of the Virginia7i Coast. 



211 



Tentacular cirri arise from a long basal article, much 

 enlarged at origin. The superior cirrus is a little shorter 

 than the median antenna; inferior, a little shorter than 

 the superior. 



The elytra are smooth, border without appendages. 

 There may be from 38 to 50 on a side. They can not be 

 enumerated in pairs, since opposite sides of the same seg- 

 ment may bear, one, an elytron, the other, a dorsal cirrus. 

 For the first 32 segments the arrangement is uniform ; viz : 



1, 3, 4, 6, 26, 27, 29, 30, 32. After the 32d segment no 



two specimens present exactly the same arrangement ; 

 even the opposite sides of the same specimen, as mentioned 

 above, differing both in the number and position of the 

 elytra. For example, on one specimen between the 39th 

 and 44th segments, inclusive, was the following arrange- 

 ment. Right side, elytra on 39th and 44th segments : 



Dorsal cirri, 40, 41, 42, 43. 

 Left side, elytra, 39, 41, 42, 44 : 



Dorsal cirri, 40, 43. 



The elytra (figs. 25, 26, 27) extend along the entire 

 length of the body, and in some cases cover the body 

 completely, but usually there is a naked median space of 

 variable width, and often they do not overlap, or even 

 touch each other in any direction. Anterior pair of elytra 

 circular, elsewhere oval, longer axis transverse, anterior 

 margin emarginate when overlapped by preceding elytron ; 

 otherwise rounded. A variable number of posterior seg- 

 ments are without elytra. These segments are very short, 

 and are always covered by the last pair. 



The dorsal cirri arise from stout, nearly cylindrical 

 basal articles (f. 28), which are one-third as long as the 

 cirri. They extend a little beyond the foot. Their struc- 

 ture is the same as that of the antennae, save that the 

 subterminal swelling is even less obvious. The basal arti- 



