Mr. R. Shelford’s Studies of the Blattide. 465 
at aright angle. Wings not longer than tegmina; marginal area 
with a castaneous “‘stigma” formed by the incrassated branches of 
the mediastinal vein and by the five incrassated costal veins, the 
internervular spaces also being castaneous. Coxz castaneous. 
Total length 5 mm.; length of tegmina 4 mm. 
From Surinam. 
Brunner was the first to suggest that this species should 
be placed in the genus Anaplecta, and every other author 
has followed this lead without question. De Geer’s figures 
are certainly too small and ill-defined to enable one to 
guess correctly at the systematic position of the species. 
lil. SPECIES DESCRIBED BY THUNBERG. 
The papers in which Thunberg described new species of 
cockroaches are :— 
1. Dissertatio Entomologica novas Insectorum species 
sistens. Part iv, pp. 76-78, Uppsala, 1784. 
2. Nagra nya species af Blattae—sligtet beskrifna. 
Vetensk. Acad. nya Handl. vol. 31, pp. 185-189, pl. 5, 
1810. 
3. Blattarum nove species descriptee. Mém. Acad. St. 
Pétersb., vol. 10, pp. 275-293, pl. 14, 1826. 
The second of these two papers containing the 
descriptions of seven new species has entirely escaped the 
notice of every subsequent authority on the Blattide ; 
this neglect is rather remarkable, seeing that the paper 
was published in a well-known scientific journal, was 
furnished with a plate, and was referred to by Thunberg 
in a later memoir which is well-known to every ortho- 
pterist, viz., * Hemipterorum maxillosorum genera illustrata. 
Mém. Acad. St. Pétersb., vol. 5, pp. 211-801, pl. 3, 1815. 
It affords me considerable satisfaction to bring about the 
resurrection of this forgotten memoir, especially as this 
involves no startling changes in nomenclature. In his 
Dissertatio Entomologica de Hemipteris maxillosis Capen- 
sibus, Uppsala pp. 1-8, 1822, Thunberg enumerates four 
species of Blatta, but all of these have been described 
previously, either by himself or by Fabricius, and as the 
* A manuscript copy of this memoir from the library of Audouin 
is in the Hope Library, Oxford Museum. 
