WALSH DESCRIPTIONS OF N. AM. HYMENOPTERA. 7 1 



adjoins the outer discoidal cell, a small, internal semi-bulla not encroach- 

 ing on the vein itself. Length $ .52 inch. Front wing $ .42 inch. Ovi- 

 positor .23 inch. 



The c? differs from the $ only as follows : — i. The black space above the 

 antennae is confluent with the black cloud around the ocelli, leaving on the 

 front only the orbits rufo-sanguineous. 2. The antennae are | as long as 

 the body ; the yellow color on their middle extends nearer to the tip ; and 

 the 1st joint of the flagellum is only thrice as long as wide. 3. The tuber- 

 cles on abdominal joint i are more robust than in $. The abdomen is 

 black, except joint 8, which is retracted, and the penis, both of which are 

 rufous; and the venter is blackish, except the base of joint i, which is whit- 

 ish. Length (^ .50 inch. Front wing c? .45 inch. 



One (? , one $ , taken on umbelliferous flowers in July. The c? 

 may perhaps be Banchus c^quatus^ Say, but the mouth and orbits 

 are not "yellow" but rufo-sanguineous ; there is no "whitish dot" 

 on the stigma but only a paler stain ; and the tegulae is not "honey- 

 yellow" but piceous. The 4. anterior legs are also described by 

 Say as "honey-yellow," whereas in my species their femora are 

 rufous and their tibiae and tarsi yellow, to say nothing of the black 

 coxae. Say may have described from an alcoholic specimen, in 

 which, as usually happens, the sanguineous color had changed to 

 yellowish. I have very numerous specimens of his Hylotoma scu- 

 tellata^ both c? and $ , the pale color in all which is bright san- 

 guineous, while Say describes it as "reddish yellow." I have also 

 two specimens of his Podabrus tricostatus (Coleoptera), in which 

 the lateral edges of the thorax are sanguineous both in the recent 

 and in the dry individual, while Say describes them as "yellow" 

 or " rufous." Dr. Velie brought from Colorado two pinned and 

 numerous alcoholic specimens of a beautiful new species of (Edi- 

 poda (Orthoptera), allied to sulphurea, Fabr. In the former the 

 w^ings are a deep, full scarlet ; in all the latter they are a dingy, 

 very pale salmon-color. Authors that are unfortunately compel- 

 led to describe from alcoholic specimens, should state the fact ; 

 otherwise their colorational specifications are generally more or 

 less unreliable, grass-green after immersion in alcohol often chang- 

 ing to brown, and sanguineous to yellow or salmon-color. I can- 

 not even g^ess what Say intended by saying of his Banchus cequa- 

 tus "hypostoma with two slight lobes situated longitudinally" 

 unless he refers to the cheeks, which are, of course, situated trans- 

 versely^ although in my rujiceps each of them is longitudinally 

 elongated in consequence of the abnormal prominence of the 

 whole mouth. 



