CALLIOPiEA. 249 



^olis gymnota. 



Plate XVI. Figs. 238-241. 



Animal small, tapering to a fine point, watery white ; tentacles short, the pos- 

 terior pair minutely serrated ; branchiie in seven lateral clusters of about five 

 each, slightly club-shaped, having a reddish-brown centre. 



Eolis (Tergipes, Cuv.) fji/mnota, Couthouy, Best. Journ. Nat. Hist. ii. 69, pi. 1, fig. 3. 

 IJo/idia (ifimnota, De Kay, N. Y. Moll. 10, \A. 5, fig. 97 (1843). 

 ^Eolis (/i/innota, Stimpsox, Check Lists, 4.(1860). 



Body slender and tapering to a very fine point, of a pale, watery 

 drab color ; lioad small, rounded, with a distinct neck ; mouth 

 small ; dorsal tentacles short, linear, truncated, with very fine 

 wrinkles or serratures at the sides ; oral tentacles rather longer, 

 pointed. Foot transparent, as wide as the body, anterior angles 

 rounded. Branchife short, slightly enlarged towards the tip, pale 

 straw color, very trans[)arent, enclosing the reddish-brown or um- 

 ber-colored glandidar body, which gives the general color to the 

 whole ; they are arranged in seven pairs of clusters of al)out five 

 each, along the lateral margins, leaving a large portion of the back 

 exposed, the second and third pairs rather longer than the others ; 

 the branchias are usually carried spreading outwards rather than 

 folded over the back. Length, about an inch ; breadth, one tenth 

 of an inch. 



Found in Charles River, near Craigie's Bridge, Boston ; at 

 Warren Bridge, about the roots of Tubularia, October and 

 November, 1847 (^Coiithoiiy^. 



This species, which thus far seems to be rare, is nearly 

 allied to J^. concinna, Alder and Hancock. In that species 

 the branchiae are fusiform and white-tipped, and have a pe- 

 culiar satin lustre. The dorsal tentacles are longer than 

 the oral. It seems to be a sluggish species. The ova are ^luiJfa, 

 deposited about the roots of Tubularia in vermiform masses ; Couthouy. 

 four or five bunches are laid by an individual. They are laid in 

 November. 



Genus CAL,L,I0P.I:A, D'Orbigny. 1837. 



Head without tentacles ; labial feelers very long and tapering. 

 Gills pyriform, placed in longitudinal lines. Front of foot an- 

 gular. 



