ENTOMOSTRAOA OF MINNESOTA. 129 



t AntenDse thick crassilS, 130 



ft AnteDDse slender. . . trispiiiosiis,t 130; and north iinibriciis, 130 

 ** Inner ramus of the second foot three-jointed. 



t Stylets rather long niiiilitus, 131 



ft Stylets short, oval illiiioisensis, 131 



II. Inner ramus of the fourth foot three-jointed. 



a. Male antenna norma] Libernicus, 133 



b. Male antenna reduced, hooked at the end pallistris, 133 



[Not noted in the key are: teimicaudis, 129; iiortliiiinbricns var. 

 americaniis, 130; borcherdiiigii, 134; minnesotensis, 134.] 



Canihocamptus ehgantulus, C. mareoticus and C. liorridus are uncer- 

 tain, probably referred to the wrong genus. C. stromn Baird 

 (= Dactylopus stromii), C. rostratvs Claus (=: Stenlielia imci). C. vire- 

 scens, G. linearis, and C. roseus of Dana, are marine Hmyacticidw of 

 uncertain affinities. G. minutus of Claus is not sufficiently described, 

 but appears to be the earlier condition of G. miyiutus Mueller ((7. sta- 

 phynalis Jurine). 



* Canthocaniptii.s gracilis Sars. 



Is elongated linear, with the abdominal segment smooth. Caudal 

 stylets long and slender; external caudal seta about one fourth the 

 inner. All the feet with two-jointed inner rami; outer branch of 

 fourth foot longer than the others, inflexed; basal process of fifth foot 

 slightly expanded. Length 1.0 mm. 



(* Cantliocaniptus teimicaudis Herrick.) 

 Plate XXIX, Figs. 15 and 16. 



At Decatur, Ala., was found a species of Gantliocmnptus which is 

 different from any American species, and seems in many points 

 nearest the above, but, unfortunately, only a hasty sketch could be 

 made at the time, and the notes are insufficient to define it. The form 

 is not remarkably slender; the first and second abdominal segments 

 are very large. The caudal stylets are slender and elongated, the 

 inner seta being very long and curved, while the outer is quite short. 

 The anal plate is covered with hairs only. The antennae are normal, 

 of moderate length, and the fifth foot has but a narrow process at 

 the base. 



If this form be worthy a distinctive name, it may be called Gantho- 

 campius tenuieaudis. 



I Distinguished from the following by the presence of only three spines on the process of the basal 

 joint of the fifth foot. 



