ADDITIONS TO THE COLEOPTERA OF NORTHUMBERLAND AND DURHAM. 38 



centre of the rosette consists of four or five cells, not very regular, so that there are 

 five in one case, four in another, then four or five rows of cells, having a thatched 

 appearance from the centre, so that the outer cells look as if they are pear-shaped, 

 but the narrow ends are covered by the next interior ring. In the centre, in or 

 beneath the central cells, are eight dark (in most lights but no doubt merely dark 

 as the result of refraction) lines, radiating from the centre, but starting at a little 

 distance from it, two opposite each other, and three on each side of the transverse 

 lines so formed, and a little further from the central point than these two. These 

 do not come out in the photograph. In the structureless zone round the rosette, 

 one fancies sometimes traces of cells exist and link up the micropylar cells to the 

 others, this seems doubtful. In the egg-shells mounted on slides the hexagonal ' 

 network of fine ribs is seen to extend quite to the base of the egg, though it is 

 practically impossible to see this in the living eggs. 



The egg of C. silviiiK differs from that of C. palaemon in being 

 smaller ; the long diameter, 0-72mm. ; the shorter, 0-63mm. ; height, 

 0-50mm. The difference in the two diameters is, therefore, pro- 

 portionally greater. The threads of the network are finer and more 

 delicate than in C. palaemon, delicate and difficult to see as they are in 

 that species. 



De8CKIption of Plate I. 



Photographs of Eggs of Cyclopides, from Heer M. Gillmer. 

 Fig. 1. — Four eggs of CycZopides paZagmo/i, one on side x 20 diameters. 

 Fig. 2. — Three eggs of Cyclopides silvius, side view x 20. 

 Fig. 3. — Same eggs, top view x 20. 



Description of Plate II. 



Fig. 1. — Micropylar area of egg-shell of Cyclopides palaemon focussed to 

 external surface. 



Fig. 2. — Micropylar area of egg-shell of Cyclopides palaemon focussed to 

 internal surface x 250. 



The black and white shown is a result of refraction, not of colour in the shell. 

 The ribs (in 1) are undoubtedly raised lines on the outside, and would appear 

 narrower with a slight variation of focus. The dots in fig. 2 are probably raised 

 points on the interior surface, but may be merely denser material (or even hollows) 

 in or close to the interior surface. A close comparison of figs 1 and 2 shows these 

 dots are arranged with some reference to the cells of network. 



Description of Plate III. 



Fig. 1. — Micropylar area of Cyclopides sylviiis, egg-shell focussed to inner 

 surface, a figure of the outer surface is not given, but the lines of its network are 

 suggested here by the arrangement of the dots more clearly than in the case of 

 palaemon. The cells of the micropylar rosette are seen to be much larger and 

 broader than those of C. palaemon and, occupying much the same area, have fewer 

 cells and in fewer rows. 



Fig. 2.— Micropylar area of A. Jiava. The cells of the rosette are larger and 

 narrower than in C. palaemon. The little black lines (again an effect of refraction 

 from slightly different material) mark the angles of the cells of the network much 

 like that in Cyclopides. Whether due to these eggs never having been laid or to 

 some other cause, I could not demonstate this netting, which was evident enough 

 in Cyclopides, but I see in some older mounted specimens that it comes out very 

 similarly indeed to that of C. palaemon in plate iii., fig. 1. 



Additions to the Coleoptera of Northumberland and Durham, 1907. 



By R. S. BAGNALL, F.E.S. 

 Daring 1907, my opportunities for collecting were more than 

 usually limited, but, by specialised work, several interesting beetles 

 were taken. Thus one evening I tried shingle-collecting and 

 took Knplectiiii mmutlasimus and other rarities, as well as a rare 

 Collembolid (J?i/(/-/'(/a tullbenji, Schott), previously unknown as British 



