1863.] MR. F. WALKER ON INSECTS FROM MADAGASCAR. 167 



the other hand to Hindostan, China, Java, and the Philippine Isles. 

 Of the other two supposed species of this genus, A. styx (called 

 also A. medusa) seems to be an Asiatic form of A. atropos ; and the 

 latter can hardly be considered as originally distinct from the third 

 species, which inhabits Hindostan, Ceylon, China, and Java, and has 

 received the names of mortis, satanas, lethe, and circe. The intro- 

 duction of A. atropos into England may be a consequence of the 

 warmer period which ensued after the glacial epoch, and during which 

 the southern forms of life migrated northward. This period is in- 

 dicated slightly in the present time, when a hot summer in England 

 is accompanied by the appearance of some South European insects. 



EUCHROMIA FOLLETII, Gu^r. 

 BiZONE AMATURA, U. S. 



The genus Bizone has been hitherto only discovered in Asia and 

 in some of the Eastern Islands. 



Artaxa fervida, n. s. 



EUPROCTIS producta, n. s. 



Trigonodes hippasia. 



Inhabits also Ceylon and Hindostan. 



Arachnida. 

 Gasteracanthus. One species. 



The new species indicated above may be described as follows : — 

 Lyg^us consentaneus. 



Coccineus; proboscide, antennis, pedibus, prothoracis punctis duo- 

 bus, mesothorace, metathorace, abdominis maculis luteralibus 

 maculaque apicali, necnon alarum anticarum lineola costuli, 

 puncto discali membranaque nigris ; alts posticis nigricanti- 

 cinereis, venis nigris, ad basin rufis. 



Bright red ; proboscis, antennae, and legs black ; prothorax with 

 two black points in a transverse line on the disk ; mesothorax and 

 metathorax black : abdomen with black dots along each side ; apical 

 spot black, largest on the underside : fore wings with a short black 

 costal line and a black discal point, membranous part black : hind 

 wings blackish cinereous ; veins black, red towards the base. 

 Length of the body 6 lines, of the wings 1 2 lines. 



BiZONE AMATURA. 



Foem. Alba, palpis antennisque roseis, pedibus rosea variis; alls 

 anticis linea exteriore subinterrupta, strigis quatuor costalibus 

 maculisque septem marginalibus roseis, alis posticis guttis mar- 

 ginalibus roseis minus determinatis. 



Female. White ; palpi and antennae rosy ; fore legs rosy ; middle 

 tibiae with two rosy bands ; posterior tarsi rosy ; fore wings with an 



