670 APPENDIX. 



MICRORHAGUS (p. 246). 

 15. Microrhagus horni. 



Microrhagus horni, Fleut. Ann. Soc. Ent. Belg. 1895, p. 166 1 . 

 Eab. Mexico 1 . 

 Found in Paris in imported Mexican tobacco. 



CRYPTOSTOMA (to follow the genus Arrhipis, p. 255). 



Cryptostorna, Latreille, Fam. Nat. p. 348 (1825) ; de Bonvouloir, Mon. Eucnem. p. 753 ; Horn, 



Trans. Am. Ent. Soc. 1891, p. 40*. 

 Ceratogonys, Perty, Del. Anim. Art. Bras. p. 24 (1830-1834). 

 Basodonta, Westwood, in Guerin's Spec, et Icon, des Anim. Artie, livr. ii. no. 8 (1843). 



1. Cryptostorna nigricorne. 



Basodonta nigricornis, Westw. loc. cit. tab. figg. 1-7 \ 



Cryptostorna nigricorne, de Bonv. Mon. Eucnem. p. 758, t. 36. fig. 7 2 . 



Hab. Nicaragua, Chontales (Belt). — Colombia 12 . 



The single specimen received is fulvous red in colour, with the antennse, the tibise, 

 the three basal joints of the tarsi, and the greater part of the abdomen black. It 

 differs from Westwood's description and figures in having the basal joint of the 

 antennae unarmed, and it is therefore probably a female. The insect appears to vary a 

 good deal in colour. 



THYLACOSTERNUS (p. 257). 

 5. Thylacosternus vittatus. 



Very elongate, narrow, cylindrical, moderately shining ; head and antennas black (the outer joints of the latter 

 broken off) ; the prothorax testaceous, with a broad sinuous vitta on either side of the disc, extending 

 from the base to near the apex and widening on the inner side posteriorly, and the anterior margin 



opposite the vittse, black ; the scutellum and elytra black, each elytron with two testaceous vittaB one 



close to the suture and the other marginal, both nearly reaching the apex ; the metasternum and abdomen 

 in great part black ; the femora flavous, with the apex piceous, the tibise black, the tarsi testaceous, with 

 the lamellae flavous ; thickly pubescent, the pubescence on the upperside partaking of the ground-colour 

 pale beneath ; the upper surface densely, finely punctate, the punctuation on the head coarser and more 

 rugose, the shoulders of the elytra granulate. Prothorax transversely subquadrate, narrowed in front 

 only, finely canaliculate down the middle behind and also with a transverse depression on the middle of the 

 disc. Elytra feebly striate at the base. 



Length 13, breadth 2 T X 7 millim. 



Hab. Nicakagua, Chontales (Janson). 



This species somewhat resembles T. quadrivittatus (Redt.) from Eio Janeiro, but it is 

 much narrower, with the thorax and legs very differently coloured. It also approaches 

 T. rubricollis, but has a more parallel thorax, as well as being differently coloured. 



* Dr. Horn's description of the antennae applies to the South- American G. spinicome (Eabr.) only. 



