no. 3 •' barnard : the fhoxocephalidae 209 



The minute panamic facies 



Small specimens about 3 mm in length were collected intertidally on 

 sand flats at Venado Island, Pacific Panama, by the writer. These proved 

 to be elder females of the species due to the long rami on uropod 3. 

 However, they differ from the warm temperate representatives by the 

 stouter third and fourth peraeopods, and the first two pairs of uropods, 

 each peduncle and ramus of which bear only one spine. 



Material examined. — 1499 specimens at 128 stations. 



Distribution. — Western Atlantic from New Hampshire to South 

 Carolina. Eastern Pacific from Mendocino County, California, to Pan- 

 ama, to 60 fms. At Venado Island, Panama, the minute facies was col- 

 lected by the writer on exposed tidal flats in small depressions filled with 

 silt and fine sand. On the southern California coastal shelf the species 

 rarely occurs below 20 fms depth, and specimens from those greater 

 depths often are aberrant and easily confused with P. lucubrans n. sp. 

 Near Pt. Conception P. epistomus occurs at stations where it appears to 

 intergrade with P. abron'tus n. sp. ? ; , < 



,-■ 



Paraphoxus f atigans, new species . i , .. 



(Plate 9) 



Diagnosis of female.—^ Differs from P. variatus n. sp. in the follow- 

 ing criteria: (1) acute cusp of epistome shorter; (2) article 5 of peraeo- 

 pod 4 shorter and much stouter; (3) the teeth on the posterior edge of 

 article 2 of peraeopod 5 are much smaller and quite closely compressed 

 together, the lower edge of the article being more oblique. 



Holotype.-^ARF Noi'535, female, 3 mm. 



Type locality. — Station 2496-53, off Long Beach, California, 33-38- 

 00 N, 118-10-00 W, 18 fms, dark sandy mud, Nov. 27/1953. 



Remarks. — The holotype of this species and that of P. variatus. are 

 quite different in respect to the epistome, peraeopod 4 and peraeopod 5. 

 In all other features the species are quite similar. 



If one inspects the figures for P. variatus one will see a trend in varia- 

 tion which brings that species close to P. f atigans, ■''especially in the de- 

 crease in the size of teeth of peraeopod 5, the shortening of the epistome 

 and, in a few specimens (Table 3), the similarity of peraeopod 4. 



"■'>> The species fatigdns may deserve no specific status and the possibility 

 that it is a phenbtype of ! variatus should be studied. ■'■:■■■ 



