242 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
NEW BINOMIALS. 
Echinocereus chloropthalmus (Hook.) Britt. & Rose. 
Echinocactus chloropthalmus Hook. Curtis’s Bot. Mag. 74: pl. 4373. 1848. 
This Echinocereus, long ago described as an Echinocactus, has never been trans- 
ferred. 
Leptocereus quadricostatus (Bello) Britt. & Rose. 
Cereus quadricostatus Bello, Anal. Soc. Espafi. Hist. Nat. 10: 276. 1881. 
This is a common species in Porto Rico and has all the characteristics of Leptocereus. 
Selenicereus urbanianus (Gurke & Weing.) Britt. & Rose. 
Cereus urbanianus Gurke & Weing. Monatsschr. Kakteenk. 16: 136. 1906. 
This species was inadvertently omitted from our original treatment of Selenicereus. 
Selenicereus vagans (K. Brandeg.) Britt. & Rose. 
Cereus vagans K. Brandeg. Zoe 5: 191. 1904. 
Cereus vagans in habit is exactly like Selenicereus, and while its flowers are not 
quite typical, it seems best to refer it here, its place being, perhaps, next to S. 
spinulosus. 
Cereus longicaudatus Weber, stated by us to be probably identical with 8. vagans, 
has recently been studied by Mr. W. Weingart and he reaches the same conclusion. 
Cereus longicaudatus was published the same year as C. vagans, but several months 
later. 
Wilcoxia viperina (Weber) Britt. & Rose. 
Cereus viperinus Weber; Gosselin, Bull. Mus. Nat. Hist. (Paris) 10: 385. 1904. 
This species was re-collected at its type locality by C. A. Purpusin April, 1908 
(no. 3301), and an examination of this material shows that it is a good Wilcoxia. 
