ISODACRYS.—TRACHYPHLEUS, 177 
approaching Pandeleteius ; the front coxe are, however, only minutely separated, there 
are no vibrisse, and the wings are almost certainly wanting. 
Group PERITELINA. 
The single genus referred by me to this group has the scrobes superior and the 
tarsal claws connate, the first-mentioned character Separating it from the Sciaphilina. 
THRICOLEPIS. 
Thricolepis, Horn, Proc. Am. Phil. Soc. xv. p. 68 (1876). 
This is a North-American genus of two species. It appears to have occurred just 
within the northern limits of our region and is possibly merely an intrusion from 
N. America. It is, therefore, unnecessary to discuss it further than to remark that its 
distinction from Peritelus appears to me to be doubtful. 
1. Thricolepis inornata. (‘lab. VII. fig. 18.) 
Thricolepis inornata, Horn, Proc, Am. Phil. Soc. xv. p. 69°. 
fab. NortH America, California to Utah 1.—Mexico, Northern Sonora (Morrison). 
We figure this species as the sole representative of a group whose absence in our 
region is most remarkable. 
Group TRACHYPHLG@INA. 
This group is perhaps scarcely separable from the Otiorhynchina as defined by Horn, 
who refers three N.-American genera to it, two with the scrobes superior and one 
with the scrobes lateral. They have comparatively short antenne, with the scape 
becoming gradually thicker to the tip and sometimes reaching the front of the 
prothorax, and the outer joints of the funiculus moniliform, the tarsal claws free, &c. 
A single species of the typical genus Zrachyphleus is represented in the Mexican 
collections before me. 
. TRACHYPHLCUS. 
Trachyphleus, Germar, Ins. Spec. nov. p. 408 (1824). 
1. Trachyphleus solitarius, sp.n. (Lab. VII. fig. 19.) 
Fuscus, dense squamosus, breviter hispidulus ; protkorace brevi, lateribus valde rotundatis. 
Long. 33 millim. 
Hab. Mexico, Ventanas in Durango, Tehuacan in Puebla (Hége). 
Funiculus of antenne with the first and second joints somewhat slender. Rostrum 
rather slender, densely squamose, and furnished with three rows of sete. Thorax 
broad, greatly rounded at the sides, and covered with dense squamosity, bearing also a 
few short, erect sete. Elytra rather elongate, obscurely striate, densely squamose, and 
BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 3, May 1911. 29 AA 
