108 THE CANADIAN ENTOMOLOGIST. 



densely hairy, similar to those of Salina Banksii, white, except the apex 

 of the hind coxee, and the hind femora, except at apex, purplish-black ; 

 claws slender, outer one-fourth longer than inner, with two teeth, inner 

 more slender than outer, without teeth ; tenant hair present ; abdominal 

 segments unequal, first indistinct, second and third subequal, fourth eight 

 or ten times longer than third ; furcula white, long, stout, densely hairy 

 beneath, reaching beyond the ventral tube ; manubrium broad, with a 

 purplish stripe down each side, reaching about the middle of the fourth 

 abdominal segment, with several spines at apex ; dentes about as long 

 as the manubrium, smooth, lateral hairs twice the length of ventral, 

 serrate beneath ; mucrones one-half longer than broad, with a stout ter- 

 minal hook and a basal denticle. Length, 3.5 mm. 



Habitat : El Pilur, Venezuela. (Summers, collector). 



Named after Prof H. E. Summers, of Champaign, Illinois. 



Smynthurid.'e. '^ 



The following table will probably be found useful in separating the 

 species of Smynthurus. All the species are included except qtiadrisig- 

 natus, Pack., which is not certainly known and not sufficiently character- 

 ized to be placed from the description : — 



A. Abdomen not with a dorsal spine. 



B. Furcula not with laterally developed bristles. 



C. Abdomen not black with white spots. 



D. Fourth segment of the antennae not ringed minutus, n. sp. 



DD. Fourth segment of the antennae distinctly ringed. 



E. Fourth segment with six sub-segments hortensis, Fitch 



EE. Fourth segment with more than six sub-segments. 



F. Fourth segment with eight sub-segments .ferrugineus, Pack. 



FF. Fourth segment with more than eight sub-segments. 



G. Fourth segment with nine sub segments. 



H. Size small ; colour deep delicate roseate roseus, Pack. 



HH. Size moderate; colour black with lighter markings elegans^Yiich. 



GG. Fourth segment with ten sub-segments arvalis, Fitch. 



CC. Abdomen entirely black with four small dorsal white spots. 



*Schott adds the following : — Smynthurus eisenii, Scholt, p. 7. S. luteus, Lub., 

 p. II. S, niger, Lub., p. 12, S. plicatus^ sSchott, p. 13. 



