of the Virginian Coast. 



209 



Tentacular cirri arise from an elongated cylindrical base; 

 superior lost; inferior as long as the head, inner half 

 cylindrical, outer half conical ; covered from near their 

 origin for two-thirds of their length with rather coarse 

 papillge. 



Elytra, probably 12 pairs ; very minute, transparent, 

 smooth, edge without appendages. They were colorless, 

 with numerous very light brown specks and streaks. 

 They barely covered the base of the feet, not reaching to 

 the middle line of the body. The shape varies, some 

 being as shown in pi. II, f. 16, others as in f. 17. 



Dorsal cirri long, projecting beyond the setae, in all 

 respects similar to the tentacular cirri. Feet long, nearly 

 cylindrical, bilabiate. Dorsal ramus a mere papilla on 

 the upper surface of the foot. Setae of dorsal ramus (pi. 

 II, f. 18) delicate, one edge very finely denticulated, ter- 

 minating in a long capillary point. Setae of ventral ramus 

 of several kinds : first and second setigerous segments, the 

 setae terminate in a single sharp point, at some distance 

 below which is a long series of sharp teeth (pi. II, f. 20) ; on 

 the remaining segments, except the last two, the setae are 

 bidentate, serrate below the apex, the teeth being arranged 

 in short series. The superior terminal tooth is much 

 curved (pi. II, f. 19). In the penultimate segment these 

 setae are replaced in part by strong hooked setae ; while 

 in the last segment the hooked setae are the only ones 

 found (pi. II, figs. 21, 22). It seems probable that the 

 function of these hooks is to hold on to the body of 

 Lepidametria commensalis, under the elytra of which they 

 are found. Length about 2°'°'. 



LEPIDAMETRIA n. gen. 

 Lateral margins of the head prolonged to form the bases 

 of the lateral antennae. Middle antenna with distinct basal 

 article. A small facial tubercle. Body elongated, flattened. 



