334 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



C^. Carapace wider, fourth lateral tootli equal to or narrower than thirds 

 D'. Edge of front thick, beveled, and with a transverse groove. 

 Third segment of male abodmen with lateral extremities broadly- 

 rounded bermudensis, p. 360. 



D2. Edge of front if thick not transversely grooved. Third segment 

 of male abdomen with lateral extremities angled. 

 E'. Front much produced, narrow, .24 of carapace width. First 

 and second lateral teeth deeply separated; remaining teeth 



strongly hooked, spiniform chilensis, p. 346. 



E-. Front little produced, wider, .28 to .33 of carapace width. 

 First and second lateral teeth not deeply separated; re- 

 maining teeth not strongly hooked. 



F^ Sixth segment of male abdomen much broader than 

 long. First and second lateral teeth of carapace very 

 unequal, separated by a shallow sinus. Color of 

 immovable fingers running slightly back on palm. 



turgidus, p. 364. 

 F-. Sixth segment of male abdomen very little broader 

 than long. First and second lateral teeth of carapace 

 separated by a deeper sinus. Color of immovable 

 fingers running well back on palm in male. 

 G'. Outer margins of lateral teeth form a regular curve 

 from lateral angle of carapace to orbital angle, 

 herbstii, typical, p. 335. 

 G^. Lateral teeth more outstanding, their outer mar- 

 gins not forming a regular curve from lateral 

 angle to orbital angle. 

 H'. Teeth shallow, third tooth suboblong. 



herbstii forma obesa, p. 336, 

 H2. Teeth deeper, measured from tip to base, 

 compared to distance between sinuses. 



herbstii forma crassa, p. 336. 

 B2. Dark color of immovable finger not continued on palm. 



C^ Carapace and chelipeds rough and hairy. Outer surface of palm 



with three longitudinal ridges rugosus, p. 353. 



C^. Carapace and chelipeds not noticeably hairy. Outer surface of palm 

 without longitudinal ridges. 

 D'. Coalesced (first plus second) lateral tooth narrow, width equal 



to that of fourth tooth J purpureas, p. 344. 



D". Coalesced tooth broad, width greater than that of fourth tooth. 

 El. Carapace rough with upstanding bead granules. First and 

 second lateral teeth similar, acute and widely separated. 



harttii. p. 355. 

 E^. Granules of carapace depressed. 



FK Carapace rugose. Third to fifth lateral teeth more 

 prominent and widely separated. 



occidentalis forma serrata, p. 349. 

 F2. Carapace nearly smooth. Third to fifth lateral teeth 

 less prominent aiid nearer together. 

 G'. Third lateral tooth narrower at base than fourth. 



convexus, p. 352. 

 G2. Third lateral tooth wider at base than fourth. 



occidentalis, typical, p. 348. 



A^. Four lateral teeth, the first two of the normally five teeth completely and 



indistinguishably fused boekei, p. 365. 



