414 A. E. Verrill— The Bermuda Islands. 826 
the body, ferruginous-brown, paler at the anterior or basal margin, 
and with a short humeral black line ; prothorax brownish black, the 
anterior margin testaceous; vertex of head blackish. A variety 
from Bermuda, according to Saussure, has the thorax brownish black 
_ with a testaceous line on each side of the anterior margin. 
Widely diffused in the West Indies and East Indies; New — 
Orleans ; Paris, France (Sauss.); 8. America ; St. George’s, Nov., L. 
Mowbray, var. 
In this genus the prothorax is roundish, not truncated posteriorly» 
but convexly arched or angulated in the middle. 
Madeira Cockroach; “ Knocker.” (Panchlora Madere (Oliv.) 
Sauss.) 
This large species is very common in storehouses. When mature 
it is nearly 2 inches long (48™™), including the elytra, which extend 
about 8™™ beyond the end of theabdomen. It is fuscous or yellowish 
brown, the elytra paler or more yellowish than the body. The pro- 
notum is short and broad, ornamented with a double row of dots, 
which form a lyre-shaped or V-shaped figure with the angle rounded ; | 
or sometimes it is shield-shaped. Supposed to be of African origin, 
but now widely diffused in the East and West Indies; Africa ; 
South America ; Mexico, etc. 
This is probably the species called by the Bermudians ‘“ Knocker”’ 
or “Drummer,” owing to the loud noise that it makes at night. 
At least it was the only large species that I found in places where 
the noise had been heard. This name and the noise have, however, 
usually been attributed to a different and larger species (Blabera 
gigantea (L.) Sauss.) in the West Indies, but I am not aware that 
the latter has been found in Bermuda. Possibly several large species 
have the power of making the same noise. This was first recorded 
by Uhler, from Heilprin’s collection. Probably other undetermined 
species of cockroaches occur in Bermuda. 
Water Bug ; Croton Bug. (Ectobia Germanica (L.) Steph.; Scud.) 
FIGURE 201. 
We were told that this small species occurs in some dwellings, but 
obtained no specimens. It is widely diffused in most countries. 
Ceratinoptera diaphana Brunn.; Sauss., Mex. Rech. Zodl., vi, p. 20, 
Follett, siley, Hy IO, 
Recorded by Jones, 1876, from specimens identified by 8. H. Scud- 
der. A small cockroach, native of the West Indies. 
