On the Genus Grammatodon, 47 



lected by the late Mr. G. L. E. Andrese, to whom the species 

 has been dedicated. 



Signoret founds his Monophlebid genus Walkeriana upon 

 a single species from Ceylon, W. floriger of Walker. He 

 has made the generic description so minute and close, including 

 even colour and relative lengths of antennal and crural joints 

 &c, that it is really more suitable for specific use, and would 

 exclude anything but the typical species. I think it advisable 

 to widen the generic characters, to admit what are evidently 

 specifically allied insects. I have at least four other species 

 from Ceylon that I propose to place in this genus. 



EXPLANATION OF PLATE V. 



Fig. 1. Female insect, dorsal view, showing waxy processes as in life. 



Fig. 2. Ditto after maceration, showing spiniferous tracts. 



Fig. 3. Antenna. 



Fig. 4. Part of one of the marginal spiniferous tracts, showing (a) tubular 

 spines, (b) collared hair, (c) glandular pores. 



Fig. 5. Part of skin, showing (a) glandular pores from border of spini- 

 ferous tract, (b) larger pores with circular orifices. 



Fig. 6. Foot. 



Fig. 7. Eye. 



VI. — Note on the Genus Grammatodon, Meek and Hayden. 

 By H. Woods, M.A. 



The genus Grammatodon was founded by Meek and Hayden 

 on a species of "Area" from the Jurassic of the Black Hills. 

 The name, with a reference to the type species, was published 

 in 1860, but no diagnosis of the genus was given until 1864. 

 The type species is Area (Cucullcea) inomata, Meek and 

 Hayden, Proc. Acad. Nat. Sci. Pliilad. 1858, p. 51. 



In their description the authors state that Grammatodon is 

 closely allied to Macrodon, Lycett. The type of the latter 

 genus (Cucullcea hirsonensis, d'Archiac) differs from most of 

 the other species in having the umbones placed very ante- 

 riorly. After comparing Grammatodon with a number of 

 species of Macrodon, I am unable to detect any differences 

 which could be regarded as of generic importance, and I 

 consider that the two forms are identical. 



It was pointed out by Meek and Hayden that the name 

 Macrodon had been previously used by Miiller (1842) for a 

 genus of fishes (Characinidee), and they proposed to substitute 

 for it Parallelodon ; this name has been adopted by some 



