652 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



three or four smaller oaes on each side near the tip of the closed dacty- 

 lus; the posterior margin beyond the tip of the dactyhis with a few hairs 

 and several small, obtuse spines ; dactylus strongly curved and one-half 

 as long as the propodas. In the female, the propodus is considerably 

 smaller and proportionally shorter than in the male; the palmary mar- 

 gin is without the lamellar edge and without spines, except two or three 

 long ones near the tip of the closed dactylus; and the posterior margin 

 is armed with several shorter spines and quite numerous hairs arranged 

 in several fascicles. Legs of the second pair in the male with the 

 carpus a little longer than in the first pair; the propodus as long as in 

 the first pair, slightly broadest distally, but the edges nearly parallel, 

 and only slightly convex in outline; the palmary margin a little oblique, 

 concave in the middle, with a broader lamellar edge than in the first 

 pair, and armed on the outer side with a long, stout, and obtuse spine 

 near the middle, two or three smaller ones on each side — usually two 

 on the outer side and three on the inside — at the tip of the closed dac- 

 tylus, a few short hairs along the base of the lamellar margin, and a 

 fascicle of long hairs at the base of the median spine; the posterior mar- 

 gin with about six fascicles of hairs. In the female, the carpus and hand 

 are considerably smaller than in the male ; the carpus is proportionally 

 much more elongated than in the male, and fully as broad as the pro 

 podus ; the propodus is narrow, twice as long as broad, the edges nearly 

 parallel, the palmary margin without the lamellar edge and without the 

 spine in the middle, straight, and very nearly transverse. 



Fourth and fifth segments of the abdomen roundeck above, and each 

 armed with three fascicles of a very few small spiues. Sixth segment 

 with a fascicle of two or three spines each side, but no median fascicle. 

 Inferior lateral margin of the first segment rounded, of the second 

 and third produced posteriorly into an acute angle. Outer rami of the 

 posterior caudal stylets narrow, with two or three stout spines on the 

 proximal two-thirds of the outer edge; the inner edge without spines, 

 and both edges furnished with long hairs; the terminal segment short, 

 tapering, and the edges, as well as the tip, furnished with long hairs. 

 Inner rami narrow, not quite as long as the basal portion of the outer; 

 both edges furnished with long hairs, as in the outer rami, and the inner 

 edge with two or three spines. Divisions of the telson about as long as 

 the peduncles of the posterior caudal stylets, and tipped with two or 

 three short spines and a few hairs. 



Length, from the front of the head to the tip of the telson, 15"™ to 20™™. 



Color in life, uniform obscure dark brownish-green, without spots or 

 markings of any kind. 



Dredged in Lake Superior in abundance among Cladophora, in 8 to 

 13 fathoms, on the south side ot Saint Ignace Island ; also at Simmons's 

 Harbor, on the north shore, in 13 to 15 fathoms ; and among the Slate 

 Islands in 4 to 6 and 12 to 14 fathoms ; taken also from the stomachs 

 of trout caught in brooks near Marquette, Mich. It is probably com- 



