G94 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



of the species arc coufiued to the shallow pools ami other small bodies 

 of water about the lake, aud do uot occur, or only verj^ sparingly, in the 

 lalce itself. 



Ephemerid^t;, species. 



The larva of one species was dredged in 32 fathoms in !!:^eepigon Bay. 



The species of this family did not seem to be abundant in the lake 

 itself, aud the cast skins of the pupaj were nowhere, as f;ir as my obser- 

 vatious went, in such great abundance as they are on the lower lakes. 



Hydropsyche, species. 



The larva of a species, belonging apparently to this genus, was 

 dredged in 13 to 15 fathoms at Simmons' Harbor. The larvai, pupai, 

 and sub-imago of the same or a closely-allied species werefouud in great 

 abundance in stomachs of white-fish taken at Sault Sainte Marie. 



PiiRYGANEiDiE, specics. (Plate HI, figs. 18, 19.) 



The larvfB of another Phrygaueid, inhabiting a cylindrical, tapering 

 tube, composed of bits of the stem of the Clqdophora, among which 

 it lives, were abundant in 8 to 13 fathoms ou the south side of Saint 

 Iguace Island, and in 15 to 18 fathoms at Simmons' Harbor. Tiie larvae 

 and pup;i3 of the same or an allied genus were found in the stomachs 

 of white-fish taken at Sault Sainte Marie. 



ACARINA. 



Hydrachna, species. 



A small, dark-colored species was dredged in 4 to 6 fathoms in the 

 cove at the eastern end of Saint Ignace Island. A species, apparently 

 the same, occurred in tlie stomachs of the wbite-fish taken at Ecorse, 

 Mich. 



CRUSTACEA. 



PODOPHTHALMIA. 



CA3IBAEUS viRTLis.Hagen. (p. 638.) 

 Cambarus propinquus Girard. (p. G38.) 

 Cambarus rusticus Girard. (p. 639.) 

 Cambarus Bartonii Erickson. (p. 639.) 

 Mysis relicta Loven. (p. 642.) 



TETPvADEOAPODA. 



AMPHIPODA. 



Hyalella dentata Smith, (p. 645.) 

 PoNTOPOREiA Hoyi Smith, (p. 617.) 



GAM3IARUS LIMN.EUS Smith, (p. 631.) 



Cranggnyx gracilis Siifith. (p. 654.) 



