PART 1 GARTH : PACIFIC OXYRHYNCHA 183 



10b. Eyestalks longer, movable 



11a. Some strong tubercles on dorsal surface of 

 carapace. Propodites of ambulatory legs 

 dentigerous .... Eupleurodon 

 lib. Carapace nearly smooth or posteriorly 

 eroded. Propodi of ambulatory legs entire 

 (non-prehensile) . . . Epialtoides 

 9b. Four free abdominal segments in female . Esopus 



Genus MIMULUS Stimpson 



Mimulus Stimpson, 1860b, p. 199. A. Milne Edwards, 1878, p. 144. 

 Holmes, 1900, p. 23. Rathbun, 1925, p. 182. 



Type: Mimulus foliatus Stimpson, by monotypy. 



Description: Carapace flattened, more or less pentagonal; antero- 

 lateral margin laminate and cut by a narrow fissure into two closely 

 approximate lobes. Rostrum short, bifid, and horizontal. Orbits incom- 

 plete below, but furnished above with a preorbital and postorbital spine. 

 Eyes not concealed when retracted. Merus of the external maxillipeds 

 short, the external angle obtuse, the internal angle incised ; outer margin 

 of the exognath dilated. Hand of the chelipeds much compressed and 

 subcarinate. Propodi of the ambulatory legs with a setose tooth near 

 the middle of the inferior margin. First pair of ambulatory legs ex- 

 ceeding the others. (Holmes, after Stimpson) 



Abdomen seven-segmented in both sexes. 



Range: Pacific coast of North America from Unalaska, Alaska, to 

 Point Arguello and Santa Cruz Island, California. Not Mazatlan, 

 Mexico. (A. Milne Edwards) Shore to 70 fathoms. 



Contains, in all probability, but one species. 



Mimulus foliatus Stimpson 

 Plate L, Fig. 1 ; Plate 25, Fig. 3 



Mimulus foliatus Stimpson, 1860b, p. 200, pi. 5 (not 3), fig. 1. A. 

 Milne Edwards, 1875, pi. 18, figs. 4-4d; 1878, p. 145. Miers, 

 1879c, p. 649. Holmes, 1900, p. 23. Rathbun, 1904, p. 173; 1925, 

 p. 182, pi. 60, text-figs. 70, 71. Weymouth, 1910, p. 30, pi. 4, figs. 

 12, 13. Taylor, 1912, pp. 191, 208. Schmitt, 1921, p. 204, text-figs. 

 127a, 127b. Johnson and Snook, 1927, p. 368, fig. 320. Clemens, 

 1933, p. 51. Ricketts and Calvin. 1939, p. 94, pi. 2& Hart, 1940, 

 p. 98. 



