152 [June 



extreme tip above a narrow white line and a minute white dot on each 

 side of it ; basal foxese of the second segment deep ; apical segments 

 smooth and shining ; ovipositor not exserted. Length 6^ lines ; ex- 

 panse of wings 11 lines. 



Hab.— Delaware. Dr. Thos. B. Wilson. 



Differs from Ich. ofiosus Say, by having a white spot on each side 

 of the clypeus, by the absence of the lines on the disk of the thorax, 

 by the different coloi'ation of the legs, by the absence of the lateral 

 spots on the metathorax and by the different shaped central ai-ea. which 

 in ofiosus is transverse, rounded in front and deeply indented behind. 



The following species also belong to this Section : — Irh. uni/asriafo- 

 rius Say, Ich. ott'osus Say, Ich. navus Say and Ich. pulchcr liruUe, 

 all of which are known to me, except the last. 



Section o — c. 



28. Ich. apicalis, n. sp. 



Black ; face yellow ; scutellum pale ; legs and apex of abdomen fulvous : 

 wings subhyaline : central area of metathorax large, quadrate, indistinct. 



Male. — Head black, the face beneath the antennas, frontal orbits, 

 clypeus, mandibles except base and apex, and the palpi, yellow : an- 

 tennae rather more than half the length of the body, black, the basal 

 joint beneath yellow. Thorax black, shining, closely punctured ; tegulfe, 

 a spot before and a line beneath the wings, yellow ; scutellum i-ather 

 flat, smooth and shining, black, with a subquadrate, obscure yellowish 

 spot ; metathorax roughly punctured, opaque black, the elevated lines 

 tolerably distinct, the central area quadrate, not well defined. Wings 

 fusco-hyaline ; nervures fuscous, pale at base, stigma fulvous ; areolet 

 5-angular. Legs fulvous, anterior and intermediate cox» black above, 

 yellow beneath, the posterior pair entirely black ; the four anteriijr legs 

 yellowish in front. Abdomen black, elongate, minutely punctured ; 

 first segment finely aciculate, bilineated, the foveae of the second seg- 

 ment profoundly impressed ; second, third and fourth segments opaque, 

 the apical ones smooth and shining; last segment fulvous; beneath 

 blackish, with the middle of the 2nd and three following segments 

 pale yellow, the apical ones fulvous. Length G lines ; expanse of wings 

 11 lines. 



Hah. — Rocky Mountains, Colorado Territoi-y. 



