70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 128 



The eye, which is reddish brown in alcohol, is situated in an oval, 

 bulging area. The mesosome segments (with the exception of the 

 seventh) bear on the lower margin an angular projection. The first 

 coxal plate is produced into a long, narrow, pointed process. The 

 second coxal plate bears a pointed process at the lower front and 

 hind corner and a round knob in the middle. The third to seventh 

 coxal plates bear a pointed or angular process on the lower margin. 

 Gnathopod i, sixth joint with a very short, nearly transverse palm. 

 Gnathopod 2, second joint with the lower front corner produced into 

 an angular process ; sixth joint bearing 2 sharp angular processes ; and 



Fig. 20. — Dulichia arctica Murdoch. Male. Entire animal. 



seventh joint bearing on its lower margin a prominent tooth or tuber- 

 cle near the hinge and a lower, broader tubercle toward the apex. 



Peraeopods i and 2 short and slender; second joint very little 

 expanded. Peraeopods 3 to 5 rather short with second joint scarcely 

 at all expanded. Peraeopod 5 longer than 3 or 4. The coalesced first 

 and second urosome segments shorter than uropod i. 



The figure given by Murdoch was of a smaller male, which did not 

 possess fully developed characters. Dulichia arctica reaches a length 

 of at least 20 mm., and it has been taken as low as 75 m. 



PARADULICHIA, species 



Material collected. — Washed ashore at Point Barrow base, Au- 

 gust 21, 1949, I specimen. Beach at Point Barrow base, Septem- 

 ber 28, 1950, No. 528, I specimen. 



These 2 male specimens, measuring about 9 mm. each, are not in a 

 sufficiently good state of preservation for describing or figuring. 



