EUCHAETOMERA TENUIS. 201 



margin, fifth and sixth segments witli spinifonn denticles along the same mar- 

 gins; most of these denticles are rather large though some small ones are inter- 

 spersed. — The uropods (fig. 5e) have both rami much slenderer than shown in 

 Sars's fig. 19 (whicli in this respect differs materially from his fig. 1). — Telson 

 (fig. 5e) considerably broader than long, in the adult female with 6-7 spines 

 along each lateral margin, while in the immature specimen only 4 and 6 spines 

 were observed. 



Length of the adult female 9 mm. 



Remarks. — It will be seen that the additions and corrections to Sard's 

 description and figures are rather numerous. I think that Brutomysis vogtii 

 Chun, taken at Madeira, is the young male of the same species. The author 

 states that the five anterior abdominal segments have a lateral armature, viz. 

 4 spiniform denticles at the postero-lateral angle of each segment, while the 

 sixth segment has spines along the whole posterior margin. It is far from im- 

 probable that the lateral armature of the anterior abdominal segments is found 

 only in the males, and if this supposition be correct, I think that the other 

 differences between the specimens studied and Chun's description and figures 

 are due to imperfections in the latter. — E. Umbata Illig is possibly another 

 species, because its squama, according to Illig's figure, has a shape somewhat 

 different from that in E. tijpica and the carapace is, at least in the male, spini- 

 ferous around the whole margin. 



Distribution. — Sars enumerated three localities in the Northern Pacific 

 between Lat. 35° 22' and 37° 52' N., long. 169° 53' E. and 160° 17' W.; his speci- 

 mens were from the surface of the sea. Ortmann recorded it from off Galera 

 Point in the tropical East Pacific antl from the Sargasso Sea and the Southern 

 equatorial current in the Atlantic. Dr. J. Schmidt captured a single specimen 

 West of Gibraltar at Lat. 3G° 13' N., long. 9° 44' W.— Chun's Brutomysis vogtii 

 was captured at Madeira, and Illig's E. limbata at two Stations in the Atlantic. 



20. Euchaetomera tenuis G. O. Sars. 



1883. Euchaetomera leniiis G. O. Sars, Forh. Vid. Selsk. Christiania for 188.3, no. 7, p. 42. 



1885. Euchaelomcra lenuis G. O. Sars, Challenger Rept., 13, p. 214, pi. 37, figs. 21-24. 



190.5. B«c/iaetomera/o«i/frt Holt & T.\TTERSALL. Fisheries Ireland. Sei. Invest., 1902-3, (1905), p. 123 



and 144; pi. 24, figs. 1-3. 

 1910. Euchaetomera tenuis H. J. Hansen, Siboga-Ex])., 37, p. OG, pi. 10, fig. 3a. 



Sta. 4717. Jan. 13, 190.5. Lat. 5° 10' S,, long. 98° .56' W. 300 fms. to surface. 1 immature fem.ale. 



Sta. 4719. Jan. U, 100.5. Lat. 6° 29.8' S., long. 101° 16.8' W. 300 fms. to surface. 1 adult female. 



Sta. 4721. Jan. 15, 1905. Lat. 8° 7.5' S., long. 104° 10..5' W 300 fms. to surface. 1 male. 



Sta. 4722. Jan. 16, 1905. Lat. 9° 31' S., long. 106° 30.5' \V. 3U0 fms. to surface. 1 adult female. 



