136 [ASSEMBLT 



AntenncB : Median lost ; those in pairs delicate, subulate, without 

 "basal articles. Upper pair situated just above the lower, their length 

 about equal to the width of the head; lower pair a little shorter 

 than upper. 



Ejes dark red ; anterior pair large, circular, latero-posterior ; pos- 

 terior pair a little within the front pair, almost in contact with 

 them ; crescentic, concavity directed outward and backward. 



Tentacular cirri six pairs, arising from short, cylindrical basal 

 articles, borne on the first three segments, two pairs to each seg- 

 ment ; upper cirri as long as the dorsal cirri, or even a little longer ; 

 lower about one-half as long as the upper. The first four pairs on 

 each side seem to arise from the sides of the head ; this is dne to 

 the fact that the first and second segments are not visible from 

 above, except as narrow lateral bands extending forward on the 

 head as far as the anterior eyes; these segments are well defined 

 below ; in alcoholic specimens they cannot be seen from above, and 

 even in living forms the line of division between the sides of the 

 head and the lateral prolongations of these segments is not easy to 

 demonstrate. 



Dorsal cirri very long, delicate, tapering uniformly, basal article* 

 short, cylindrical (fig. 19). 



Feet biramous ; upper ramus a stout papilla arising just below 

 the base of the dorsal cirrus ; lower I'amus stout, elongated, termi- 

 nating above in a conical process, below svhich the end of the 

 ramus is bluntly rounded, almost truncate. 



Ventral cirri arise from lower outer mai'gin of the ventral ramus, 

 delicate, conical, about one-sixth as long as the dorsal cirri. 



Setse : dorsal very long, slender, capillary, forming a close-set 

 bundle, arising from the summit of the dorsal ramus; ventral (fig. 

 20) of the form usual in this genus, hardly to be distinguished from 

 the ventral setse of Podarke obsciira Verrill, except that they are 

 longer, and that the stem has transverse markings which I have never 

 been able to see in the sette of that species. The difference in 

 length between the setas of the two species is due almost entirely to 

 the elongation of the stem in the setae of P. luteola. 



Body slightly convex above and below, widest in front, tapering 

 very gradually. The feet increase in length from the first pair ta 

 the middle a little faster than the body narrows, so that the widest 

 part, including the feet, is in the middle. 



Anal cirri in all respects similar to the dorsal. 



Color : reddish-yellow dorsally ; feet green or yellow above, 

 green laterally ; ventral surface a shade lighter than the dorsal ; 

 antennae and all cirri white. 



Length, ll™'*'; width, including feet, 2'"'"; number of seg- 

 rnents, 45. 



A single specimen was found on an oyster shell at low water. 



This species is easily distinguished from Podarke obscura Ver- 

 KiLL (the only species of this genus previously described from our 

 coast), by the form of the head — lack of basal articles for the antennae, 

 apparent origin of the tentacular cirri of the first two segments, 

 great length, and short basal articles of the dorsal cirri, etc. 



