APPENDIX C. — INSECTS. 369 



HEMIPTERA. 



Cicada REf, Hald. 



Pl. IX. Fig. 17. 



Yellow, varied with black, sericeous beneath. Head yellow, 

 pypostoma brown ; the medial line yellow, and unimpressed, and 

 the transverse ridges undulate ; eyes connected by a broad trans- 

 verse band. Pronotum yellow, with a narrow Y-shaped line 

 divided to the base, a narrow transverse lateral spot on each 

 side posteriorly, and another anteriorly, immediately behind the 

 lateral stemmata. Mesonotum black, with a large lateral elon- 

 gated yellow spot, and a pair of similarly coloured medial spots 

 in the shape of the Hebrew letter resli inverted, and the points 

 converging anteriorly upon the medial line ; tergum dark brown. 

 Wings with the nervures yellow to beyond the middle, when they 

 become dark brown or blackish. The usual W-shaped mark is 

 present ; beneath and feet yellow ; metasternal spines rather large ; 

 spines of the feet and apex of the tibial tinged with brown. Length 

 of the body fourteen, to the end of the upper wings twenty-two 

 lines ; width of the prothorax seven lines. A large and handsome 

 species, from the Great Salt Lake Valley. 



Cicada striatipes, Hald. 



Pl. IX. Fig. 16. 



Above black, varied with a little yellow ; beneath yellow, more 

 or less primrose, particularly beneath. Head black, with a small 

 yellow spot above the antennae ; hypostoma prominent, with the 

 medial line yellow, and strongly impressed. Pronotum black, 

 margined with yellow posteriorly, primose, and indistinctly lateral. 

 Mesonotum black, with four small yellow spots, two connected- 

 with the scutel, and two central, one on each side of the medial 

 line ; lateral margins and scutel yellow, two raised yellow lines 

 extending laterally from the latter. Tergum black, with the apex 

 and margins of the segments yellow. Elytra and wings with tlie 

 nervures yellowish- white ; those of the exterior cells blackish; the 

 basal portion, which is doubled beneath in repose, is orange. That 

 of the posterior alulet extending half its length and ending in a 

 narrow fuscous band; base of the superior wings with a black 



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