16 L Canadian Arctic Expedition, 1913-18 



COPEPODA OF UNCERTAIN POSITION. 



Psilomallus hippolytes Kr<^yer. 



Psilomallus hippolytes, KR(^yer, H. "Snyltekrebsene." Naturhistorisk 

 Tidsskrift, ser. 3, vol. 2, 1863, p. 336; pi. 17, fig. 10. 



From a crustacean called by Kr^yer Hippolyte aculeata (0. Fabricius), 

 and by Stephensen (1913) Spirontocaris groenlandica (J. C. Fabricius), on the 

 Greenland coast. 



With the meager description and the single figure given by Kr</)yer it is 

 impossible to locate this species anywhere with certainty. It is even doubtful 

 whether it is a true copepod. 



Tanypleurus alicornis Steenstrup & Lutken. 



Tanypleurus alicornis, Steenstrup, J. & Liitken, Ch. "Snyltekrebs og 

 Lernaeer." Kongl. Danske Vidensk. Selsk. Skrifter, ser. 5, vol. 5, 1861, 

 p. 425; pi. 15, fig. 38. 



From the gills of Cyclopterus spinosus Miiller, and the mouth of Somniosus 

 microcephalus (Bloch), Greenland sharks. 



This species was not definitely located by Steenstrup & Lutken, but Bassett- 

 Smith in 1899 placed it in the Chondracanthidse. It cannot possibly belong 

 there if the original description is correct, for its attachment apparatus consists 

 of two stalks or arms, separate or fused, joined at the tips with a cirrhose bulla. 

 If these arms correspond to the second maxillae the species must belong to the 

 Lernaeopodidae, but until this can be determined we must leave it unlocated. 



