266 north american blattidae 



Blattinae 



Platyzosteria bifida (Saussure) 



1872. P[olyzostei'ia] bifida Saussure, Melang. Orth., ii, p. no. [ o^ ; Queensland, 

 Australia.]. 



This insect suggests a flattened, unicolorous, dark Periplanetid; 

 closer examination, however, shows the very different features of 

 the genus, while the species is distinctive in the genitalia and the 

 extraordinarily specialized maxillary palpus of the male. 



That an individual of the Australasian group to which this 

 insect belongs should be brought to America, shows how very 

 widely roaches may be distributed by commerce. ^^- 



Fairbury, Nebraska, VIII, 1893, (in bananas), i cf , [Hebard Cln.]. 



Eurycotis^'' caraibea (Bolivar) 



1888. P[olyzosteria] caraibea Bolivar, Mem. Soc. Zool. Fr., i, p. 126. [cf, Cuba.] 

 This medium-small, pale, Cuban species is distinctive in having, 

 with the black interocular band and two black disto-dorsal ab- 

 dominal segments and supra-anal plate, the tegmina quadrate but 

 not attingent. 



Ithaca, New York, VII, 9, 1895, (in bunch of bananas), i cf . [Hebard Cln.]. 

 Berwick, Pennsylvania, VIII, 25, 190S, i d^,*'^* [Pa. State Dept. Zool.]. 



Eurycotis tibialis Hebard 



1916. Eurycotis tibialis Hebard, Ent. News, xwii, p. 261, pi. xiv, fig. 2, text fig. 

 [cf, 9 ; San Francisco Mountains, San Domingo; adventive at Orono, Maine.] 



This blackish species, having subtriangular lateral tegmina, is 

 known only from the material originally discussed. 

 Orono, Maine, i 9 , [Morse Cln.]. 



■"- Shelford has recorded a specimen, evidently an adventive also, from Brazil. Trans. 

 Ent. Soc. London, 1909, p. 274, (1909). 



^'■■' The questioned record of an immature example as Eurycotis fin schiana (Saussure), 

 adventive in the United States, is here definitely referred to Nyctibora laevigata (Beauv.). 



••^ This specimen differs from the description of the species and the other individual 

 before us, in having the tegmina decidedly reduced in width and consequently more 

 lateral, with intervening space decidefiiy greater than the width of a tegmen. In other 

 respects the specimen is so fully typical, that this difference seems best attributable to 

 individual variation. 



