234 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



Description. — Color of body brown in alcohol, egg strings yellow; 

 body with dark bro\\Ti splotches and dorsal black spot, the eye, on 

 cephalon. The three paii's of spots on the underpart of the head as 

 described by Nordmann (1864) were not found. 



Cephalon ellipsoid dorsally, of general ellipsoid shape laterally, 

 with ventral surface projecting in region of mouth cone. Dark eye 

 spot present on dorsal surface, in middle of anterior portion of cephalon. 

 Division between cephalon and fu'st thoracic leg-bearing segment 

 distinct, cm*ving anteriorly on dorsal sm^face. First, second, and 

 third thoracic leg-bearing segments forming neck. First thoracic 

 leg-bearing segment short, tapered posteriorly, greatest width about 

 twice greatest length. First segment overlapping second leg-bearing 

 segment slightly, second segment slightly longer than fii-st, tapered 

 to junction of third thoracic leg-bearing segment. Third segment 

 of varying length though generally equal to length of second leg- 

 bearing segment. Posterior portion of third segment flared slightly 

 at junction of fourth thoracic leg-bearing segment. Fourth leg- 

 bearing segment expanded, fused to genital segment ; fourth leg-bearing 

 segment, genital segment, and abdomen forming elongate posterior 

 portion of body. Indication of posterior end of fourth leg-bearing 

 segment present as slight constriction in most specimens though 

 absent in some. Anterior margins of fourth leg-bearing segment 

 rounded, ciu-ved medially to junction of third segment (figs. 24:C,d). 

 Lateral margins of fused fourth thoracic leg-bearing segment, genital 

 segment, and abdomen elongate, almost parallel; dorsal and ventral 

 surface with several seta-like projections from epidermis but not 

 projecting above cuticle in most specimens (fig. 24(i). Abdomen 

 small, projecting from posterior dorsal surface of genital segment; 

 caudal projections overlapping caudal rami. The abdomen shows 

 significant variation in the specimens examined; both long and short 

 caudal projections were observed in the small series; bulbous and 

 roimded terminations of the caudal projections were also seen (figs. 

 24:6,/). Both of these variations were found in about equal propor- 

 tions though the two do not appear to be related, forms with long 

 abdomens being found with and without the bulbous terminations 

 as also were forms with short abdomens (figs. 24a-/). 



Egg strings long, with 36-42 eggs in each string. Distal end of 

 string either rounded or projecting beyond last egg in string in tapered 

 projection sharply rounded at tip (figs. 24a,6). 



Antennule absent in all specimens. 



Segmentation of second antenna indistinct, probably two-seg- 

 mented. Appendage projecting anteriorly from anterior ventral 

 surface of head, forming organ of attachment. Both second anten- 



