PEREZ FARFANTE: DIAGNOSTIC CHARACTERS IN HEPOMADUS 



Figure 3. — Hepomadus tener. A. Lateral 

 view of carapace, ^ 52 mm c.l., off Back 

 Bay, Va. B. Lateral view of abdomen, 

 •? 51 mm c.l., off Atlamic City, N.J. 

 C. Lateral view of abdomen, </ 35.5 mm 

 c.l., SE of Cabo Rojo, Veracruz. 



lightly sclerotized lobes: 1) anterodorsal lobe, 

 subtriangular in outline, often bearing longi- 

 tudinal, ventromedian carina, and ending 

 anteriorly in vertical, apical ridge; lateral 

 walls of lobe tapering from apical ridge 

 posteriorly, and ending in caudally divergent, 

 cornified, epistomal bars; and 2) posteroventral 

 lobe, subtrapezoidal, delimited by lateral ribs 

 projecting anteriorly as paired, small con- 

 vexities on margin of lobe; posterior portions 

 of ribs turning mesially but not meeting in 

 midline. 



Mandibular palp with proximal lobe of 

 second segment ranging from blunt to acute. 

 Second maxilla with endite of basis, "maxil- 

 lary palp," bearing 2 to 4 strong and 1 to 4 



weak setae [occasionally none according to 

 A. Milne Edwards and Bouvier (1909) on a 

 specimen identified as "H. glacialis"] on upper 

 side of distolateral portion; and 2 to 5 strong 

 and 1 to 4 weak setae, or none, on the lower 

 side; in addition, 1 to 6 long, plumose, distal 

 setae often present on upper side (Figure 5B, 

 C). Number of setae on endite of right and 

 left maxilla often different in same individual 

 of this species as in holotype of H. glacialis 

 (Figure 5D, E, left second maxilla). Exopod 

 of first maxilliped with proximomesial border 

 bearing 4 to 7 long, rigid setae. 



Third maxilliped reaching base to distal 

 end of third antennular segment, its dactyl with 

 mesial side broadening abruptly at distal end 



445 



