NATURAL SCIENCES OF PHILADELPHIA. Ill 



tenure involute, rather slender; scntellum flat, with elongate, 

 sparse punctures, sides carinate ; metathorax gradually sloping 

 behind, the posterior middle excavate ; areolet sriiall, 5-angular ; 

 legs subrobust ; abdomen short, ovate, second and third segments 

 longitudinally aciculate and punctured, basal segment rugose, the 

 basal incisures of second and third segments very deep ; first 

 segment broadlj- and suddenly dilated at apex ; gastrocoeli large 

 and deep; apical segments smooth and shining. Length 6-6^ 

 lines. 



% . Antennffi quite slender ; scutellum convex ; apical third of 

 wings more or less tinged with fuscous ; four anterior legs, except 

 ungues, entirely bright yellow ; base of fourth abdominal segment 

 black. Length 6 lines. 



Orizaba ; Cordova. (Sumichrast, Xo. 4.) This seems to difler 

 from the unique specimen of the Cuban Ichneumon hrevivientris^ 

 Cresson, only by the more dense punctation of the mesothorax, 

 by the sparsely punctured scutellum, and by the first abdominal 

 segment being rugose and not aciculate. 



2. Ichaeumon meridionalis. 



Ichneumon meridionalis, Cresson, Proc. Eat. So. Phil., iv. 13. 



S 9. Black; antennae with a white aunulus ; wings fuscous or 

 black, with a brassy gloss ; legs blackish-piceous, the anterior 

 tibia? and tarsi 3'ellowish in front; abdomen rufo-ferruginous, basal 

 segment black. Form elongate, slender, densely punctured ; an- 

 tennae involute in 9 ; mesothorax granulated ; scutellum slightly 

 convex, rugose ; metathorax rugose, shining, elevated lines sub- 

 obsolete ; areolet large, 6-angular or subquadrate, the lower apical 

 side very short, the other sides subequal ; abdomen elongate, sub- 

 cj'lindrical, densely punctured ; basal segment deeply punctured 

 at tip. Length 5 J lines. 



Orizaba ; Mirador. '(Sumichrast, No, 59.) This species occurs 

 also in Cuba. 



3. Ichneumon mexicamis. 



Ichneumon mexicanus. Cress., Trans. Am. Eut. Soc, ii. p. 2, 'J, J . 



Orizaba; Cordova; Mirador. (Sumichrast, No. 11.) Common. 



4. Ichneumon totonacus. 



Ichneumon totonacus, Cress., Trans. Am. Eut. Soc, ii. p. 10, %. 

 Orizaba. 



