Polychoetous Annelids from Florida, Porto Rico, Bermuda, etc. 261 



as the head, their middle third pigmented. On the type there remained one 

 ventral tentacular cirrus, slender and extending to about the middle of the palp, 

 with a median and terminal pigment patch ; all other tentacular cirri were lost, 

 as were most of the dorsal cirri. Those dorsal cirri remaining were slender, 

 gently tapering to the apex, more or less pigmented for the terminal half, but 

 with a subteraiinal white patch. The anal cirri are larger than the dorsal 

 and entirely pigmented. 



The elytra are very similar in character throughout the body, with an 

 entire margin and without papillae; they are transparent, so that although they 

 overlap, the pigment of the under one shows through the upper and gives the 

 impression of a continuous line. 



The notopodium of the first parapodimn is thicker than the neuropodium 

 and extends about half as far from the body. It bears from the bottom of an 

 oval terminal depression a tuft of heavy setae, of which the ventralmost are 

 especially large (plate 2, fig. 1). The acicula extends into a conical expansion 

 ventral to this depression. 



Neuropodium much wrinkled, its dorso-anterior angle prolonged into a 

 conical process; it carries a single acicula and large setae. The ventral cirms 

 is large, equal in size to the dorsal cirrus of the second parapodium ; its elytron 

 was broken from the specimen figured, only its ceratophore being represented. 



The second parapodium has a less developed notopodium than the first, 

 but the setae in the two are very similar. Neuropodium more conical than in 

 the first, with a finger-shaped process at end of antero-dorsal lobe. Ventral 

 cirrus two-thirds as long as the neuropodium, the dorsal cirrus longer than the 

 parapodium, tapering gradually to the apex. 



Toward the posterior end (plate 2, fig. 2) of the fifteenth from the posterior 

 end the ventral cirri become very small, while an anterior lobe appears in 

 the notopodium. In other respects the parts of the parapodium have a 

 relative form much as anteriorly, and the very large setae continue in the 

 notopodium. 



The large setae of the dorsal tuft vary much in size, but the ventral ones are 

 largest. They have a striated axis, which terminates in a blunt point and 

 show traces of rows of minute teeth along the shaft. The apices were invar- 

 iably covered with a thick brownish incrustation, which made it impossible 

 to determine their exact fomi. The setae of the ventral bundle (plate 2, 

 fig. 3) with long tapering shaft and a subterminal tooth at some distance 

 below the apex. The expanded portion of the seta with numerous rows of 

 very minute teeth, apparently extending entirely around it, but larger on the 

 convex surface; these stop at the subterminal tooth. 



Type in American Museum of Natural History. Cotype in the Yale Uni- 

 versity Museum. 



Pontogenia maggiae Augener. 



Pontogenia maggiw Augener, 1906, p. 103. 



A single specimen, dredged July 19, 1915, south of Loggerhead Key, agrees 

 closely with Augener's description, though if his figure of the head is accurately 

 drawn his specimen was poorly preserved. While there are lateral lobes as 

 he figures, they are not as deeply incised as is shown in his figure and they 

 are carried on the dorso-lateral surface, so that the head is broadest at its 

 junction with somite 1. The median tentacle is shorter than the dorsal cirrus 

 and very delicate. Each eye-stalk carries dorsally a small eye, and antero- 

 ventrally a much larger one, somewhat as in Ehlers's Pontogenia sericoma 

 (Ehlers, 1887, plate 7, fig. 2), but unlike that species these are carried on prom- 

 inent stalks. Brown papillae verj^ abundant over the entire ventral surface. 



