Protula atypha Bush, 1905

Bastida-Zavala, J. Rolando, 2008, Serpulids (Annelida: Polychaeta) from the Eastern Pacific, including a brief mention of Hawaiian serpulids, Zootaxa 1722, pp. 1-61 : 35-37

Protula atypha Bush, 1905

( Figures 8D–G)

Protula atypha Bush, 1905: 228–229 , pl. 37, figs. 1–2, 4. Type locality: Pacific Grove , California, USA.

Protula atypha .— Hartman, 1969: 767–768, figs. 1–3, California, USA.

Material examined. Nine specimens: Hawaii ( USA), UMAR-Poly 84, 1 spec. plus one empty tube (HIHF- 008, floating dry-dock towed to Hawaii in Dec., 1999, from San Diego, specimen. collected two days after arrived to Hawaii, coll. SG). California ( USA), LACM-AHF s.n. (33º23’4–30”N, 118º19–21’W, 1.6 km east of Willow Cove, Santa Catalina Island, Velero III, sta. 1403, Blake trawl, sand, sea urchins, 68–100 m, Sept. 13, 1941); LACM-AHF N8846, 3 spec. (approx. 33º18–28’N, 118º18–36’W, Ballast Point, Santa Catalina Island, sta. XXXV-a, 12–60 m, recorded in Treadwell 1914: 226); LACM-AHF N8847, 2 spec. (approx. 33º41–42’N, 118º16–18’W, off San Pedro, sta. XII, 80–290 m, recorded in Treadwell 1914: 226). Baja California ( Mexico), LACM-AHF s.n., 2 spec. (28º12’5”N, 115º33’20”’W, off San Benito Island, Velero III, sta. 1010, fine green sand, 142–190 m, Aug. 20, 1939).

Diagnosis. Tube white, thick-walled, smooth, sometimes with shallow transversal ridges, lacks longitudinal ridges, peristomes or alveoli. Branchial crown with 31–51 radioles per lobe ( Fig. 8G); interradiolar membrane one-fifth of radiole length. Without operculum and opercular peduncle. Thoracic membrane extends to last thoracic chaetiger, narrow. Collar and thorax with hooded (limbate) chaetae. Abdomen with geniculate chaetae ( Fig. 8F). Thoracic and abdominal uncini apparently without teeth ( Figs 8D–E). Dorsal caudal gland present.

Habitat. Depth: 12 to 290 m. In shelf depths on soft bottoms. Occasionally intertidal (as fouling species).

Distribution. Temperate Eastern Pacific. Hawaii, California ( USA) to Baja California ( Mexico) ( Hartman 1969).

Remarks. One specimen (LACM-AHF, sta. 1010) has an unknown parasite in the right branchial lobe ( Fig. 8G).