NO. 3 POLYCHAETOUS ANNELIDS 9 



Family Aphroditidae 



Hermione hystrix Savigny 



Fauvel, 1923, pp. 35-36, fig. 11. 



H. kinbergi Augener, 1906, p. 99. 



Melaenis tropicus Tread well, 1934, pp. 1-2, pi. 1, figs. 1-6; 1939, p. 182. 



H. tropicus Hartman, 1938, p. 127. 



Collection.— A 13-39 (1). 



The single specimen is 25 mm long by 10 mm wide and consists of 30 

 setigers. It is pale save for dark brown setae. There are only 13 pairs of 

 elytra; it is probably immature. 



Earlier, Melaenis tropicus Treadwell, from the West Indies, was re- 

 ferred to the genus Hermione (Hartman, 1938, p. 127) ; it is herein con- 

 sidered identical with the older H. hystrix. 



Distribution. — In warm waters of both hemispheres. 



Family Polynoidae 



Halosydna leucohyba (Schmarda) 



Polynoe leucohyba Schmarda, 1861, pp. 153-154, 5 figs. 

 Polynoe pustulata Mcintosh, 1885, pp. 115-116. 

 Polynoe granulata Ehlers, 1887, pp. 50-51, pi. 11, figs. 2-7. 

 Polynoe brevisetosa Treadwell, 1902, p. 186 (not Kinberg). 

 Hartman, 1938, p. 110. 



Collections.— A 12a-39 (1) ; A 20-39 (10) ; A 25-39 (1) ; A 30-39 

 (2). 



Color variations range from iron gray to pale rust. In one specimen 

 there are large flat pustules on elytra, ranged in an irregular row along 

 the posterior margin of anterior pairs. 



Distribution. — ^West Indian regions; the commonest polynoid in in- 

 tertidal zones. 



Lepidonotus humilis Augener 



Augener, 1922, p. 40; 1933, pp. 194-195. 



Collections.— A 12-39 (2) ; A 25-39 (1). 



The collections include mature individuals of both sexes. A complete 

 male is 11.5 mm long, 3.75 mm wide, and consists of 26 setigers; it is 

 white in the posterior half. An adult female is 10 mm long, the posterior 

 half dark green because of crowded ova. They are present from the ninth 

 setiger to near the end. Elytra are strongly fringed at the outer lateral 

 edge; their surface is marmorated and provided with many small flat- 

 headed, or irregularly topped, papillae. Distal ends of notopodia and 



