ann. Dors. 20, tab. 3. f. 33-41 

 &45. 



Diopatra Eschrichti, Grube, Fam. Ann. 43 ; Quatrefages. 

 ■ Northia conchylega, Johnston, Cat. Non.-Parasit. Worms, 138. 

 ^Nothria *coachylega, Malmgren, Ann. Polych. Spetsberg. 66. 



Sab. Coralline region, British coast, Berwick Bay (Dr. John- 

 ston) ; Shetland Islands (J". Gwi/n Jeffreys) ; South Devon {J. 

 Granch) ; North Seas {Malmgren). 



G-enus V. Htalinceoia, Malmgren, Ann. Polych. Spetslerg. 67. 

 Northia, Johnston, Cat. Brit. Worms. 

 Branchia) reduced to one simple branchial filament. No teu- 



* For some critical remai-lis on the genus Nothria, see at the end of genus 

 Hyalincecia following. 



