Harrimania Ritter, 1900

Deland, C., Cameron, C. B., Rao, K. P., Ritter, W. E. & Bullock, T. H., 2010, A taxonomic revision of the family Harrimaniidae (Hemichordata: Enteropneusta) with descriptions of seven species from the Eastern Pacific, Zootaxa 2408 (1), pp. 1-30 : 5

Genus Harrimania Ritter, 1900

Type species. Harrimania maculosa Ritter, 1900

Diagnosis. Proboscis conical, a little longer than broad; collar broader than long. Longitudinal muscles of proboscis arranged in radial plates ( Fig. 1 B ). Genus often characterized by two proboscis pores. Intestinal pores and peribuccal cavities absent. Cornua very long, extending into trunk in H. maculosa Ritter, 1900 and H. planktophilus Cameron, 2002 , also forming parabuccal ridges on either side of buccal cavity in collar. Both dorsal and lateral gonads can be present, occurring as simple sacs arranged in long rows. Dorsal gonads, when present, confined to branchial region.

Remarks. Three species from this genus are currently described, two of which are from the Eastern Pacific region, H. maculosa and H. planktophilus . Based on the diagnosis given above, we should now reassign Saccoglossus borealis Okuda & Yamada, 1955 to this genus because of its great resemblance to H. planktophilus in having a radial proboscis musculature, a broad collar, a left proboscis pore, lateral gonads, parabuccal ridges and the absence of peribuccal cavities.

Figures

FIGURE 1. Light micrographs of transverse sections of the proboscis of: A, Saccoglosus pusillus, showing the arrangement of the proboscis longitudinal musculature in concentric rings. B, Protoglossus mackiei n. sp., showing the arrangement of the proboscis longitudinal musculature in radial plates. C, Mesoglossus macginitiei n. gen. et n. sp., showing the diffuse arrangement of the proboscis longitudinal musculature. Abbreviations: plm, proboscis longitudinal muscles. Scale bars = 500 µm.