Mr. R. Shelford's Studies of the Blattidae. 303 



1. D. grosse-punctata, sp. n. 



? . Above piceous ; lateral and posterior margins of all the tergites, 

 anterior margin of pronotum, bright ochreous. Thoracic tergites 

 deeply and closely punctate, abdominal tergites smooth. Beneath 

 uniformly flavo-testaceous. Vertex, antennae except the basal joints, 

 maxillary palpi, upper border of femora, the tibiae and tarsi, 

 piceous. Anterior and lateral margins of pronotum, lateral margins 

 of meso- and metanotum strongly incrassated, the jiosterior angles 

 strongly produced backwards. Supra-anal lamina faintly scabrous, 

 trigonal, margins entire, apex not emarginate, not exceeded by the 

 cerci which are ochreous above and castaneous below. 



Length 23'5 mm. ; pronotum 7'3 mm. x lO'l mm. 



Habitat unknown (Oxford Mus., type). 



A very distinct species, undoubtedly Australian in origin. 



2. D. michaelscni, Shelf. 



Desmozosteria michaelscni, Shelford, op. cit., p, 139, PI. 

 XIII, fig. 9 (1909). 



West Australia, Boorabbin {Miclwrlscn and Hart- 

 meyrr), (Hamburg Mus., type). 



3. D. cincta, sp. n. 



$ . Above nitid, castaneous, posterior margins of all the tergites 

 and the lateral margins of the thoracic tergites ochreous ; beneath 

 sordid testaceous. Occiput and vertex of head castaneous ; antennae 

 with basal joint castaneous, remainder piceous, maxillary jjalpi 

 piceous. Lateral margins of thoracic tergites strongly incrassated, 

 discs finely punctate, posterior margins convex. Supra-anal lamina 

 sub-quadrate, angles rounded, non-emarginate, barely exceeded by 

 the cerci which are testaceous. Femora and tibiae rufo-castaneous 

 on the dorsal aspect, testaceous on the ventral aspect. 



Length 26'6 nun.; pronotum 8'4 mm. x 12 mm. 



Central Australia {v. Leonharcli), (Senckenberg 

 Mus., type). 



Superficially the insect closely resembles Anamesia 

 2)olyzo7ia, Walk. 



4. D. rufescens, Shelf. 



Desmozosteria rufescens, Shelford, op. cit., p. 140 (1909). 

 West Australia, Denham {Michaelsen and Hart- 

 meyer), (Hamburg Mus., type ; Oxford Mus.). 



