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Canadian jLntomalagbt 



Vol. XXXIV. LONDON, DECEMBER, 1902. 



No. 1 2 



SOME NEW BYTHOSCOPIM: FROM BRITISH COLUMBIA 



AND THE SOUTHWEST. 



BY E. D. BALL, UTAH ADR. COLLEGE, LOGAN, UTAH. 



Every collection of western Bythoscopidse that the author has 

 examined has had a more or less heterogeneous assemblage of forms 

 closely resembling Idiocerus alternatus. These have been somewhat 

 indiscriminately divided between alternaUis, ramentosus and several 

 MS. names of Uhler's in classification, or not determined at all. At 

 the time of publication of the key to this genus,* the material at hand 

 was not sufficient to warrant the descriptions of these forms, and they 

 were omitted. Since then the author has paid special attention to the 

 collecting of this group in Colorado, and has received a long series 

 of specimens from the Pacific Coast, mainly from the collection of Mr. C. 

 Livingstone. With this material it has been possible to accurately define 

 a number of these species and clear up much of the obscurity in this 

 section of the genus. During the progress of this study several other 

 new species and varieties have been described, and are also presented 

 here. 



Macropsis bistgnata, n. sp. 



Size and form of apicalis nearly, slightly more elongate, slightly 

 resembling misella, but differently marked. Bright green, the inner half 

 of clavus, the apical cells and all of the membrane testaceous brown. 

 Length : $ , 5 mm.; g , 4 mm. Width, 2 mm. 



Head much narrower than posterior angles of pronotum ; vertex 

 longer than in apicalis, and very slightly angled in front. Face as in 

 apicalis, but the front much more inflated ; elytra long and rather 

 narrow, heavily clothed with stiff black hairs ; Female segment over half 

 longer than the penultimate, the posterior margin rounding, with a small 



*Pav. Acad. Nat. Sci, Proc, Vol. VII. p. 124, 1S99. 



