MUTILLA. 297 



antennse punctured, covered with silvery hair ; the flagellum brownish beneath, covered 

 with golden pubescence. Thorax narrow, elongate, distinctly narrowed from the 

 tubercles to the apex, coarsely punctured throughout ; the tubercles bluntly conical, 

 ferruginous at the apex. The abdomen longer and broader than the thorax, narrowed 

 towards the apex. The first segment, if anything, wider than long, punctured ; the 

 base depressed, incised, produced laterally into sharp teeth ; covered with a long silvery 

 pubescence and with some long silvery hair. The second segment closely and coarsely 

 punctured ; the other segments with separated punctures, except at the base and apex. 

 The pygidium smooth and shining ; the apex ferruginous ; the base densely covered 

 with golden pubescence, the other parts with long fulvous hair. The first ventral 

 segment produced at the base in the middle into a blunt tooth ; the second segment 

 strongly punctured ; the third transversely striated at the base, the apex punctured ; 

 the other segments also punctured ; the second segment with some long black hairs, 

 the other segments fringed with golden pubescence. Legs black, sparsely covered 

 with white hair ; the calcaria white ; the hair on the tarsi pale fulvous, the tarsal 

 spines also pale fulvous. 



Agrees in form with M. championi, but the head is covered entirely with golden 

 pubescence, and it is also not so sharply nor so obliquely narrowed behind ; the thorax 

 has distinct patches of golden pubescence, and the black hair is denser and longer ; 

 the petiole is covered with silvery pubescence and is not coarsely punctured as in 

 M. championi ; the markings on the second segment are larger and golden ; and the 

 punctures on the pleurae are much closer and smaller. 



The next two species agree generally in structure with M. teapce and M. ehampioni, 

 but the head is not so sharply narrowed behind the eyes ; the thorax is shorter, com- 

 pared to the head ; and the coloration of the body is dark ferruginous, not black. 



v 43. Mutilla tolteca. (Tab. XIII. fig. 14, $ .) 



Mutilla tolteca, Blake, Trans. Am. Ent. Soc. hi. p. 246 \ and xiii. p. 197 2 . 



Sab. Mexico (Sumichrast 12 ), Venta de Zopilote in Guerrero 2800 feet (H. II. 

 Smith). 



An example (?) from Guerrero apparently belongs to Blake's species, but it is 

 12 millim. long (as against 8*5 millim.) ; the thorax from the teeth is more abruptly 

 contracted than is shown in Blake's figure ; and the cheeks and " a patch behind each 

 eye " are not black. The second ventral segment is described as " closely punctured " : 

 in our specimen the punctures are large and distinctly separated, while the longitudinal 

 keel only extends to the middle. The form of the spots on the base of the second 

 segment is also a little different in the Guerrero example. The tips of the antennae 

 are fuscous. 



Blake, in his first paper \ refers M. tolteca to his subgenus Sphwrophthalma ; in his 

 biol. centr.-amee., Hymenopt., Vol. II., February 1894. 2 qq 



