AMPITHOIDAE FROM SOUTHERN CALIFORNIA — BARNARD 37 



Ampithoe species 



Figures 24, 25 



Refer to: Amphitoe [sic] mea Gurjanova, 1938, pp. 361-364, fig. 53; 1951, pp. 

 882-885, fig. 616. Ampithoe eoa.—J. L. Barnard, 1954, pp. 27-28, pis. 25-26 

 (not Gurjanova 1938). 



Diagnosis of present material: All pleonal epimera rounded behind 

 and at lower corners, no lateral ridges; article 6 of male gnathopod 1 

 longer than article 5, posterior edge of article 5 with a rounded, 

 scarcely truncated, shallow posterior lobe, article 6 narrow, sublinear, 

 palm transverse, finger overlapping palm by its full length; gnathopod 

 2 of male in a state of intermediacy compared with Ampithoe tea, new 

 species, finger about half as long as hind edge of article 6, palm not 

 distinct, the hind edge of article 6 minutely serrate, with a slight 

 notch near distal end, article 2 with a poorly developed distal bump; 

 article 2 of pereopods 1-2 strongly inflated, 1.6 times as long as broad; 

 article 2 of pereopod 3 broader than long; ventral edge of article 1 of 

 first antenna with a few distal slender spines; antenna 1 much longer 

 than antenna 2, the flagellum of antenna 1 about 3 times as long as 

 that of antenna 2, the latter flagellum short, 1 .3 times as long as article 5 

 of peduncle, articles stout, antenna 2 well setose, article 4 of peduncle 

 about 90% (aberrantly 60% as in figured male) as long as article 5; 

 outer apical lobule of lower lip somewhat longer than medial lobule; 

 coxae 1 and 2 shorter than 3 and 4 but not broadened, coxa 1 not 

 produced forward; peduncular process of uropod 1 long. 



Female: Article 5 of gnathopod 1 shorter than article 6; gnathopod 

 2 with article 6 similar to that of gnathopod 1 in both sexes but stouter 

 and less linear, article 5 shorter than 6 and with well-developed 

 posterior lobe that is narrower than in A. tea, new species. 



Material: Barnard station 5 (5). 



Record: Corona del Mar, Calif., intertidal. 



Remarks : The specimens differ from the figures of A. mea Gurj anova 

 (and A. eoa Gurjanova) in the female second gnathopod, having a 

 transverse palm with a strongly overlapping finger. In A. mea the 

 female second gnathopod has an oblique, excavated palm with the 

 finger fitting it and a longer fourth article of antenna 2. I suggest the 

 possibility that A. mea females shown by Gurjanova may be either 

 aberrant, gerontic females commencing to demonstrate male conditions 

 or subadult males. The correspondence of A. annenkovae Gurjanova 

 (see 1951) to A. mea is striking. The male and female second gnatho- 



