158 



U. S. NATIONAL MUSEUM BULLETIN 216 



PART 3 



Figures 69, 70. — Localities: 69 (left), Ischnus laevifrons; 70 (right), /. rhomboidalis. 



Coloration about as in /. inquisitorius atricollaris except that hind 

 tibia has a basal or subbasal paler band of a stramineous or whitish 

 color, white markings on thorax of female average less extensive, and 

 female has no m.edian pale spot on occiput below the ocelli. 



This species has been confused with /. inquisitorius atricollaris, 

 but can be distinguished by the paler band at the base of the hind 

 tibia and lack of lateral carinae on the basal 0.3 of the scutellum. It 

 is very closely related to /. minor and there seems to be some tend- 

 ency for these two to intergrade, although all specimens at hand can 

 be assigned to one or the other on the color of the hind coxa — fulvous 

 in this species and black in minor. 



The type of Walsh's name rhomhoidalis is destroyed and the name 

 has gone unrecognized. After stud}^ of the description it appears 

 that Walsh was describing a small female of this species, with the 

 hind tarsus entirely brownish. None of our specimens are entirely 

 without white on the hind tarsus, but Walsh's observation may have 

 been faulty, or his specimen abnormal. His statement that the basal 

 0.2 of the hind tibia is whitish and the stouter flagellar segments 

 point definitely to this species. 



Specimens (49 cJ", 519): From Colorado; Indiana; Iowa (Dickinson 

 Co.); Kansas (Lawrence); Massachusetts (South Hadley); Michigan 

 (Alcona Co., Ann Arbor, Bay City, Bois Blanc Island in Mackinac 

 Co., Brevort, Crawford Co., Douglas Lake, East Lansing, Eaton Co., 

 George Reserve in Livingston Co., Gladwin Co., 13 miles north of 

 Lapeer, Newaygo Co., Ogemaw Co., Otsego Co., and Sanilac Co.); 

 Minnesota (Carver Co., Norman Co., Preston, and Redwood Co.); 

 New Hampshire (Jaffrey) ; New York (Binghamton, Canajoharie, 

 Greene Co., Ithaca, McLean Reservation in Tompkins Co., Oliverea 

 in the Catskills, Oneonta, Poughkeepsie, and Syracuse) ; North Da- 



