262 PHYTOPHAGA. 



of punctuation whatever ; and in a specimen named by Stal from the collection of 

 Mr. Baly, there are only a few very minute punctures visible at the sides, the rest of 

 the disk being impunctate, thus differing from Stal's description, who gives the thorax 

 as " vix perspicue, latera versus distinctius punctulatus." 



5. Elytrosphaera annulata. (Tab. XV. fig. 24.) 



Fulvo-pieeous ; antenna and legs fulvous ; thorax subremotely punctured ; elytra closely and irregularly 

 punctured, a ring-shaped mark near the suture at the base, a transverse line at the middle, a longitudinal 

 row of spots below the latter, and the lateral margin golden yellow. 



Length 3 lines. 



Head with a few fine punctures, lower part of face and the labrum fulvous ; antennas with the terminal joints 

 gradually thickened, and nearly as broad as long, the last joint elongate ; thorax of the same shape as 

 that ofK mexicana, but less closely punctured at the disk, the sides strongly rugose-punctate; elytra rather 

 strongly and closely but irregularly punctured, the interstices rugose near the sides, the suture accom- 

 panied by a row of closely arranged punctures ; at the base near the suture a large ring-shaped mark of 

 golden yellow extends to nearly the middle of the elytra ; below the middle near the sutural margin a 

 longitudinal row of small spots extends to the apex in a somewhat curved shape, and having another 

 oblique spot attached to its commencement, while a transverse short narrow line of yellow is placed at the 

 middle and rests upon the similarly coloured lateral margin in the same way as in the preceding species ; 

 this transverse line extends inwards only as far as the ring, which it nearly joins at its outer limb. 



Eab. Mexico, Yolotepec {Salle). 



The elytral pattern of this species, of which I have also only a single specimen before 

 me, is quite distinct from that of_E. mexicana; so that it cannot be considered a variety 

 of that species, although it is closely allied to it in other respects. 



PYXIS. 



Pyxis, Chevrolat in D'Orbign. Diet. univ. Hist. Nat. 1843, iii. p. 656 ; Stal, Diagn. 1860, p. 463 ; 

 Monogr. Chrys. Amer. p. 289. 

 The species constituting this genus bear a great resemblance to those of the genus 

 Plagiodera, from which I am only able to distinguish them by their appendiculate 

 (not bifid as Chapuis says) claws, these organs being simple in the allied genus. As to 

 the concave form of the abdominal segments, upon which Chapuis lays stress, I find the 

 same to occur occasionally in Plagiodera, while in Pyxis it is not always present, 

 P. clavigera showing scarcely any trace of it. The same remark applies to the length 

 of the first abdominal segment, which is of equal size to the rest in Plagiodera, while 

 in some species of Pyxis it is scarcely longer than the following ones. Only a single 

 species has been described as inhabiting Mexico : I find the same locality given to a 

 species (P. clavigera) in the collection of Mr. Baly ; but this is probably an error, as I 

 have not seen any other specimens from that locality. 



1. Pyxis indiga. 



Pyxis indiga, Stal, Diagn. 1860, p. 463; Monogr. Chrys. Amer. p. 290 \ 

 Jlab, Mexico l , Cordova (Salle). 



