NO. 1 hartman: goniadidae, glyceridae, nephtyidae 73 



The essential parts consist of a fleshy elevation that terminates in a 

 pore. A capelike vestment completely surrounds the basal part but 

 leaves the distal part more or less free. At its lower base the cape is 

 pouchlike; distally it is flaring, especially when its delicate membranes 

 have become partly frayed or split. When perfect, its margin is entire 

 but its inner surface shows fine, longitudinal striations (figs. 5, 6). Slide 

 preparations under cover slips usually cause the sheath to fold so that 

 its pouched lower portion is turned unnaturally to one side. Oil im- 

 mersion views tend to reveal only optical sections, so that 3-dimensional 

 relations are not easily interpreted. The fleshy organ has an internal 

 canal that leads to one or a few large, clear basal cells in which there 

 are numerous, small dark inclusions. The axial cells are not seen in 

 unstained materials. 



G. convolute. Keferstein is not easily separable from G. alba (Mul- 

 ler) ; differences that have been described are not too convincing, thus, 

 those that concern the ailerons of the paragnaths and the comparative 

 lengths of the branchial processes. It is further likely that G. basi- 

 branchia Chamberlin (1919b, p. 14) from southern California, is the 

 same as specimens here designated G. convoluta, although earlier I 

 (Hartman, 1936, p. 32) referred the name to G. alba (Miiller). Fauvel 

 (1923, p. 385) and others have noted the close relations of these 2 

 species. 



A collection from San Pedro, California, reported as G. alba 

 (Treadwell, 1914, p. 198), and another as G. longipinnis (Treadwell, 

 1914, p. 198) from the same locality, have been examined and are be- 

 lieved to be G. convoluta Keferstein; they are now deposited in the 

 Allan Hancock Foundation. 



Distribution. — This species was originally described from southern 

 Europe but has since been recorded from California (Hartman, 1940, 

 p. 247) ; its range is here extended to Lower California, Mexico north 

 to Monterey Bay, California. It occurs in shallow depths to about 25 

 fms. 



Glycera americana Leidy 



Leidy, 1855, pp. 147-148, pi. 11, figs. 49, 50. 



?(?. cirrata Grube, 1856, p. 176. 



G. corrugata Baird, 1863, p. 109. 



G. peruviana Quatrefages, 1866, pp. 177-179. 



G. jucunda Kinberg, 1866, p. 245. 



G. laevis Kinberg, 1866, p. 245. 



