974 ME. F. A. BATHEB OS UIIfTACEINrS, [DeC. 17, 



Cirrochrista diaphana, Hmpsn. 111. Het. viii. p. 135, pi. 155. 



f. 11, belongs to the Pyraustince. 

 Pelena unicolor, Moore, Lep. Ceyl. iii. p. 386, pi. 184. f. 16, 



belongs to the Hiidrocampince. 

 Taseopteryx sericea, Butl. Traus. Ent. Soc. 1883, p. 63, belongs to 



the DeltoidincE. 

 Metothemma angidipennis, Butl. Trans. Ent. Soc. 18S3, p. 62, 

 belongs to the Beltoidirue. 

 „ acuminata, Butl. Traus. Ent. Soc. 1883, p. 62, belongs 



to the Deltoidmce. 

 „ striata, Butl. Trans. Ent. Soc. 1883, p. 63, belongs to 



the Deltoidince. 

 Eromene vetustella, Wlk. xxxv. 1763, is a Nola. 

 Cramhus perspicum, Wlk. Ent. v. 155. Type lost, description not 

 recognizable. 



Addendum (Eeb. 18, 1896). 



Sedekia, Guen. Delt. & Pyr. p. 249 (1854), before Eromene, from 



which it is distinguished by the abortion of the proboscis. 



Type. Sedenia cebtalts, Guen. p. 250, pi. 3. f. 'i=\itonusalis, Wlk. 



xviii. 794, and -fpictoalis, six. 1016. Australia. 



Sedenia eupalis, Guen. p. 250. Australia. 



6. On Uintacrimis : a Morphological Study. 

 By F. A. Bather, M.A.' 



[EeceiTed December 3, 1895.] 

 (Plates LIV., LV., & LVI.) 



Contents. 



1. Introduction and History of 



Discovery, p. 974. 



2. Morphological Description of 



Vinfacrimis socialis, p. 978. 



3. Tbe Relations of Uintacriuus, 



p. 995. 



4. Sunimaiy, p. 1002. 



5. The Literature of Uintacrimts, 



p. 1003. 



6. Explanation of the Plates, 



p. 1004. 



1. Inteodtjction and Histoey of Discoteet. 



Among those extinct forms that have evoked the curiosity of 

 naturalists, the pecuhar unstalked crinoid Uintacrimis holds a 

 foremost place. Not merely its rarity and its beauty have caused 

 it to receive unusual attention, but also the circumstances that, 

 though found in the Cretaceous rocks, it reminds one strongly of 

 forms extinct since the Carboniferous period, and yet cannot be 

 joined to them, so far as we are aware, by any chain of ance.stors. 

 Like the other unstalked and free-swimming crinoid of the Chalk, 

 Marsupites testudinarius, it is a forlorn foundling, Avith not even a 

 birth-mark to reveal its parentage. The riddle with which 

 Uintacnnus perpetually challenges tlie naturalist may perhaps be 



* Communicated by Sir W. H. Floweb, K.O.B., P.Z.S. 



