». 1124. HEMSIOS OF THE MELANOPLl-^aCVUDEH. 19 



all exceeding? in h'li^th tlit* i>roiiotnin. rnuiotuni erilar<;iii^' n'jjuljirly 

 HI «l slij^htly (inaU*)o'* <;oiisi<l«'nil>Iy (tVmjiIr) from in t'nmt backwanl, tlni 

 i\\^\i ncjirly j»lane, si'panittMl by ])ernirrent latt'ral cariiiao (as <listiiirt 

 B> the iierrurnMit iiu'dian nirina) from tlie siilivcrtical lati'ral lobes, tlio 

 fi.iut an<l liinil bonier tniiirate or sul>trinu*at«*, the nearly smootli 

 j)!o/ona lesH than twiee as hnx)* as the rather feebly punctate meta/ona, 

 litther longer than broa<l, divitlrd in th«i middle by a feei)le transverse 

 i;ii Iras, followed at less than half the distance to the metazona by a 

 doubly arcuate sulcus at least as distinirt. Prosti'rnal spine erect, 

 Viiiiable; mesosternal lobes separated by an interval which issub(|uad- 

 rate but a little transverse and nearly as broad as the lobes in the 

 lii;ile, strouLdy transverse and broader than the lobes in the female, the 

 Birtasternal lobes subapproximate in both sexes. Tejjmina elliptical. 

 Hot wholly lateral, shorter than the i)ronotum. Fore and middle femora 

 tumid in the male, the hind temora moderate, <*ompresscd, the hiiul 

 tibiae with O-ll spines in the outer series. Kxtremity of the male 

 abd<mjeii u|>turned and slightly enlarged, the subgenital plate strongly 

 produced and elongate, its lateral nuirgins feebly convex, meeting api- 

 eally at an acute angle which is provided with a slight tubercle and is 

 removed at a h>ng distance from the tip of the supraanal plate; furcula 

 developed slightly or uioderately; cerci very long and very slender, 

 laminate, directed inward apically. 



Two species are known, coming from Mexico, Central America, aud 

 Borthoiu South America. 



ANALYTICAL KEY TO THE SPECIES (iF rARADICnUOPLUS. 



Prosternal Rpine quadrate, appresseil, trnncato; posteriorinargin of pronotuni feebly 

 ainar;ijinato; inner edges of tegniina separated l»y half the width of the pronotum; 



ftircnla wtdl deveh)ped 1. mexicantis (p. 19). 



Prosternal spine conical: posterior niarjriu of pronotum «'ntire; inner t-d^es of 

 tegmiuasubattiugfut; furcula very slight 2. rarico/or (p. 21). 



I. PARADICHROPLUS MEXICANUS. 

 (Plate II, figs. 4, 5.) 



Platyphyma neTtcanum Brunner, Vcrhandl. Zo<d.-Bot. Gesellsch. Wien, 1861 



(IS61), p 224; Orth. Stu . (1864), p. 4.— Walkek, Cat. D.rm. Salt. lirit. 



Mus., Suppl., V (1871), p. 71.— THO.MAS, Rep. U. S. Geol. Surv. Terr., V (1873), 



p. 224. 

 Caloptenii8 mexicanua Walker, Cat. Derm, Salt. Brit. Mus., IV (1870), pp. 682- 



683.— Thomas, Kep. U. S. Geol. Surv. Terr., V (1873), p. 227. 

 Paradichroplus meximnus Brunnkr, Rev. Syst. Orth. (1893), p. 115. 



I 



Blackish fuscous above with a strong ferruginous tiuge, dull flavous 

 below. Head with tumescent genae plumbeous or livid, more or less 

 b€»vily mottled with ferrugineo fuscous, the summit wholly blackish 

 fuscous, separated from a broad blackish fuscous band behind the eyes 

 by a lighter but obscure stripe behind the upi)er part of the eyes; 

 flrontal costa rather prominent above, especially in the male, punctate. 



