MAUITA NANS. 137 



The prehensorial processes of the proboscis project conspicuously from the 

 mouth in the type. Each is swollen proximally, but is elsewhere slender. Length 

 near 3.7 mm. (Plate 25, fig. 2). 



The first two somites are coalesced. The combined segment is short on 

 the ventral side, where it is crossed longitudinally and sublongitudinally by 

 numerous fine sulci. It widens laterally, extending forward on each side and 

 coming in contact with the eye, thereby making the free anterior ventral border 

 widely concave. Dorsally the segment is again short. On each side at the 

 ventral level and close to the eye is borne the tentacular cirrus pertaining to 

 the first somite. Caudad of this on each side is the cirrus of the second somite. 

 This greatly exceeds the first one in size. It is flattened, the direction of the 

 flattening being a little oblique to the longitudinal axis of the body, but the 

 cirrus not so thin as the ordinary cirri ; flat on the caudal surface, but somewhat 

 convex on the anterior; in outline somewhat broadly linear lanceolate. The 

 cirrophore is distinct, but short. 



The third somite is wholly distinct from the contiguous ones. It is longer 

 ventrally and dorsally than the preceding composite ring, but laterally it is 

 decidedly shorter. Each third tentacular cirrus is attached a little farther 

 mesad than the second one. It is decidedly smaller than the second, but longer 

 than the first, is conical in form and has a distinct, short, and broad cirrophore. 

 In the type the body is narrowest at the tenth somite from where it widens 

 cephalad to the fourth somite and then is again somewhat constricted. It 

 widens caudad to near the twenty fifth somite and thereafter is parallel-sided 

 to near the end of the fragment. The two fragments that lack the prostomium 

 and caudal somites are also parallel throughout. The somites are dorsally 

 convexly arched. Each is typically divided above by a transverse sulcus into 

 two primary divisions, each of which is again subdivided by weaker sulci into 

 mostly two or three minor annuli. The venter shows a distinct neural furrow. 

 The tenth somite is three times wider than long, the somites in the wider middle 

 region of the body maintaining nearly the same proportion. 



The fourth somite, very short like the preceding ones, bears parapodia 

 represented chiefly by a large, foliaceous, broadly oblong or subovate dorsal 

 cirrus with its distal end obliquely truncate. The neuropodiima proper is a 

 very slight tubercle. The style of the ventral cirrus is a foliaceous, rather 

 broadly lanceolate, appendage attached to a short, rounded cirrophore that 

 appears like a rounded tubercle when the style is lost. The parapodia of the 

 fifth and succeeding somites are fuUy developed. In a typical parapodimn of 



