264 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



trunk a continuation of the darker pronotal areas, beyond this with 

 veins paler, dresden brown, but intervening areas chestnut-brown. 

 Mesonotum and metanotum ochraceous-buff. Abdomen dorsad 

 shining blackish brown, the broader tergites narrowly margined 

 laterad with ochraceous-buff and with weak, paired, small buffy 

 flecks mesad. Cerci blackish brown, becoming buffy disto-dorsad. 

 Limbs light ochraceous-buff with an orange tinge, very narrowly 

 marked with prouts brown at bases of spines, tarsal joints each heav- 

 ily suffused with prouts brown distad. Ventral surface of abdomen 

 shining blackish brown, narrowly margined laterad with ochraceous- 

 buff, this including the proximal portion of the subgenital plate. 



In a large immature female before us the coloration is much darker. 

 Dorsal surface, except hyaline lateral portions of thoracic segments, 

 which are tinged with dresden brown, blackish brown, this slightly 

 deeper laterad, with slightly paler flecks on the broader abdominal 

 tergites. 



Length of body" 13.1-13.3, length of pronotum 4.1-4.2, width 

 of pronotum 5.9-5.9, total length of tegmen'* 6.9-6.7, width of teg- 

 men 4-4.2, length of caudal tibia 5.3-5.5 mm. 



In addition to the type, a paratypic female and a large, immature 

 female, bearing the same data, as well as a paratypic female, with- 

 out further data than "Gran Chaco, " have been examined. 



Blattella germanica (Liauaeus) 



1767. [Blatta] germanica Linnaeus, Syst. Nat., Ed. XII, p. 668. [Denmark.] 



Villa Lutecia, near San Ignacio, Misiones, Argentina, March 

 and April, I 9 . 



Rio Parana, IX, 29, 1897, 2 d", 2 9 with oothecae, [Hebard Cln.]. 



Buenos Aires, Argentina, 1 juv. cf. 



Litoblatta brasiliensis (Brunner) Plate X, figures 14, 15, 16 and 17. 



1S65 I[schnoptera] hrasiliensis Brunner, Nouv. Syst. Blatt., p. 130, pi. Ill 

 fig. 12. [, 6 Brazil.] 



Colonia Florencia, Rio Tapenaga, Chaco, Argentina, Icf. 



Icano, Santiago del Estero, Argentina, 14 cf , 3 9 • 



Las Garzas, Rio Las Garzas, Santa Fe, Argentina, 1 d^. 



Cruz del Eje, Cordoba, Argentina, 1 9 , [Hebard Cln.]. 



Cordoba, Cordoba, Argentina, (F. Schultz), 2 cf, [Hebard Cln.]. 



San Rafael, Mendoza, Argentina, 680 meters, February, Icf , 19. 



The new genus Litoblatta is erected to include this species on page 

 237. We have there placed Loboptera laurenziana Giglio-Tos in 

 synonymy as representing the female sex of this species. 



8^ The measurements of the type are given first. 



8* The exposed length of these organs is slightly over one millimeter less. 



