32 THE [MMATUEE STATE OF THE ODONATA. 



Around the dorsal books a round pale spot ; on each side an ill-defined 

 darker spot and two black dots on each side j scars oval, dark ; femora and 

 tibiae with two blackish rings. 



19. CORDULIA -SINE A L. (Raised.) 



Plate V. Fig 5. 



Limn''. Selys, Revue, p. 75. 

 Nympha. Eoesel, Vol. II. Pt. II. pp. 26, 27, pi. 5, f. 1. De Geer, Vol. II. Pt. II. pp. 

 36-40, pi. 19, f. 1-7. Hagen, Stett. E. Zeit., Vol. XIV. p. 263, no. 7. 



Three nympha skins, one with the imago half out, the other with the 

 imago just out, from Kiinigsberg, East Prussia, and four skins from Apken, 

 near Kbnigsberg, June 6, 1858, from II. Hagen ; one from Zurich, Swit- 

 zerland, from Mr. Bremi ; one from Vienna, Austria, from Dr. F. Brauer. 

 Length, 23 to 24 mm. ; breadth, 7 to 8 mm. 



Very similar to C. metallica, but differs as follows: head with a finer, 

 less elevated line, without tubercles behind ; occiput roughened with small 

 spines as C. metallica, leaving some oval places without spines; vertex with 

 indication of ocelli; two black transversal marks on each side, one near 

 the anterior ocellus, the other above base of antenna; prothorax laterally 

 sharper ; thorax with a black dorsal band and two transversal ones on each 

 side ; dorsal hooks of abdomen on segments 3 to 9 thicker, short, more 

 developed on Oth to 8th, on 9th only indicated ; abdomen a little more 

 truncate at tip; appendages shorter, dorsal median a little shorter than 

 inferiors, in males the middle quadrangularly dilated ; first joint of tarsi 

 of hind legs less than half as long as second. 



The descriptions and figures by Roesel and De Geer are not satisfac- 

 tory, but belong with the imago to C. Eenea. 



20. CORDULIA FLAVOMACULATA V. L. (Raised.) 



Plate VI. Fig. 3. 



Vander Linden. Selys, Revue, p. 73. 



One male nympha skin from Apken, near Kiinigsberg, East Prussia, 

 raised, dune 6, 1858, by IT. Hagen. Length, 21 mm.; breadth, 6^ mm. 



Body smaller, naked, brown, hind legs blackish. Similar to C. metal- 

 lica, but smaller, differing as follows: line on head a little stronger; no 



