124 Dr. H. Scott's Notes on biology of some inquilines and 



are dorso-latcral in position until the 7th and 8th seg- 

 ments, where, they form tlie lateral outline of the body 

 viewed from above, and on the 8th segment conceal the 

 spines of the outer series from dorsal view. In addition 

 to these two series, there is a pair of long, curved, anal 

 spines. Under a high power the spines on the knees and 

 some of those on the prothorax were seen to bear a fine 

 hair projecting from the outer side near the base. The 

 mid-dorsal line of the abdomen, and the two dorso-lateral 

 lines formed by the imier series of spines, are faintly 

 marked by very slightly raised ridges in the cuticle, 

 indicated in fig. 8 a by dotted lines. 



CoMrARisoN WITH OTHER NiTiDULiD PuPAE. — Perris 

 does not figure the pu]ia of E. ohsolefa but describes it as 

 having " des soies blanches" round the prothorax, on 

 the sides of the abdomen, and on the knees. These are 

 just the positions where the spines occur in the pupa of 

 E. depressa, and I carmot help thinking that the pupa 

 of E. obsoleta is probably closely similar, and that had 

 Perris examined his pupae under a higher power, he might 

 have described the processes as spines rather thai\ as 

 " soies blanches." 



The only other Nitidulid pupa of which I have examined 

 specimens is that of Povadius ferrvgineus. It has spines 

 in the same situations as that of E. depressa, except that 

 there are none on the head or knees, and those of the 

 inner abdominal series are not developed on the first 6 

 segments. There are setae on the knees in exactly the 

 same position as the spines of E. depressa. The spines in 

 Pocadius are more slender and weaker : the terminal portion 

 is simply a fine seta rising abruptly from the truncated 

 stouter proximal part. 



Perris also alludes to the cast larval skin clinging to the 

 hind end of the abdomen of the pupa of E. obsoleta. As 

 stated above (p. 105), this is not the case with any of my 

 four pupae of E. depressa now, nor do I remember the larval 

 exuvium being jiresent when I placed them in spirit. 

 Neither have I observed it attached to the pupae of 

 Pocadius. Ganglbauer (12) gives the retention of this 

 exuvium round the hind end of the pupa, or its absence, 

 a rather prominent place in his definitions of certain of 

 the Clavicorn families. 



