107 
20. Holophryxus Richardi Koehler, Buli. Inst. Océanogr. Monaco, No. 
196,1911, p. 23—26, lig. 15—17; — see also No. 83-a., p. 108. 
Holophryxus sp. (H. Richardi Koehler?) see No. 83-b., p. 109. 
21. Holophryxus Acanthephyræ n. sp., see Nr. 84, p. 112. 
22. Arthrophryxus heringianus Richardson, Proc. U. S. Nat. Mus. vol. 
33, 1908, p. 694—96, fig. 6—7. 
Length 14 mm. On Eucopia australis. Bering Island. 
23. Colophryxus novanglice Richardson, Proc. U. S. Nat. Mus. vol. 34, 
1908, p. 391—92, hg. 1—3. 
Length 5 mm. Long Island. Host unknown. 
24. Prophryxus alascensis Richardson, Proc. U. S. Nat. Mus. vol. 37, 
1909 (1910), p. 124, lig. 47—48. 
Length 2,3 mm. Alaska. Host unknown (a Schizopod ?). 
25. Allophryxus ruber Koehler, Buil. Inst. Océanogr. Monaco, No. 196, 
1911, p. 10—16, fig. 8—12. 
Length 6,5 mm. 43° 04' N, 19° 42' W, 0—1500 m.; 46° 
31' 20“ N, 5° 13'AV, 0—1750 m. Host unknown. 
The male is known in the following species. 
Dajus mysidis. 
Notopliryxus ovoides. 
Aspidophryxus peltatus 
frontalis 
Heterophryxus appendiculatus 
Branchiophryxus nyctiphance (no lig.) 
— Caulleryi 
Prodajus ostendensis 
Zonophryxus retrodens 
Holophryxus californiensis 
Arthrophryxus heringianus 
Colophryxus novanglice 
Allophryxus ruber 
The larva is known in the following species. 
Dajus Mysidis 
Notopliryxus ovoides 
Asjndophryxus peltatus 
frontalis 
Branchiophryxus nyctiphance (no fig.) 
— Caulleryi 
Prodajus ostenclensis 
Holophryxus Acanthephyræ (see p. 115, fig. 
19—21.) 
Besides these H. J. Hansen in Ergebnisse d. Plankton-Exp. 
d. Humboldt-Stiftung, vol. 2, G, c, 1895, p. 22—27 and p. 45—46, 
PI. 2, figs. 3—6, PI. 3, figs. 1—2, has described 6 lavvæ of unknown 
species and states that Dr. v. Schab has two not-described larvæ 
from the Guinea-coast. 
