HETEROMERA. 483 
punctate ; beneath obscure ferruginous, opaque; tarsi clothed with spiny hairs beneath, the first joint of 
the hind pair as long as the third and fourth united: body winged. 
Length 44-5 millim. 
Hab. Mexico, Iguala in Guerrero, Cuernavaca in Morelos (Hoge). 
Three examples. This species has quite a different facies from any of the other 
Central-American members of the genus. The head is feebly trilobed in front, both 
mandibles are toothed on the upperside, the thorax is considerably narrowed behind 
and deeply grooved within the basal margin, and the elytral interstices are finely 
alutaceous. ‘The external (or ninth) row of punctures on the elytra is deeply impressed 
towards the base, and within the reflexed margin there is a row of coarse impressions. 
Emmenastus mancus (p. 15). 
To the Mexican localities given, add :—Chilpancingo and Acapulco (Hége). 
Emmenastus curtus (p. 16). 
To the Mexican locality given, add:—Ventanas in Durango (Hége). 
Emmenastus lentus (p. 16). 
To the Mexican locality given, add:—Chihuahua city (Flohr, Hége), Villa Lerdo in 
Durango (Hége). 
Found in plenty at Villa Lerdo. These additional specimens differ from the slightly 
immature type in the more distinct punctuation of the elytral interstices. EH. lentus is 
very closely allied to E. convexus, Lec. (for a specimen of which I am indebted to 
Capt. Casey), but differs from it in having the punctures of the elytral series much 
more distinct, the thorax more rounded at the sides, and the ventral surface more 
closely punctate. In some of the Durango specimens the thorax is more densely and 
more confluently punctured. 
Emmenastus pulvinatus (p. 17). 
To the Mexican locality given, add :—Mexico city (lohr, Hoge), Pachuca in Hidalgo, 
Tehuantepec (Hége). 
27. Emmenastus stolidus. 
Elliptic, rather broad, short, feebly convex, opaque, black or pitchy-brown. Head finely, rather thickly 
punctate; antenne moderately elongate, the basal joints slender; prothorax strongly transverse, the sides 
rapidly converging almost from the base, the anterior and posterior angles obtuse, the base almost straight 
and shallowly grooved within the, margin on either side of the middle, the surface finely and rather 
closely punctured, the punctures finer and sparser on the middle of the disc; elytra the width of the 
prothorax at the base, rather short, narrowing from about the middle, with rows of very fine, shallow, 
closely placed punctures, the interstices flat, exceedingly minutely, sparsely punctate; beneath pitchy- 
