466 Mr. Westwood on some new Species of Athyreus, 



of the genus by the raised tubercle on the front part of the pronotum being 

 placed towards the middle, instead of close to the anterior margin. The 

 upper side is pitchy chestnut, with the front of the head broad, the margin of 

 the prothorax and narrow edges of the elytra fulvous red ; the underside of 

 the body and legs are also fulvous red, with fulvous hairs. The head is 

 covered with very fine tubercles, having the front margin nearly semicircular, 

 the centre produced into an angle advanced over the clypeus, and the two 

 anterior angles in front of the antennae are scarcely prominent. Between the 

 eyes is a rounded polished excavation. The prothorax is also covered with 

 very minute tubercles ; and at a little distance in front of the centre is a 

 raised oval tubercle, from which extends a slightly-impressed longitudinal 

 line reaching to the scutellum ; from this line the sides are slightly raised, 

 the raised part on each side being bounded by an oblique, slender, raised and 

 polished line, from which, near the base, extends inwardly a small transverse 

 and not very distinct spur. Between this line and the hinder angle is another 

 much shorter and more oblique raised shining line, and towards the lateral 

 margin, opposite to the notch above the base of the fore-legs, is a small cir- 

 cular excavated spot. The elytra are finely rugose and setose, substriated, the 

 striae being deeper towards the base of the elytra, and almost vanishing before 

 reaching the apex. The fore tibiae have five obtuse teeth. 



EXPLANATION OF TAB. XXII. 



Fig. 1. Athyreus gig as, Hope, MS. 1 a. Head and thorax of ditto, detached. 



2. armatus, Hope, MS. 2 a. Head and thorax, detached. 



3. subarmatus $ , Westwood. 3 a. Head and thorax, detached. 



4. tuberculatus, Hope, MS. 4 a. Head and thorax, detached. 



5. rotundus, Hope, MS. 5 a. Head and thorax, detached. 



. bellator, Westwood. 6 a. Head and thorax, detached. 



7. Bilbergii, Gray. (Head and thorax, seen from above.) 



8. Pholas, Buquet, MS. 8 a. Head and thorax, detached. 



9. excavatus, Laporte. (Head and thorax, seen from above.) 



10. bicolor, Laporte. (Head and thorax, seen from above.) 



11. sexdentatus, Laporte. (Head and thorax, seen from above.) 



