298 ANNELIDA POLYCH.ETA ANDREWS. 



Fau.ily TEREBELLID.E. 



AMPHITRITE (Miiller) Malmgreu. 

 Ampliitrite oruata Verrill. 



Terebella ornata Leidy. Mar. Invert. Fauna. Rhode Island and New Jersey.>Jour. 



Acad. Nat. Sei., '2ser.. vol. 3, p. 146. PI. xi, Figs. 44,45. 

 Amphitrite ornata Verrill. Invert. An. Vineyard Sd.. pp. 320,613, PI. xvi, Fig. 82. 

 Amphitrite ornata Webster. Aunel. Chiet. Virginian Coast, p. 62: Aunel. Chitt., 



Proviucetown, p. 732. 

 The specimens examined differ considerably from the northern form 

 in the shape of the nncini. to judge from the tigures given by Leidy ; 

 but not knowing the degree of accuracy of these figures nor the limits 

 of individual variation in these characters, I have referred the speci- 

 mens to A.ornnta. Common in soft mud near Crab Point; many sn)all 

 individuals occurred in mud tubes amongst hydroids, ascidians, etc., 

 upon the bottom of an old scow anchored in deep water. 



LOIMIA Malmgren. 



Loimia turgida, sp. nov. 



(Plate XIV, Figs. 46-49.) 



Body mpcli swollen anteriorly, slender posteriorly, smooth dorsally, 

 somites scarcely distinguishable. Tentacles longer than body in exten- 

 sion, in alcohol not reaching to sixteenth setigerous somite; much more 

 slender than the stem of the brauchiji?. Ventral shields nine, length 

 about equal ; breadth of the first about one half greater than that of the 

 ninth ; first one repn sents the ventral surface of the second, third, and 

 fourth somites and is indistinctly divided into two. The elevated region 

 formed by the shield is continued on the following six somites as a 

 series of folds, three to four for each somite, decreasing in width in the 

 same proportion as the shields. Lamella of the second to third somites 

 large, oblong. Some of the uncini bear six teeth instead of five, the 

 usual number. Anus surrounded by about ten blunt papilh^. Color 

 greenish-white, tentacles crossed by about fifty bauds of brown-red 

 pigment. Length, GO millimetres ; diameter, 4 millimetres ; tentacles, 12 

 millimetres; breadth of first shield, 3.7 millimetres: of ninth shield, 

 2.5 millimetres. Number of somites about ninety : setigerous somites 

 seventeen. 



The tentacles break off readily in alcohol, being attached by means of 

 a small swollen area, below which is a similar but smaller process beyond 

 the end of the ventral groove, so that the broken off' tentacles have the 

 appearance of being cleft or bilobed at the end. Found under stones 

 along the shore. 



LEPRJBA Malmgren. 



Leprsea rubra Verrill. 



Verrill. Invert. An. Vineyard Sd. , pp. 3;'2, 615, 616. 

 Webster. Annel. Chst. Virginian Coasr. p. 63. 



Collected upon oyster shells near Horse Island. 



