11»0 rnacKKJUSGS or rm: SATinyAi museum. toum. 



the season ot'ovipositioii. The return Hijflits in the ''teinp<>rary region" 

 begin tVom tlie .Ith to the 10th of May in latitude 35^, and about four 

 days hiter witli earh de^nee fartlier north. Mr. Kih'y, from whoa*' 

 aecounts these statements are drawn. ^iv«*s a \o\\\* list of plants and 

 trees attacked by this locust and its preferences anion;; them.' 



7. DEVASTATOR SEIMES. 



This jiroup is «-onjiM»sed of very closely related spe<'ies. often difticult 

 to distinguish, in which the male pn)Zona is quadrate or subt|uadrate, 

 and the immature markings on the lateral lol)esof the i)ronotum, char- 

 acteristic of the young <>f Melanoidus, occasionally persist in the adult 

 and especially in the female; the interspace between the mesosternal 

 lobes of the mah* is always longer than broad, varying from a little mon* 

 than half as long again to a little more than twice as long as broad. 

 The tegmina are always fully developed and generally maculate; tin* 

 hind tibiae are variable in color, often within the species, and hav** 

 from nine to thirteen spines in the outer series. 



The supraanal plate is similar to that of the femur-rubrum series, 

 but less constricted in the middle ami shorter: the furcula consists ot 

 a ]»air of i>arallel or subparallel. tapering, tolerably long, generally 

 flattened, acuminate lingers; the cerei are very simple, rather small. 

 not reaching the tip of the supraanal jdate, slender and subecjual. 

 tapering feebly in the basal half, equal beyond, bluntly roun<led at tii». 

 and a little incurved, generally slightly sulcate or dimpled apically on 

 the outer side; the subgenital plate is broad, of subequal breadth, but 

 slightly broader at base tlian at tip. apically elevated and the ajucal 

 margin well rounded, thickened, and weakly notched. 



The insects are of small or medium size, and the s[)ecies. eight in 

 nund)er, are separable with dithculty. They are contine<l almost 

 exclusively to California, a single one of them only occurring also a 

 little beyond its boundaries in the neighboring regions. It is the char- 

 acteristic groui) of the Pacific coast. 



28. MELANOPLUS DIf' INUTUS. new species. 

 ( Plate XII, tig. 9.) 



Dark brownish fuscous with a ferruginous tinge. Head somewhat 

 piominent, brownish testaceous, more or less, generally profusely, dot- 

 ted with fuscous, and a fuscous band behind the eyes; vertex rather 

 tumid, somewhat elevated above the pronotum; interspace between 

 tlie eyes not very broad, equal to (male i or slightly broader than (female) 

 the first antennal joint; fastigium steeply declivent. deeply sulcate 

 throughout; frontal costa fading out halfway between the ocellus and 

 clypeus. distinctly contracted above, equal elsewhere ami broader thaw 

 (nmle) or as broad as (female) the interspace between the eyes, scarcely 

 sulcate but with prominent margins, seriately punctate at the sides; 



' First report of the Kntomoloiju'al Commission, pages 251-252. 



