128 BULLETIN 138, UNITED STATES NATIONAL MUSEUM 



peduncle; scaphocerite sharp; third pair of maxillipeds well devel- 

 oped; first three pairs of pereiopods provided with a chela, last 

 two pairs with a terminal dactyl ; uropods wide and bladelike. (Van 

 Straelen.) 

 Jurassic; Cretaceous. 



EEYMA DAWSONI Woodward 



Plate 35, fig. 1 



Eryma dmcsoni Woodward, Geol. Mag., n. s., dec. 4, vol. 7, 1900, p. 400, 

 pi. 16, fig. 2. — Whiteaves, Mesozoic fossils, vol. 1, pt. 5 ; Geol. Surv. 

 Canada, Ottawa, 1903, p. 321, pi. 41, fig. 2. 



Type-locality. — British Columbia : Hornby Island. Cretaceous. 



Genus ENOPLOCLYTIA M'Coy 



Enoploclytia M'Coy, Ann. Mag. Nat. Hist., ser. 2, vol. 4, 1849, p. 330 ; type, 

 E. Icachii (Mautell). 



Carapace strongly rostrate; branchial regions dilated; cervical 

 suture very deep and wide; gastro-orbital furrow constant; po.st- 

 cervical sutures more important than the cervical suture but dimin- 

 ishing greatly downward; branchio-cardiac sutures extremely re- 

 duced; first three pairs of pereiopods terminate in massive chelae, 

 especially the first, the two last pairs with terminal dactyls; carapace 

 and pereiopods covered with large tubercles. 



Jurassic ; Cretaceous. 



ENOPLOCLYTIA MINOR Woodward 



Enoploclytia minor Woodward, Geol. Mag., n. s., dec. 4, vol. 7, 1900, p. 434. — 

 Whiteaves, Mesozoic fossils, vol. 1, pt. 5 ; Geol. Sur. Canada, Ottawa, 

 1903, p. 321. 



Type-locality. — British Columbia : Hornby Island. Cretaceous. 

 Family ASTACIDAE Hagen 



Carapace subcylindrical, free from epistome, and divided by a 

 transverse cervical groove. Rostrum of moderate size. 



First three pairs of legs chelate, first pair much larger than the 

 others; last two pairs not chelate. Posterior thoracic somite united 

 to the preceding by a movable joint. Exopodite of uropods divided 

 by a suture. 



Genus MEYERIA M'Coy 



Meyeria M'Coy, Ann. Mag. Nat. Hist., ser. 2. vol. 4, 1849, p. 333; type, 

 M. ornata (Phillips). 



Carapace strongly compressed, high; cervical suture very deep, 

 V-shaped, lateral portions nearly straight, meeting above in an 

 acute angle considerably in front of middle and extending to lateral 



