558 FAMILY III. CURCULIONIDJE. 



on the former date. A species of northern range recorded from 

 Illinois, Michigan, Wisconsin, Minnesota to California. ''Occurs 

 with pertinax but less common." (Horn.} Easily known from 

 other members of this group by all the intervals of elytra being 

 flat and subequal in width. 



870 (8989). SPHENOPHORUS COSTIPENKIS Horn, 1873, 420. 



Form similar to pertinax but usually more slender. Color as there. 

 Beak compressed as mentioned in key, three-fourths as long as thorax 

 finely and sparsely punctate, deeply grooved above at base. Thorax slightly 

 longer than wide, sides parallel on basal two-thirds, then curved to the 

 strongly constricted apex; disc with intervals between vittse and sides 

 coarsely punctured. Elytral striae with coarse, rather distant punctures; 

 intervals as described in key, the broader elevated ones with two rows of 

 minute punctures, the narrow ones with a single row of coarse punctures. 

 First ventral of male with small dense tuft of brown setse each side, some- 

 times much abraded. Length 7 12.5 mm. 



Lake, Porter, Steuben and Marshall counties, Ind. ; frequent 

 along the beach of Lake Michigan ; May 6 Aug. 6. Brooklyn, 

 Rockaway, Flatbush and Staten Island, N. Y., March June. 

 Many points in New Jersey, April Sept. Common in Northern 

 States and Canada from the Atlantic to the Pacific, ranging far- 

 ther north and northwest than any other species of the genus. 



871 ( -). SPHENOPHOKUS VILLOSIVENTRIS Chitt., 1905-b, 58. 



Form of costipennis. Black, the humeri, antennae, tarsi and some por- 

 tions of the under surface reddish-piceous. Male with all the ventral 

 segments more or less impressed, 1, 2 and 5 feebly concave. Otherwise 

 separated from costipennis by characters given in key. Length 10 12 

 mm. 



Described from Buffalo, Ithaca and Long Island, N. Y. ; Mass- 

 achusetts, Maryland, District of Columbia and Ft. Monroe, Va. 

 Known also from numerous localities in New Jersey; April 

 May. "To outward appearance this is merely costipennis with 

 weakly elevated elytral intervals, but the hirsute abdomen of 

 male is very like that of the cequalls group." (Chittenden.) 



872 (- -). SPHENOPHORUS MAIDIS Chitt., 1905-b, 59. 



Oblong-oval, robust. Dark reddish or piceous-velvety, feebly shining; 

 the clayey deposit on flat surfaces inconspicuous. Beak three-fifths the 

 length of thorax, minutely punctate, strongly subequally compressed 

 throughout, the front face of its apex deeply concave, hind or lower angles 

 acutely produced. Thorax longer than wide, three-fourths as long as 

 elytra, sides subparallel from base nearly to apical fourth, then strongly and 

 suddenly curved and constricted at apex; vittte feebly elevated, subobsolete, 

 the outer ones frequently united with the middle one in its apical half, 



