PITYOPHAGUS.—IPSIMORPHA. 387 
guished by a very curious character, the epistome being deflexed and perpendicular in 
front and bearing there two large and deep fovee in the middle. In P. rufipennis, 
Horn, the epistoma is not deflexed, but is separated from the head by a well-marked 
suture, and its front margin has a deep transverse impression on each side. In the 
European P. ferrugineus the epistome is small and appears to me simple, though 
probably dissection might show this not to be really the case. 
2. Pityophagus arcuatus. 
Ips (Pityophagus) arcuatus, Er. in Germar’s Zeitschr. iv. p. 360°. 
Hab. Mexico }. 
This insect is quite unknown to me. 
IPS. 
Ips, Fabricius, Gen. Ins. p. 23 (1776) ; Erichson, in Germar’s Zeitschr. iv. p. 358. 
This genus includes about twenty species distributed in the Palearctic and Nearctic 
regions. Species assigned to it from other regions probably do not belong to it. 
1. Ips ultimus, sp.n. (Tab. XII. fig. 21.) 
Elongatus, parallelus, subdepressus, parce subtiliterque punctatus, sat nitidus, niger; elytris rufis, apice macu- 
laque laterali utrinque nigris. 
Long. 63 millim. 
Hab. Mexico, Jacale (Sailé), Omilteme in Guerrero 8000 feet (H. H. Smith). 
Head very finely punctate; epistome with a transverse fovea on each side in front. 
Thorax subquadrate, the sides a little narrowed behind but not sinuate ; surface very 
finely punctate. Elytra finely and moderately closely punctate, red, with the apical 
third black, and with a black spot just in front of the middle. 
We have received only two examples ; both appear to be of the male sex. 
2. Ips(?) fuscipennis. 
Ips fuscipennis, Cast. Hist. Nat. Ins. Col. ii. p. 14°. 
Hab. Mexico}. 
Nothing is known of this insect; from the size given we may be sure that it is not 
an Ips. If the type cannot be found, I do not think the species can ever be satisfac- 
factorily identified from the description alone. 
IPSIMORPHA. 
Ipsimorpha, Reitter, Verh. Ver. Briinn, xu. 1, p. 165 (1873). 
This is a genus containing two species from Mexico. Reitter places it at the end 
of the family. We have received nothing that I can assign to it. 
3 D*2 
