1885.1 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 427 



Amphiuome Lepadis ■Vorvill, sj). nov. 



Verrill, Traus. Conn. Acad., vol. iv, pi. 23, fig. 3. 



Body stout, aj)pearing squarish, broadest in the middle, tapering both 

 ways, convex above. Head small, slightly bilobed in front. Caruncle 

 cordate, as seen from above, with thickened edges, the emargiuation in 

 front at the origin of the middle antenna; two front antennaB orange, 

 directed forward, tapered, subacute, about equal in size and length to 

 the median, and about equal to the breadth of the head, or buccal seg- 

 ment, two lateral antennae stouter, rather shorter, bent downward. Two 

 first setigerous segments have no gills, but below the setae in each ramus 

 is a cirrus; the upper ones are like the antennae in size and length, and 

 as long as the setae ; ventral ones smaller, tapered, all orange, with pale 

 tips; setae white, brittle. Branchiae begin on the third setigerous seg- 

 ment. They are large and finely arborescently branched ; color deep 

 brown, with orange tips; stems short, dark brown. Back dark pur- 

 plish brown, with bluish luster. 



The largest specimens are TO^""^ to 100'"'^ long; 12™'" broad. 



Taken on floating timber in the Gulf Stream, among goose-barnacles 

 {Lepas). In confinement it continually crawled in and out of Teredo 

 burrows. 



Leodice Benedict! Verrill, sp. nov. 



This species somewhat resembles L. polybranchia, but is more slender 

 in form, much less thickened anteriorly. It has much fewer branchiae, 

 which do not extend to the middle of the body. The superior antennae 

 are much longer and more slender. The buccal segment is much smaller 

 and shorter. 



The body is moderately large, not very stout, broadest along the an- 

 terior third, narrowing toward the head and gradually tapering toward 

 the tail. The anterior segments, back to about the eighth, are strongly 

 convex dorsally, while those which succeed are depressed and broader. 

 The segments along the middle and jiosterior regions of the body are 

 more elongated than the anterior ones, but the latter are not so short 

 and crowded as in L. polybranchia. The branchiae commence on the third 

 body-segment, as simple slender cirri, and become pectinate on the fifth; 

 they occur on about thirty segments. The anterior ones are pectinate, 

 with about six long, slender papillae; farther back, on the eighth seg- 

 ment, they become much larger, in length being equal to about one-half 

 the breadth of the body, and bear twenty or more long, slender, taper- 

 ing papillae. The head is short, thick, and slightly bilobed or emarginate 

 in front. It bears five slender tapering antennae, of which the median- 

 dorsal and outer-lateral ones are much shorter than the superior-lateral 

 pair. The latter, when turned back, reach to about the tenth body-seg- 

 ment ; they are very long, slender, and delicately tapered. The median 

 antenna, in the specimen examined, is about equal in length to the outer 

 lateral, and is not more than one-eighth the length of the superior lat- 



