DECAPOD CRUSTACEANS — CHACE 



641 



meters- Feb. 2, 1959; 10 males, 12 females (7 ovigerous).— Same; 

 buoy and cable; 0-75 meters; Mar. 18, 1960; 31 males, 38 females 

 (16 ovigerous), 2 juveniles [1 male is holotype, USNM 112457].— 

 Same- Apr. 5, 1962; 23 males, 16 females (2 ovigerous), 2 juveniles.— 

 Same'; buoy; 0-2 meters; Feb. 11, 1963; 28 males, 35 females (18 

 ovigerous) .-James Bay; collected by skindiver; February 1964; 

 1 female.— Same; April 1964; 6 males, 12 females (2 ovigerous). 



Description: Carapace from one-fifth to one-third broader than 

 long at all sizes. Surface evenly convex and covered with transverse 

 striae, those on gastric and hepatic regions granulate and crowded, 

 those on cardiac and intestinal regions fainter and sparser. Lateral 

 margins slightly arched, strongly convergent posteriorly, and armed 

 with an outstanding, acute tooth posterior to similar, but larger, 



Figure 9. — Pachygrapsus loveridgei, male holotype. 



outer orbital tooth. Median postfrontal lobes distinct and transverse, 

 outer pair less prominent and slantmg obliquely toward outer angle 

 of front. Front slightly more than half as wide as carapace, anterior 

 margin sinuous and granulate, faintly convex on both sides between 

 shallow median and lateral sinuses, lateral margms converging anteri- 

 orly, surface with prominent granulate ridge behmd each lobe and 

 shorter, fainter striae elsewhere. Orbits oblique, about two-fifths as 

 wide as front, lower border distinctly denticidate and separated by 

 narrow notch from outer orbital tooth. 



Chelipeds equal, merus and carpus transversely striated. Inner 

 lobe of merus denticulate, with large and small notch at distal end 

 forming three teeth. Carpal tooth blunt. Chelae robust; upper 

 margin of palm with several oblique striae bearmg a few small, pearly 



