24 CONTRIBUTIONS TO CANADIAN PALEONTOLOGY. 



Length of body, 19.75°"°; of head, 1.5°"°; of thorax S""; breadth 

 of anterior extremity of thorax, l.VS"""; of posterior extremity, S.S""; 

 of sixth abdominal segment, S""; length of fore femora, 5°"°; of fore 

 tibiiB, S""; of middle femora, 12.5"°°'; of middle tibiae, 14°'"'; of 

 hind femora, 14°°'; of hind tibiae, 11. S""; of first joint of hind tarsi, 

 ■2.3'""; of abdominal lappets, l.S"™; breadth of hind femora, 0.35°™; 

 of hind tibiae, 0.2°°°; of hind tarsi, 0.15°°°. 



I name the interesting species after my lamented friend, Dr. C. 

 Stal, of Stockholm, whose marvelous industry and keen insight into 

 the structure of Hemiptera is known to all entomologists. 



Three miles up the North Fork of the Similkameen River. — Three 

 specimens, Nos. 70, 71 and 72, 73. Dr. G. M. Dawson, 1877. 



Family PENTATOMIDiE. 



The only other one of the Heteroptera and the last species to record 

 is one of the sub-family Pentatominae, which I formerly referred to 

 Euschistus, but which a careful study in connection with other Ameri- 

 can tertiary Pentatominae shows to belong to an extinct type, which 

 has two other members, both at Florissant, Colorado. 



Tbleoschistus Scudder. 



TeleoscMstus Scudd., Tert. Ins. N.A., 454 (1890). 



Head of moderate size, nearly half as broad as the thorax, and dis- 

 tinctly broader than long, scarcely longer than the intraocular width, 

 the portion in front of the eyes subquadrate, with broadly rounded 

 front, rounded angles, the tylum and juga of equal length. Rostrum 

 reaching, as seen through the specimen, opposite a point a little be- 

 yond the base of the scutellum. The thorax is pentagonal, the base 

 at least half as long again as the straight, oblique, posterior lateral 

 margins, the nearly straight but slightly convex anterior lateral 

 margins at right angles to the posterior and a little longer than they, 

 the apical border emarginate for its whole length for the reception of 

 the head, less than half as long as the breadth of the widest part 

 of the thorax and scarely shorter than the middle length of the thorax. 

 Scutellum triangular, vaulted, of nearly equal length and breadth, the 

 tip angulate and not produced, reaching less than half-way to the tip 

 of the abdomen. Mesosternum much longer than the metasternum, 

 the coxal cavities of the two hinder pairs of legs contiguous, separated 

 only by a common paries. 



