1901.] NATURAL SCIENCES OF PHILADELPHIA. 167 



The ovigerous male of Station 39 agrees in all essential points 

 with P. hispida as figured by Wilson. The two females, however, 

 show the chela? of the mandibles (antennae) as figured by Wilson 

 for P. diseoidea (1880, fig. 106), and the rostrum is more obtuse 

 than in the male, which is another diagnostic character assigned 

 to diseoidea. In the shape of the end of the abdomen I do not 

 find any difference; all three individuals have it obtuse, and not 

 pointed and slightly bifid. 



In my opinion P. hispida is not different from diseoidea, but 

 represents merely the male sex. 



Distribution. — Maine, Grand Manan (12-55 fathoms), South 

 Greenland, North Norway, Lapland, White Sea. 



In conclusion I add here a list of species recorded previously 

 from the northern parts of Baffin Bay and Smith Sound, but not 

 found by our expedition in the same latitudes: 



1. Balanus erenatus Brug. Grinnell Land: Discovery Bay 



(Miers, Joum. Linn. Soc. Zool., Vol. 15, 1881, p. 73). 



2. Balanus balanoides (L. ). Port Foulke (Stimpson) (possibly 



seen by the present writer at Foulke Fjord). 



3. Orchomenella minuta (Kr.) . North Greenland: Cape Dudley 



Digges, and Ellesmere Land: Cape Faraday (Ohlin). 



4. Anonyx affinis Ohl. Cape Dudley Digges (Ohlin). 



5. Hoplonyx cicada (Fabr.) = Anonyx gulosus Kr. Grinnell 



Land: Discovery Bay (Miers). 



6. Ampelisca eschrichti Kr. North Greenland : Murchison Sound 



(Ohlin). 



7. Haploops tubicola Lilj. North Greenland: Cape Dudley 



Digges (Ohlin). 



8. Acardhostepheia malmgreni (Goes). Murchison Sound 



(Ohlin). 



9. Eusirus cuspidatus Kr. Grinnell Land: Franklin Pierce 



Bay (Miers). 



10. Apherusa glacialis (Hans.). North Greenland: Wolstenholme 



Sound (Ohlin). 



11. Paratylus smitti (Goes). Murchison Sound (Ohlin). 



12. Amathila homari (Fabr.). North Greenland Cape Dudley 



Digges, Northumberland Island; Ellesmere Land: Cape 

 Faraday (Ohlin). 



13. Neohela monstrosa (Boeck). North Greenland: Murchison 



Sound (Ohlin). 



14. Caprella monocera Sars. Cape Dudley Digges (Ohlin). 



