488 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



Holotype: USNM 105706, ?male, 2.2 mm, figured. 



Type locality: Abbott station 145-C-2, Ifaluk Atoll, Oct. 21, 1953. 



Material: The holotype and one specimen from Bayer station 465 

 C 1/4. 



Relationship: This anamixed is unusual in the shape and orna- 

 mentation of its head, the long fourth palp article of the maxilhped, 

 the broadly expanded palm of gnathopod 2 cut into large teeth and 

 the apically bifid claw of gnathopod 2. As such, it bears no close 

 relationship to the other species of the genus. 



Instead of small dentitions on the dactyl of gnathopod 1, the other 

 specimen from station 465 C 1/4 has small, short setae. This may 

 be a growth stage or perhaps indicate a different sex. 



Distribution: Ifaluk Atoll, Caroline Islands. 



Anamixis stebbingi Walker 



Figure 4 

 Anamixis stebbingi Walker, 1904, pp. 259-261, pi. 3, fig. 18. 



Diagnosis: Head partially fused with first pereonal segment, but 

 a slight, movable articulation is present; head not strongly produced 

 forward as in A. falarikia, new species, bearing a sharp tooth for a 

 lateral lobe, rostrum distinct from rest of head; antenna 1 attached 

 behind apex of rostrum, distal end of article 1 not bearing a small 

 tooth; lower part of mouth area bearing a lamina with a single acute 

 tooth, not projecting as an epistome would; fourth maxillipedal palp 

 article remarkably elongated and curved as in A. falarikia; opposing 

 chelae of gnathopod 1 apicaUy blunt and slightly bulbous, neither 

 chela bearing an apical spine, seventh article (claw) with a toothed 

 inner edge; coxa of gnathopod 2 longer than broad, not larger than 

 coxa of pereopod 1, lower edge slightly sinuous, article 2 lacking a 

 distal tooth or bump, process of article 5 long, article 6 narrow, palm 

 not distinct, hind edge straight, bearing a distal tooth and a small 

 subdistal serration, article 7 simple, not bifid, bearing a single inner 

 protuberance ; second articles of pereopods 3-5 slightly more expanded 

 than in A. falarikia, with faint radial lines; outer rami of uropods 

 1-2 quite short, about half the length of the inner rami, uropod 3 

 missing; telson apically rounded. 



Material: Abbott stations 145-C-2 (1), 177-G-5 (1). 



Remarks: This was the second species of the genus described and 

 differs from the type species, A. hanseni, by the lack of apical spines 

 on the chelae of gnathopod 1 and the single, not double protuberance 

 on the claw of gnathopod 2. The first coxa is seen as a distinct lateral 

 plate produced forward into a bifid apex. 



