xo. iTOl. 



NORTHWEST PACIFIC IS0P0D8— RICHARDSON. 



110 



P^imily MUNNOPSID^. 



Genus MUNNOPSIS M. Sars. 



MUNNOPSIS LATIFRONS Beddard. 



Miinnopsis latifrons Beddard, Proc. Zool. Soc. Loudon, 1885, pt. 4, p. 917; Chal- 

 lenger Report, vol. 17, 18SG, p. 50, pi. 10, figs. 1-4. 



Loealities.— Station 5082, off Omai Said Light (20 to 40 miles dis- 

 tant), N. 22° E., 33 miles (lat. 34° 5' N. ; long. 137° 59' E.) ; station 

 4919, about 90 miles WSW. of Kagoshima Gulf, Eastern Sea, at 

 Kiisakaki Jima, N. 18° E., 17.G miles (lat. 30° 34' N.; long. 129° 19' 

 30" E.). 



Beddard's specimen was from off Ino Sima 

 Island, Japan. 



Depth.— Six hundred and sixty-two fathoms 

 in green mud, fine sand, and globigerina ; 440 

 fathoms in globigerina ooze. 



Beddard's specimen came from a depth of 345 

 fathoms in green mud. 



Four specimens of this species were collected 

 by the United States Bureau of Fisheries steamer 

 Albatross. In his description of the form Bed- 

 dard says : " The abdominal shield was, unfortu- 

 nately, considerably damaged, so that its shape 

 can not be described with great accuracy; it ap- 

 pears to be more or less oval in form and truncated at its free ex- 

 tremity; laterally and just in front of the articulation of the long 

 styliform uropoda is a spiny process directed backward nearly in the 

 same straight line with the longitudinal axis of the abdominal shield." 



In the specimens found by 

 the Albatross the abdomen is 

 posteriorly triangular between 

 the two post-lateral spines, and 

 not truncate, as described by 

 Beddard. There are also two 

 Fig. 44. — mux.nopsis latifrons. Seventh small spines on the lateral mar- 

 ^ gin on either side. Because 



BeddarcVs specimen was imperfect, I have made a drawing of the 

 abdomen as it appears in the Albatross specimen. I have also made 

 a drawing of one of the natatory legs. 



Fig. 4:1. — Muxnopsis 

 latifrons. abdomen. 

 X 41. 



MUNNOPSIS, new species. 



About twelve specimens of a new species of Munnopsis were col- 

 lected from stations 4765, 4766, 4793, and 4800. All the specimens 

 were mutilated, so that a complete description is not possible. 



