38 RATHBUN 
PANDALUS GONIURUS Stimpson. 
Plate 1, fig. 3. 
Pandalus goniurus STIMPSON, Proc. Acad. Nat. Sci. Phila., x11, 36 [105], 
eee MuRDOCH, Proc. U. S. Nat. Mus., VII, 519, 1884; Marine 
Invertebrates, in Rept. International Exped. to Pt. Barrow, Alaska, 141, 
pl. 1, figs. 2-2c, 1885. RATHBUN, The Fur Seals and Fur-Seal Islands 
of the North Pacific Ocean, Pt. 111, 557, 1899. 
Allied to P. dorealis. Rostrum one and a half times as long as cara- 
pace, terminal half ascending, posterior half horizontal; armed above 
with 8 to 9 movable spines, including 3 on carapace; the anterior spine 
behind middle of rostrum, the posterior spine in front of middle of 
carapace; lower limb deeper in front of eye than in P. dorealis, and 
armed with 6 or 7 immovable spines; tip bifid, upper tooth smaller. 
Antennular flagella shorter than in P. dorealis, the inner and longer 
one being one and a half times as long as carapace. The spine at the 
antero-lateral angle of the antennal scale extends nearly to the end of 
the blade. Antennal peduncle falls a little short of end of second joint 
of antennular peduncle; flagellum nearly as long as body. 
Carpus of right foot of second pair divided into 18 to 20 articles; the 
left foot nearly one and a half times the right and with 51 to 54 articles. 
The third segment of the abdomen possesses a lobe as in P. borealis, 
but the lobe is blunt, not sharp; the median line in front of the lobe is 
nearly horizontal; the posterior margin is only slightly produced back- 
wards at its middle; and it, as well as the fourth segment, is devoid of a 
median spine. ‘The sixth segment is a little shorter than in P. dorealis, 
seventh segment bears 5 to 6 lateral spinules. 
Otherwise as in P. dorealis. 
Sometimes occurs with P. Jorealis, though an inhabitant of shallower 
water. They are easily distinguished by the presence of spines on the 
anterior half of the top of the rostrum in P. dorealis and the absence of 
the same in P. goniurus; and by the blunt rather than sharp lobe on the 
third abdominal segment in the last-named species, as well as the 
absence of median spines from the posterior margin of the third and 
fourth segments. 
Dimensions.—Large female: Length go mm., length of carapace and 
rostrum 41.5 mm., of rostrum 25.2 mm. 
Distribution —Ranges from the Arctic coast of Alaska southward to 
Okhotsk Sea on the one side and Puget Sound on the other, in 3 to 100 
fathoms. Its occurrence below so fathoms is exceptional. 
Taken by the Albatross at the following localities; 
