THE PANDALID@ Zod 
in the arctic fiords of Norway. Lastly, Bell’s Hippolyte 
Thompsont belongs to a different family, having been 
identified with Rathke’s Pandalus brevirostris. 
Nauticaris, Merhippolyte, and Amphiplectus, are said by 
Spence Bate to differ from most of the other genera in the 
family by having a series of arthrobranchize which are 
elsewhere wanting, Chorismus, however, having a single 
pair. 
Cryptocheles pyqmea, Sars, is only half an inch long, 
and owes its specific name to its small size, but the generic 
name, meaning ‘with concealed chelz,’ refers to the un- 
usual circumstance that in the first trunk-legs the chelz 
are so small as to escape notice altogether without close 
inspection. This little species, found between 120 and 
300 fathoms off the coast of Norway, brings forth its 
young in a condition to require no special metamorphosis. 
Bythocaris resembles Cryptocheles in hatching the 
young with their full number of appendages, and in in- 
habiting very considerable depths. ‘To this. genus are now 
referred Hippolyte Payeri, Heller, and Hippolyte Panschi, 
Buchholz, besides the type species Bythocaris simplici- 
rostris, Sars, Bythocaris nana, S. I. Smith, and a new one 
obtained by the Norwegian North Atlantic Expedition 
from 1,110 fathoms between Jan Mayen and Finmarken. 
All the species are northern or distinctively arctic, and 
the last, Bythocaris leucdpis, Sars, is large and beautiful, 
being nearly four inches long, and in colour a magnificent 
rosy red. 
Family 4.—Pundalide. 
The rostrum is long and slender, more or less abund- 
antly armed with teeth or spines. The eyes are well 
developed. The mandibles have a two- or three-jointed 
palp. The first pair of trunk-legs are not chelate, the 
second pair are chelate. The pleopods are biramous, the 
tail-fan is well developed and strong. 
In this family Spence Bate discriminates seven genera. 
In two of these, Chlorotécus, A. Milne-Edwards, 1882, and 
Dorodétes, Spence Bate, 1888, he states that the second 
