On new Coleoptera from Madagascar. 409 



Fig. 17. A fusiform hyaline fibre, showing a central cavity (nucleus) 

 with a small spherule (nucleolus) (X 435). 



Fig. 18. The hilum of a globate, with its contained nucleus. The nucleus 

 exhibits a distinctly double contour, fluid contents, and a spheri- 

 cal uucleolus (x 435). 



Fig. 19. A globate cell after treatment with dilute potash (5 per cent.), 

 showing separated cell-wall and contained nucleus (X 435). 



Fig. 20. Transverse section across rind and sitbjacent mark, showing an 

 incurrent chone opening by a sphincter protruding into a rugose 

 incurrent canal (;'), and the smallest branches of the excurrent 

 canal (e) terminating close to its walls (X 7^). 



Fig. 21. A fragment of mark containing a granular mark-cell (m) and a 

 globate cell (s) ( X 435). 



Fig. 22. The smallest or earliest stage of globate yet observed (X 435). 



Fig. 23. A ciliated chamber (x 435). 



Fig. 24. The tubercular surface of a globate, seen face on, showing the 

 large axial canals perforating the tubercles (X 435). 



Fig. 25. Longitudinal section of the terminal branch of an excurrent 

 canal (e) with its canaliculi ending in ciliated chambers : i, the 

 ultimate branch of an incurrent canal supplying the ciliated 

 chambers (x 157). 



Fig. 26. An iris-like diaphragm from one of the rugose incurrent tubes, 

 seen face on ( x 60). 



Fig. 27. Transverse section of an incurrent tube, from which canaliculi 

 proceed and enter the ciliated chambers (x 204). 



[To be continued. 



XXXVIII. — Neio Genera and Species of Coleoptera from. 

 Madagascar. By Charles O. Waterhouse. 



A COLLECTION of Coleoptera recently received at the British 

 Museum from Madagascar has brought to light several new- 

 species, which I here describe, with some also which were 

 received from former collections. 



Cetoniidse. 

 Parachilia comipacta, n. sp. 



Nigra, opaca ; elytris obsolete punctatis, marginibus obscure piceis ; 



pedibus nitidis. <$ , 5 . 

 Long. 13 lin. 



Very close to P. bufo, G. & P., but differs in being consi- 

 derably shorter, less narrowed posteriorly, and with the elytra 

 apparently constantly margined with purple-pitchy colour. 

 The legs are shorter, and the difference in the length of the 

 tarsi is very great in the male ; in P. bufo the posterior tarsi 

 are longer than the tibiae by the two apical joints, whereas in 

 P. compacta the tarsus is only about half the apical joint longer 



