646 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 49. 



long as broad; the third tooth is small, triangular, shorter than 

 broad. The proximal process (p^) is long and nearly regularly- 

 curved, thickened near the base on the outer side and the terminal 

 part is very expanded, but this expanded part differs considerably 

 from that in E. gibhoides; that expansion, seen from the imier side 

 (fig. Id) is vertical on the process (in E. gihhoides it is very oblique) 

 and its anterior narrow part is narrower and much longer than in 

 E. gibhoides. The median lobe has no protruding, acute triangle on 

 the proximal part of the inner margin; the distal part is broad seen 

 from behind with the distal margin broadly rounded; seen from 

 the inner side (fig. Ic) the lobe has the teraiinal margin long and a 

 little oblique, while the terminal angle is about 70°; in E. gibhoides 

 the lobe has an acute, protruding tubercle on the inner margm, and 

 the distal part is produced into a somewhat oblong triangle with the 

 end acute. The lateral process (p^) has the major part strongly 

 curved and without any accessor}^ tooth. 



Length of a large female, 18 mm.; of a large male, 17.5 mm. 



The type, a male, is Cat. No. 47890, U.S.N.M. 



The paratype, a female, is Cat. No. 47889, U.S.N.M. 



Remarks. — The differences between the distal parts of the terminal 

 and proximal processes and the median lobe of the copulatory organs 

 in E. faUax and those in E. gihhoides are so strong that the two 

 species are well separated. Besides, E. fallax is considerably smaller 

 than E. gihhoides. The females of the two species are difficult to 

 separate; in E. gihhoides the process on third abdominal segment is 

 always present and at least in larger specimens stronger and more 

 developed than in E. fallax. 



Genus PSEUDEUPHAUSIA H.J.Hansen. 

 Only a single species is known. 



17. PSEUDEUPHAUSIA LATIFRONS G. O. Sars. 



January 15, 1908. Nasugbu Bay, Luzon. (About lat. 13° 55' N.) 

 Anchorage. Surface. 7 p. m. Electric light. 1 specimen. 



January 21, 1908. Nasugbu Bay, Luzon. Anchorage. Surface. 

 7.30 p. m. Large number of specimens. 



February 20, 1909. Taal anchorage, Balayan Bay, Luzon. 

 (About lat. 13° 48' N., long. 120° 45' E.) Surface. 7.30 p. m. 

 1 specimen. 



July 22, 1908. Varadero Bay, anchorage. Lat. 13° 40' 09" N.; 

 long. 120° 59' 30" E. 6-15 feet. 8 p. m. Immense number of 

 specimens. 



July 22, 1908. Varadero Harbor. 10.30-11.30 p. m. Numerous 

 specimens. 



