74 ORTHOPTERA. 



cc. Elytra ad basin costse flavo-vittata. Pronotum nigro-bimaculatum vel macula trans- 

 versa nigra, circumcirca vitta lsete flava, margine postico nigro, minus arcuato. — 

 2. australasiee, L. 

 bb. segmentum ventrale haud superans, rotundato-bilobata. Pronotum omnino castaneum vel 

 ut in P. americana obsolete pictum. Elytra tota castanea. — 3. truncata, Br. 

 aa. Mares. Lamina supra-analis : 



b. grandis, membranacea, producta, rotundata, fissa. Lamina infra-genitalis transversa, 



sty lis longissimis. — 1. americana, L. 

 bb. truncata, infra-genitalem haud superans ; styli mediocres. Lamina supra-analis : 



c. transverse truncata, utrinque rectangula. Lamina infra-genitalis in medio margine 



sinuato, rotundato-sub-bilobata. — 2. australasiee, L. 

 cc. transversa, angulis rotundatis. Lamina infra-genitalis margine trans verso vel sub- 

 sinuato. — 3. truncata, Br. 



l. Periplaneta americana, Linn. 



, M. Merian, Surinaams Ins. p. 1, t. 1 (1730). 



Periplaneta americana, auctt. 



Periplaneta brunnea, Burm. ; Brunner de W. 



Hab. Mexico ; Central America. — Tropical and subtropical regions generally. 



Var. a. Fere omnino fusco-castanea. Mexico, Mazatlan. — b. Pronoto flavo, nigro-bimaculato, margine toto 

 angustissime fusco (cum P. australasiee facile confunditur). 



2. Periplaneta australasiae, Fabr. et auctt. 

 Hab. Tropical America. — India ; Australasia. 



3. Periplaneta truncata, Brann. 



Periplaneta truncata, Brunn. de W. in litt. ; Krauss, Syst. Verz. der canariscben Dermapteren und 

 Orthopteren [Zoologischer Anzeiger, xv. p. 165 (1892)]. — $ S • 



Var. a. Tota castanea. — b. Pronoto flavicante, fusco- vel rufo-bimaculato, marginibus anguste fuscis ; elytrorum. 

 costa basali haud flavo-vittata. — c. Pronoti disco toto flavido, circumcirca fusco-limbato. 



Hab. Mexico, Atoyac in Vera Cruz (Schumann). — Brazil. — Australasia, New 

 Britain (Brunner) ; Africa, Teneriffe (Krauss). 



This insect appears to have been obtained originally in Australasia. Like P. aus- 

 tralasiee, it has probably been conveyed to various distant parts of the world, including 

 Brazil and Mexico. It is apparently as yet a rare insect in America. Mr. Schumann 

 found a siDgle ( 6 ) example at Atoyac in Eastern Mexico. 



