40 Mr, A. G. Butler on Lepidoptera 



T. gracilis is indeed less differentiated in most points than 

 T. callipygus ; the essential features of the genus are present, 

 but in the structure of the arms and general shape of the cup 

 the form before us is closely connected with the ordinary 

 Dendrocrinite type. 



EXPLANATION OF PLATE I. 



A. Thenarocrinus callijnjgus, Bather. 



Fig. 1. 57478 h, B. M. Previously figured Ann. & Mag. Nat. Hist. ser. 6, 

 vol. vi. pi. X. fig. 5, This shows the tegminal plates, which were 

 not rendered by the lithographer, and the broad ventral sac. 

 (Nat. size.) 



Fig. 2. 67478 n, B. M. Previously figured loc. cit. fig. 3. Shows fine 

 branching of arms, a few tegminal plates, and, on the left, the 

 base of the ventral sac ; in the stem is seen the trace of a radial 

 suture. (Nat. size.) 



Fig. 3. Mr. C. B. Ketley's specimen. Shows anal area and base of ven- 

 tral sac. Distally the arms are somewhat broken, disordered, 

 and rubbed. The lower part of the cup is damaged by fracture. 

 (Nat. size.) 



B. Thenarocrinus gracilis, sp. nov. 

 Fig. 4. Specimen in York Museum. (Nat. size.) 



Fig. 5. The lower part of the same outlined to show arrangement of plates 

 and stem-ossicles. (X 4.) 



IV. — List of Lepidoptera in a Collection made hy Emin 

 Pasha in Central Africa. By Aethur G. Butler, F.L.S., 

 F.Z.S., &c. 



The present collection consists of eighty species, chiefly of 

 Rhopalocera ; only two of the species appear to be actually 

 new to science, although several others have only been 

 described comparatively recently. 



By far the greater number of the recognized species are 

 identical with forms found in South Africa, and in all cases 

 where closely allied representative forms occur in the south 

 and west, the southern form is the one represented in the 

 present collection ; the eastern element is very slightly 

 indicated. 



R H P A L C E R A. 



Nymphalidae. 



] . Tirumala petiverana. 



Dnnais limniace, var. jietivcranu, Doubledav, fJen. Pi urn. Lcp. pi. xii. 

 iig. 1 (1?<-J7). 



