June, I9I3] AlDRICH : NORTH AMERICAN SpECIES OF LiSPA. 139 



to the front; vibrissse strong; palpi as in the male. Thorax gray with two 

 well-defined narrow blackish stripes destitute of hairs inside of the dorso- 

 centrals, not continuing much back of the suture ; outside the dorsocentrals 

 a less distinct stripe. Abdomen gray with a black median stripe extending to 

 the fourth segment. Hind tarsus as long as the tibia. Length, 6.8 mm. 



One male, two females, Cohasset, Mass., Sept. 9, collected by C. 

 W. Johnson. 



This species is rather closely allied to salina, but in the male has 

 the hind tarsi shortened and the hind femora destitute of the very 

 long, almost woolly hairs of that species ; in the female the palpi are 

 larger, darker, and more hairy than in salina. 



The difference between johnsoni and the Central Asian cinifcra 

 is not easy to state, as in each the male is known only from a rather 

 poorly preserved specimen ; they are closely allied. 



Lispa tentaculata De Geer. 



Male. — Head 2.89 times the width of front, the latter narrowed somewhat 

 strongly below, the sides convex ; the narrowest point is below the insertion 

 of the antennae, and is about the same as the width of one eye at the widest 

 point (looking from straight in front) ; color of front black, indistinctly brown 

 on the ocellar triangle and narrowly forward from it, the orbits becoming 

 gradually yellow about the middle, which color continues down the side of the 

 face without interruption ; the fine hairs of the frontal orbit continue without 

 interruption down the side of the face; antennae black, second joint faintly 

 and narrowly yellowish at apex, third reaching nearly to the single bristle 

 above the vibrissa, arista rather long plumose ; face including its sides golden 

 yellow pruinose, the sides with a few fine hairs which extend almost to the 

 lower edge of the eye ; vibrissse strong, with some smaller bristles which are 

 more numerous and slender posteriorly ; palpi very large, shining pale yellow, 

 suddenly enlarged about the middle, the apical broad part with scattered 

 black hairs. 



Thorax black in ground color, grayish pruinose, sub-shining with a 

 median vitta abbreviated in front and two less distinct lateral vittse along 

 the dorsocentrals, at the extreme front two black vittae begin between these, 

 but fade away in a short distance. Chaetotaxy normal ; calypteres ivory white, 

 with yellow margins ; halteres dark yellow. A tuft of small black bristles 

 arises from just behind the metathoracic spiracle. 



Wings entirely normal for the genus. 



Abdomen very broad and flat ; the first segment grayish pruinose ; the 

 second segment with white pruinosity anteriorly on the sides, which changes 

 to yellowish and extends mesially and posteriorly so as to leave three areas 

 shining black — the hind part on each side and the middle part in front ; third 

 segment with a large definite white pruinose spot on each side against the 

 front border, and a median yellowish brown pruinose spot on the hind margin. 



