Zoological Society. 225 



Above, anterior wings rich crimson, the costal nervure and the 

 inner margin fuscous black, the apex broadly and triangularly black, 

 the black colour commencing on the costa opposite tiie end of the 

 cell, becoming narrower towards the outer angle, where it unites with 

 the fuscous black of the inner margin. Posterior wings black, marked 

 with a large blue discoidal patch, extending nearly to the anal angle. 

 Below, anterior wings with the part corresponding to the crimson of 

 the upper surface much paler than above, the cell with two round 

 black spots ; the black of the apex and inner margin replaced by pale 

 fuscous ; the disco-cellular nervules marked with a fuscous black 

 dash, and the apex crossed by two oblique bands of the same colour. 

 Posterior wings pale fuscescent, with two rounded fuscous spots in 

 the cell ; several scattered liturae of the same colour before the middle 

 of the wing, then two transverse bands also fuscous, followed by a 

 series of seven black spots pupilled with white, the last bipupillate, 

 the second spot the largest : between these spots and the margin a 

 third fuscous band. 



Head, thorax and abdomen black. 



This beautiful butterHy is I believe unique in my own collection. 

 It was taken by my friend Mr. Empson many years ago in South 

 America, and was one of a very few things — all at that time very rare 

 — which were saved from the shipwreck of a large collection. 



Mr. E. Doubleday, whose experience gives him great facility, has 

 kindly supplied me with the generic characters. 



2. Description of Echixocerus cibarius, a new species and 

 SUBGENUS OF Crustacea. By Adam White, F.L.S. etc. 



Amongst the Decapod Crustacea there are several genera of doubt- 

 ful situation which belong to neither of the great divisions Brachyui'a 

 and Macroura. Professor Milne-Edwards first brought them together 

 as a section, under the name of Anomourn ; but, as he remarks, they 

 do not form a very natural group, the principal advantage derived 

 from its formation being the opportunity which it gives the syste- 

 matist to withdraw all the aberrant species from the two very natural 

 sect:ons specified above. Not a year passes but new species are added 

 to this group, and occasionally a new form is found ; in course of 

 time these discoveries will serve to link genera which seem at pre- 

 sent to be distant from each other, if at all related. The species 

 described below is close to the genus Lithodes, some of the species 

 of which have considerable resemblance to it. The generic name 

 describes the peculiarity of the spined appendage to the outer an- 

 tennae, while the specific name is given in allusion to its excellence 

 as an article of food. 



In one of the two specimens in the British Museum, the legs, cara- 

 pace and abdomen are covered with numerous barnacles, and on 

 taking oflF the old carapace, which had commenced to split, the still 

 coriaceous envelope, which would have formed the new carapace, 

 may be found beneath it. On this are very plainly indicated the 

 crowded warts, the scattered knobs, and lateral projecting spines, 

 which are so prominent on the outer sur!"ace of the old carapace. 



Jnn. ^ Mag. N. Hist. Ser. 2. Vol. iii. 1 5 



