58 THE CANADIAN ENTOMOLOGIST. . 



36. Body yellowish-fuscous, purplish or black without a median black 



line 37. 



Body in great part greenish-yellow with a distinct median black line. 

 Habitat — Europe; Massachusetts (Packard); White Mountains, 

 New Hampshire (Mrs. Annie Trumbull Slosson); Long Island 

 (Nathan Banks); Virginia (\Vm. D. Richardson); Ithaca, New 

 York viridis riparia, Nic. 



37. Dorsum, except a itw yellowish dots, entirely fuscous. The Massa- 



chusetts specimens of Isotoina tricolor, together with Isotoma 

 Be/frageii, purpiirescens a.nd. ph(inbea,ht\o\'\g to viridis, Bourlet. 

 Habitat — Europe ; Massachusetts, and Waco, Texas (Packard); 

 Brazos County, Texas (Nathan Banks); Beverly, Massachusetts 

 (A. P. Morse); California (Schotl) ; Ithaca, New 



York viridis, Bourlet. 



Dorsum distinctly marked with yellowish 38. 



38. Yellowish with a distinctly marked wide transverse black band on 



each segment. Habitat — Boreal Europe . . *viridis ciiicta, Tullb. 

 Yellowish, but not with such a band 39- 



39. Each segment marked at middle with a loop-shaped mark, the sides 



of the closed end more distant than those of the open end ; the 

 open end at the cephalic end of each segment ; the closed end 

 sometimes interrupted ; the sides of the segments prominently 



figured with black. Habitat — Boreal 



Asia *viridis arctica, Schott. 



Each segment marked with three closed and united deltoid-shaped 

 marks. Habitat — Agricultural College, Mississippi (H. E. 



Weed) viridis delta, n. var. 



Species that could not be placed from lack of specimens and of 

 figures of the claws and mucrones : — 



Isotoma quadrioculata, Tulib. — '■' Segment um tertiuin abdominis 



brevius quain quartum. in quo fiirciila insert a est. Ocelli 4 ; 2 in iitroqiie 



latere capitis. Denies furciilce manubris Jio/i longiores, recti ; mucrones 



bidenticnlati. Long. 1^ mm." Habitat— Boreal Europe and America. 



1872. Tullberii, Sveriges Podurider, p. 48. 



Isotoma Jimetaria, Lin;i. — " Segmentum tcrtinm abdominis brevius 

 quam quartum, in quo ficrcula itiserta est. ' Ocelli nulli. Denies /urculcs 

 manubrio fere duplo longiores, recti ; mucrones bidenticulati. Long, t mm.'^ 

 Habitat — Boreal and Central Europe and Boreal America. 

 1872. Tullberg, Sveriges Podurider, p. 48. 



* Species not seen. 



Mailed February yA, 1896. 



