458 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



down on tlu> outer surfjife; otherwise it is set with spiny oriiiudes us 

 in the hirge hand. The (hietyl does not show from alcove anv tiat- 

 tened surfaee, but from the prehensile edge to the outer margin it is 

 evenly rounded. 



The ambulatory legs of the right side overreaeh the right oheliped 

 but little; in very large specimens not at all. The upper surfaee of 

 the merus joints are a little flattened. The upper margin of the car- 

 pus is armed with a single row of spines. Upper surface of propodal 

 joints flattened, armed with a row of short spines on the sunnnit and 

 elsewhere with spin}' granules. The dactyls are very wide, com- 

 pressed, and twisted. The upper surface is convex, its summit and 

 margins each set with a row of granules. Between these rows are 

 long% smooth surfaces. The inner surface of the dactjd is flat. The 

 outer surface is very convex near the proximal end, but becomes 

 much more flattened near the tip. 



In alcoholic specimens the general color a})ove is a light purple 

 with iridescent reflections; below, light, tinged with reddish. A red 

 streak runs around the prehensile edge of the thumbs and behind the 

 dact3'^ls to the inner margins of the hands. There is an oblong patch 

 of I'ed on the outer distal margins and on the inner upper surface of 

 the merus joints of the cheliped. The lower outer surface of the car- 

 pal joints of the ambulatory legs are pointed with red. The propodal 

 joints and dactyls are longitudinally streaked with red. 



This species is very close to hcrnhardus, but is easily distinguished 

 by its broader and shorter left hand, by the wide dactyls of the 

 aml)ulat()ry legs, ])y the acicula, and by its pearh" iridescence. 



Brai)dt recognized but one North Pacific '* variet}' ^ of hernhardus 

 besides the very distinct ochotensls,' of this he had but a single speci- 

 men obtained b}^ Wosnesenski at Unalaska and believed by Brandt 

 to be identical with the very common form on the English coast, 

 which he designates under the descriptive phrase as "var. B. granu- 

 lata-denticuUvtay As alashenms has a much greater resemblance to 

 the true hernhardus than has aleuticiis^ Brandt's descriptive phrase is 

 made synonymous with it, though from the localit}' aleuticus would 

 be nmch more likely to be obtained. Stimpson says under Eupagu- 

 rus hernJiardus,^ "Specimens have been sent from Puget Sound by 

 Dr. Kennerly." Specimens from the Straits of Fuca are small but 

 readily distinguished from acadianus. 



' Ann. Lye. Nat. Hist., New York, VII, p. 89. 



