THE GEAPSOID CEABS OF AMERICA. 



161 



Chesapeake Bay: off Point Lookout Light, Maryland; 20 fath- 

 oms; sft; temp. 47.5° F.; Apr. 24, 1916; station 8520, Fish Hawk; 

 1 male (49643). 



Sarasota Bay, Florida; Feb., 1884; Henry Hemphill; 1 male 

 (17952). 



? Florida; Union College collection (977); 1 male, identified by 

 Kingsley (42790). 



PINNIXA FRANCISCANA, new species. 



Plate 35, figs. 1-4. 



Type-locality. — Middle part of San Francisco Bay, California; 

 12|-10 fathoms; station 5709, Albatross; female holotype, Cat. No. 

 48450, U.S.N.M. 



Diagnosis. — Granulate ridge near lower edge of propodus of 

 cheliped; thumb horizontal. Merus of third leg wide. Orbital 

 margin granulate. 



Fig. 100. — PiNNixA FEANCiscANA. a. Abdomen of male (48445), X 133 ; 6> outer max- 



ILLIPED OF FEMALE HOLOTYPE, X 132. 



Description of female holotype. — Near occidentalism but carapace 

 smoother, cardiac ridge blunt and straight. Propodus of cheliped 

 small, upper edge convex, densely granulate, lower margin straight 

 from near the wrist to end of finger ; outer surface with a granulate 

 ridge just above lower edge, continued to end of finger and fringed 

 above with hair, also a line of granules through the middle, and 2 

 lines of punctae and hairs on upper half. Fingers wide, not gaping, 

 tips crossing, a wide triangular tooth at middle of dactylus, a similar 

 tooth on distal half of fixed finger. First leg reaches nearly to middle 

 of dactylus of second, second nearly to end of third, fourth to middle 

 of carpus of third ; merus of third leg If times as long as wide, dis- 

 tally narrow. 



Variations. — Male differs from female in sharpness of cardiac 

 ridge. Cardiac ridge in female may be somewhat sharp, as in female, 

 station 5743. The merus of second leg is ^'ery slender in the young 

 female and increases proportionally more rapidly in width than the 

 body in size. Cheliped of male not known. 

 65863—17 11 



