MONTEZUMIA. 121 



%. Clypcus rather convex at the top, flattened below, termi- 

 nated by two distant teeth, separated by a straight border; its 

 color obscure like that of the head, or having in its inferior part 

 a yellow mark or triangle. 



Var. a Clypeus and antennae entirely black, without yellow. 



b. Thorax entirely ferruginous except the disk of the mesono* 

 turn, which is blackish. 



c. The first segment of abdomen blackish (Spinolee, Sss.). 



d. The first segment ferruginous, margined with yellowish ; the 

 yellow fascia preceded by a fuscous stain. 



Bess. a. diff. — I have joined M. wfernalis to Spinolas, for it 

 is very likely to be the same species. These velvety, partly 

 ferruginous insects are so variable that only the examination of 

 numerous specimens can settle the entomologist as to the value 

 of the species. Compare this species with M. Ghilianii, Mexicana, 

 and ferruginea. 



Hab. Brazil, Para; Surinam. (Type of Spinola in Turin 

 museum; the author's type in his own collection.) 



Observation. — The name 31. infernalis was given by my 

 excellent friend Marquis Max. Spinola before I gave the species 

 the name of Sjrinolse, but the manuscript of Spinola having taken 

 a long time to print, the name Spinolde was published first, so 

 that I was obliged to preserve it. 



14. M. Olislianii n. sp. — Velutina, uigresceiis vel fusca; metanoto, 

 scutellis, pedibus et abdominis prinio segmento, rufis ; hoc flavo-margi- 

 liato; thorace lato ; abdominis primo segmento depresso, subpetiolato. 



Total length, 18 mm. ; wing, 15 mm. 



Size and livery as in M. Spinolae, but the thorax much wider, 

 dilated, and the prothorax not quite so angular. The scut el and 

 post-scutel not parted by a longitudinal groove, but rather by a 

 sort of indication of a carina. The metalhorax shorter than in 

 the said species, less chubby, more angular. The first abdo- 

 minal segment a little more petiolate; its dilatation shorter, 

 depressed, not so convex, bell-shaped. 



Body quite velvety, covered with golden hair. Head black; 

 antennae ferruginous beneath. Thorax black; hind margins of 

 prothorax bordered by a rufous line; tegnhe. scutels, metathorax, 

 legs, and various spots under the wings nit'o-ferrnginous. AUlo- 



