646 J\lr. E. S.aunJers' Synopsis of 



FF. Thorax with 5—6 pale lines. 



a. Thorax with 6 pale lines .. ' .. foxsarum. 



1). Thorax with 5 pale lines . . . . Scotti. 



CC. Thorax with a distinct, raised, dorsal line. 

 D. TibiiB much longer than the tarsi. 



a. Thorax with 10 — 12 lines .. .. carlnata. 



b. Thorax with 8 — 9 lines .. .. variegnta. 

 DD. Tibiaj and tarsi subequal in length . . . . cavifruns. 



Pronotum and elytra not rastrate. Macrocorix, Thonis. 



1. Geoffrey i, Lcacli. Fig. Dougl. & Scott, Brit. Hem. 



pi. XX. fig. 5. 



Shining olive-brown. Head ochreous ; thorax with 16 

 or more paler, transverse lines ; corium and clavus with 

 a few long scattered hairs, very finely and closely mottled 

 Avith paler markings; beneath and legs testaceous. Dis- 

 tinguishable fi'om the others of this section by its larger 

 size, and the greater number of pale lines on the thorax. 



Length 6 lines. 



Common in ponds, &c. 



2. affinis, Leach. Fig. Fieb. Spec. Coris. pi. i. fig. 5 



(pala3). 



Like the above, but smaller, and the pale markings 

 rather more conspicuous; the pala3 much shorter; the 

 pale lines on the thorax fewer, &c. Claws of intermediate 

 leffs lonj^er than the tarsi. 



Length 4^ lines. 



Lee, Gravesend, &c. Not common. 



3. Panzeri, Fieb. Fig. Fieb. Spec. Coris. pi. i. fig. 3 



(palie). 



Very closely allied to the preceding, but at once dis- 

 tinguished by the much shorter intermediate claws, whicli 

 are shorter than the tarsi, and also in having the tarsi 

 decidedly longer in proportion to the tibiie. 



Length A^ lines. 



Not veiy common. Esher, Gravesend, &c. 



Pronotum and elytra more or less rastrate. 

 Posterior metatarsi conspicuously marked 



with black at the apex . . . . . . Callicorixa, B. White. 



4. Boldii, Dougl. & Scott. 



Upper surface finely rastrate, pronotimi with 7 — 8 fine 

 black lines. J'jlyti'a with transverse pale markings on 

 the corium; the clavus with lonijitudinal ziozao- marking-s 



