OIITMOPTK i; A L< >< -USTA i; i .!:. 233 



i irvllacris charpentieri lleer and (. ungeri Ilecr, as well as a reference to 

 the genus by Capellini of a species found in the Italian Tertiaries. A single 

 American species lias been found. (July, 1H84.) 



(JUVLLACKIS Serville. 



All tlit; Tertiary members of the family have been referred loosely to 

 this genus, and it is with the same looseness, necessary from its imperfect 

 state, that the single Florissant species is also referred to it. The presence 

 of this form at Florissant is indicative of a much warmer climate than 

 found at present in that latitude. (July, 1-S84.) 



GRYLLACRIS CINKRIS. 

 PI. 17, Fijr. 17. 



Though no Grvllacris proper and differing considerably even from the 

 fossil species which have been referred here, the only specimen is too 

 obscure to speak very positively of its affinities. The insect is of very 

 stout form, the head large, appressed. flattened behind, convex in front, the 

 eye tolerably large, twice as long as deep; the thorax stout, the abdomen 

 very stout, full, tapering apically, the legs rather small, the tegmina and 

 wings moderately ample, about as long as the body. Tegmina with a 

 nearly straight costal margin, a prominent shoulder near tin- base, the tip 

 well rounded and a little produced, the inner margin rather full : the medi- 

 astinal veins with their fan-like distribution occupy the basal third of the 

 costal border; the scapular vein terminates on the same margin a little 

 before the tip, and emits equidistant, parallel, oblique, superior branches 

 throughout its course; the externomedian runs parallel to the former : in 

 the latter half of the wing it emits inferior, longitudinal, parallel branches 

 which occupy the whole tip of the wing, and from before the middle a sin- 

 gle branch with "Me or two superior nervules parallel to the others ; the 

 nervules below this have also a longitudinal direction, but their attachments 

 are obscure The neuration of the hind wing is similar, but the mediastinal 

 and scapular areas are excessively narrowed, while the lower areas are 

 expanded as in most orthopterous hind wings. The plate is in error in 

 making the terminal portion of the externomedian vein branch from the 

 M-apular vein. 



