1889.] 371 



1. — Periplaneta orientalis, Linne. 

 Blatta orientalis, Linne, Fauna Suec., No. 862 ; Syst. Nat., ii, p. 688. 

 Periplaneta orientalis, Burineister, Handb., ii, p. 504 ; Fischer, Orth. 

 Europ., p. 114, tab. vii, figs. 22 — 26 ; Brunner, Prod, der Eur. 

 Orth., p. 49. 

 Head, thorax, and abdomen of a uniform dark chestnut-brown, paler where 

 covered by the elytra. Elytra and wings in J fully developed, subtruncate at the 

 apex, not covering the abdomen. Wings ferruginous anteriorly, hyaline posteriorly 

 subtruncate at the apex. In $ elytra lobiform, with the veins indicated. Wings, 

 rudimentary. Legs ferruginous. Supra-anal plate in $ nearly straight posteriorly ; 

 in $ produced into two lobes, divided by a deep notch. Egg capsule with the suture 

 dorsal. Length, 20 — 25 mm. 



This cosmopolitan species is ubiquitous.. 



2. — Periplaneta Americana, Linne (fig. 2). 

 Blatta aniericana, Linne, Syst. Nat., ii, p. 687. 



Periplaneta aniericana, Burin., Handb., ii, p. 503 ; Fischer, Orth. Eur., 

 p. 116 ; Brunner, Prod, der Eur. Orth., p. 50, fig. 11. 

 Of a general ferruginous colour. Pronotum with a pale band within the mar- 

 gin, most marked posteriorly and laterally, sometimes continued all round. Disc of 

 the pronotum ferruginous, fading into the yellow band, and sometimes divided into 

 two portions by a pale process running backwards from the band. Elytra and wings 

 longer than the abdomen in both sexes. Elytra in $ acuminate, in $ slightly 

 truncate at the apex. Supra-anal plate in both sexes triangularly notched, pellucid 



in $ , ferruginous in $ . Egg capsule ferruginous, with the suture dorsal. 



Length, 28—40 mm". 



This cockroach is a pest on board many ships, and is found in 



warehouses in most continental ports. In England I have seen it in 



abundance in some of the houses of the Zoological Society's Gardens, 



and have heard of its occurrence in warehouses in London, Dover, 



Goole, &c. As its name implies, it is a native of America. 



3. — Periplaneta australasije, Fabr. 



Blatta austral a sice, Fabr., Ent. Syst., ii, p. 7. 

 Periplaneta australasice, Fischer, Orth. Europ., p. 117. 



Head chestnut-brown, with a yellow ring surrounding the insertion of the an- 

 tennae, and a small longitudinal yellow clash between the eyes. Pronotum chestnut- 

 brown, with a bright yellow band within the margin, running all the way round, 

 but broadest posteriorly, yellow band distinctly separated from the dark part of the 

 pronotum. Elytra dark ferruginous, with the space between the mediastinal and 

 marginal veins yellow ; the rest of the elytra unicolorous, reaching beyond the apex 

 of the abdomen. Legs ferruginous, femora somewhat pale. Supra-anal plate deeply 

 notched posteriorly, with a central longitudinal ridge. Cerci dark ferruginous. 



Length, about 30 mm. 



This species is, perhaps, a native of Australia. Von Borck (Skand. 



