OF PHILADELPHIA. 67 



[Continuation, from Vol. 3, pp. 73 — 104.] 



3. Laphria macrocera. — First joint of the antennae elonga- 

 ted ; body black. 



Inhabits Pennsylvania. 



Body somewhat polished, with short, prostrate, grayish hair, 

 punctured ; antennae, first joint more than four times as long as 

 the second ; wings a little dusky, nervures nearly as in the prece- 

 ding species : poisers pale-yellowish ; feet black, tibia and base of 

 the tarsi pale testaceous ; tergum on each side and at tip margined 

 with testaceous. 



Length one-quarter of an inch. 



This insect closely resembles the preceding species, [74] but 

 the elongated first joint of the antennae, the want of white poste- 

 rior edges to the abdominal segments, together with the color of 

 the lateral margin and tip of the abdomen, prove it distinct. I 

 had formerly placed both this insect and the preceding under the 

 genus Dioctria, but the disposition of their wing nervures is pre- 

 cisely as in L. ephippium. 



4. L. SERiCEA. [Ante 1, 12.] 



5. L. TERGISSA. — Thorax and three middle segments of the 

 tergum with yellowish hair. [75] 



Inhabits Pennsylvania. 



Head black, vibrissae and long hair of the cheek pale yellowish ; 

 thorax dark blue, slightly tinged by cupreous, and covered by 

 pale yellowish hair, which, on the anterior part, and on the lat- 

 eral edge is tinged with ferruginous ; pleura blackish-piceous, with 

 two fascicles of ferruginous hair; wing nervures brown, margined ; 

 scutel blackish, ciliated with dusky hair ; feet blued-black, two 

 anterior pairs of tibia with yellowish hair, posterior thighs cla- 

 vate, anterior pair of coxae concealed by yellowish hair ; tergum 

 blackish, the three intermediate segments with dense pale yel- 

 lowish hair, which is interrupted in the middle, and does not oc- 

 cupy the basal edge. 



Length one inch and one-tenth. 



This is a large robust species, and the nervures of its wings are 

 arranged like those of L. cpluppium Fab. 

 1823.] 



