MUSEUM OF COMPARATIVE ZOOLOGY. 200 
As in the last species, there is a tubular organ near the middle of the fourth 
joint of each leg; but this is relatively six or eight times as long as in the for- 
mer, and has the appearance of a long, blunt spine. 
Color nearly white. 
Length of body (without rostrum) . . . . . . . . . . 6.0mm. 
ES ก ณ์ a a ba x 9. o ร T 
9) อ op 4 แล จ ค ร งา p ong ม 4 NOS 
One male (with egg-mass) and one female specimen from locality 891, 
N. Lat. 39? 46', W. Long. 71? 10/, 500 fathoms, mud and fine sand. U.S. 
F. C. 1880. 
It seems possible that a larger series may show the two forms described 
to be only varieties of the same species. But so far as shown by the speci- 
mens at hand (which are adult) they appear perfectly distinet, the most 
striking points of difference being in the “antenna,” rostrum, oculiferous 
segment, and especially in the armature of the propodus, which is character- 
istic and pretty constant. There is also a marked difference in the length 
of the glandular duct of the fourth joint of the legs. 
Nymphon grossipes (L.), Cur. FABR. 
A single specimen from locality 306, N. Lat. 41° 32 50", W. Long. 65° 55', 
524 fathoms, which extends its known range of depth more than 100 fathoms. 
It is of the variety described by Kréyer as Nymphon mixtum, the tarsus being 
much longer than the propodus, and the oculiferous segment long and slender. 
The oculiferous tubercle is not much elevated, and the auxiliary claws are 
rather large. Ocelli are well developed. Color nearly white. 
Length of body (including rostrum, ete.) . . . . . . . 80mm. 
เล 80 ว 3 ว ง ล: ็ 1. ๐ ฝ 0[. 
Nymphon Strémii, Kroyer. 
Hight specimens (of which three are males with eggs) from locality 306 (with 
last species), one specimen from 310, N. Lat. 39° 59 16", W. Long. 70? 18’ 30", 
260 fathoms. 
The greatest depth previously recorded for this species is 115 fathoms ; its 
range is thus extended downwards more than 400 fathoms. The specimens 
are in every respect typical, but are not of unusually great size for the species, 
as shown by the measurements (from an average male specimen). 
Length of body (including rostrum, eto.) A AOS HO 
A ง 1 606... 8: tt 
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