STRONG YLIUM. 371 
54. Strongylium languidum. i 
Strongylium languidum, Makl. Monogr. p. 204; Act. Soc. Fenn. viii. part 1, p. 812°. 
Hab. Mexico, Cordova, Tehuantepec (Sallé +); GuaTeMaua, Zapote, Capetillo, Senahu, 
Sinanja (Champion). 
According to two examples labelled S. danguidum in the Sallé collection (a third so 
labelled is here referred to S. impressicolle), this species differs from S. armatum in the 
rather less approximate eyes. The armature of the sides of the thorax, when a large 
number of examples from the same locality are examined, proves to be a variable 
character, and some specimens here referred to S. languidum have the sides as strongly 
toothed as in 8. armatum, while in others the median tooth is obsolete; the anterior 
angles of the thorax are less prominent in S. Janguidum. The ventral surface is more 
finely punctured than in S. armatum. 
The Guatemalan examples have the eyes comparatively widely separated (especially 
noticeable in the female), and differ a little in other respects ; I do not think, however, 
that they represent more than a variety of S. languidwm. 
The North-American S. crenatum, Makl., is an ally of this species. 
55. Strongylium armatum. (Tab. XVI. fig. 10, 9, var.) 
Strongylium armatum, M&kl. Monogr. p. 208 ; Act. Soc. Fenn. vii. part 1, p. 311 ‘ 
Hab. Mexico, Cordova (Sallé1), Cerro de Plumas, Tapachula in Chiapas (Hdge) ; 
GuaTema.a, San Juan in Vera Paz (Champion) ; Panama, Volcan de Chiriqui (Champion). 
This species is separated from S. émpressicolle, if I have identified that insect correctly, 
by the smaller size, more linear shape, more coarsely punctured elytra, rather smaller 
eyes (in the male separated only by an exceedingly narrow space), and much more 
coarsely punctured ventral surface ; as well as by the toothed sides of the thorax, a 
character, however, sometimes present in S. impressicolle ; both species usually have 
the anterior angles of the thorax a little prominent. Two examples, one from Cordova 
(figured on our Plate) and one from San Juan, have the suture and the lateral margins 
of the elytra reddish, thus very nearly approaching S. démitatum in colour ; S. armatum 
is, however, distinguished from that species by the red suture and more coarsely 
punctured elytra. 
56. Strongylium oculatum. 
Resembling S. languidum, and differing as follows :—The antenne longer in both sexes, particularly in the 
female; the eyes larger and closely approximate in the male, narrowly separated in the female ; the pro- 
thorax more rounded at the sides, the anterior angles rounded or indistinct, the hind angles subacute, the 
sides armed with a very short feeble tooth in the middle; the upper surface usually golden-bronze in 
tint ; the rest very much as in S. languidum. 
Length 73-83 millim.; breadth 27-23 millim. (¢ 2.) 
Hab. Guatemata, Yzabal (Sal/é) ; Nicaracua, Chontales (Belt, Janson). 
3 BB 2 
