KINNER and MAURER: POLYCHAETOUS ANNELIDS OF DELAWARE BAY 



species was reported as Amphicteis gunneri 

 floridus by Hartman in 1951 from Florida and as 

 Hypaniola grayi by Pettibone (1953) from Mas- 

 sachusetts and by Kinner et al. ( 1974) from Dela- 

 ware Bay. Wass (1972) listed the species as 

 Lysipiddes grayi from Chesapeake Bay and Zottoli 

 (1974) used the name Amphicteis floridus from 

 New Hampshire. Pettibone stated that this 

 species is distributed in estuaries from Maine to 

 Florida and the Gulf of Mexico. 



Amphictenidae (= Pectinariidae) 



Lucus and Holthuis (1975) showed that the 

 type-species of the well known generic name Pec- 

 tinaria Lamarck was confused and had to be re- 

 placed by Cistena Leach. Since the genus Pec- 

 tinaria is no longer valid, the widely used family 

 name Amphictenidae is now preferred to Pec- 

 tinariidae. The single east coast representative 

 should now be referred to as Cistena gouldii (Ver- 

 rill) new combination. 



Capitellidae 



Mediomastus ambiseta (Hartman) was a do- 

 minant species in the mussel and serpulid as- 

 semblages. Hartman (1947) described the species 

 as Capitata ambiseta from intertidal flats in 

 California. Hartman-Schroder (1962) later 

 synonymized Capitata with Mediomastus, and 

 Hobson (1971) reported it for the east coast of the 

 United States. The species has been reported as 

 a dominant species in Newport Bay, Calif., and 

 Baja California by Reish (1959, 1963) and in 

 Florida by Dauer and Simon (1975, 1976a, b). 

 Mediomastus californiensis has been reported 

 from North Carolina (Day 1973), but it differs 

 from M. ambiseta in a number of characteristics. 

 Mediomastus californiensis lacks a caudal process, 

 and spinous setae in posterior segments that are 

 represented in M. ambiseta, and has a different 

 positioning of the distal teeth of the hooked setae. 



Dorvilleidae 



According to a recent revision of the genera of 

 the family Dorvilleidae by Jumars (1974), the new 

 generic name Schistomeringos replaces Stauro- 

 nereis as used by Pettibone (1963a) and Wass 

 ( 1972) and Doruillea as used by Day ( 1973) for the 

 species Schistomeringos caeca and S. rudolphi. 



Protodorvillea gaspeensis, described originally 



by Pettibone ( 1961) from the Gulf of St. Lawrence, 

 was reported from Massachusetts by Hobson 

 (1971) and now from the midcontinental shelf off 

 Delaware. 



Magelonidae 



Two species of Magelonidae have been recorded 

 from Delaware and designated as Magelona sp. A 

 and Magelona sp. B. Meredith Jones is currently 

 revising this group and he informs us that 

 Magelona sp. B is near M. riojai (Jones 1963). 



Maldanidae 



In a revision of three species of Maldanidae from 

 the east coast of the United States, Mangum 

 (1962) included three species under Clymenella: 

 C. torquata (Leidy), C. zonalis (Verrill), and C 

 mucosa (Andrews). Day (1973) maintained the 

 genus Axiothella for C. mucosa; however, Man- 

 gum has pointed out that this separation, based on 

 the position of segmental collars, is not warranted 

 because of the presence of collars scattered 

 throughout the family. Clymenella zonalis was re- 

 ported by Day (1973) as Macroclymene zonalis. 

 The genus, Macroclymene, was originally erected 

 as a subgenus by Verrill for a specimen which had 

 a much larger number of segments than his type. 

 The subgenus was raised to generic status by 

 Hartman ( 195 1 ) for a fragment found in the Gulf of 

 Mexico. Mangum pointed to the great variation in 

 segmental number even within populations and 

 thus rejected Maroclymene. It has also been our 

 experience that numbers of segments vary. We 

 have found that juveniles particularly do not fit 

 the characteristic segmental numbers, and as a re- 

 sult, have used Clymenella spp. and Praxillella sp. 



Light (1974), in a comparison of Maldanidae 

 specimens from San Francisco Bay and the east 

 coast of the United States, followed Ardwidsson 

 and referred Verrill's species Maldane elongata to 

 Asychis ( including the synonymy). The species has 

 been reported from Chesapeake Bay by Wass 

 (1972) as Maldanopsis and from North Carolina 

 by Hartman (1945) and Day (1973) as Bran- 

 chioasychis americana Hartman. 



Orbiniidae 



In a study involving various growth stages of 

 Scoloplos armiger, Curtis (1970) has shown S. 

 acutus to be a juvenile form of S. armiger. The 



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