34 MR. A. G. BUTLER ON CERTAIN SPECIES OF LYC^NID^. [Jail. 10, 



Fig. -4. A group of the same form of spicula as No. 3, in situ arouncl a skeleton- 

 fasciculus, from the specimen of Hi/uhnema in the Bristol Museum. 

 Magnified 108 times linear. 



Fig. .^). An inflato-fusiformi-acerate external defensive spiculum hemispinous 

 distally. Magnified 108 times linear. 



Fig. 6. A spiculated cruciform internal defensive spiculum. Magnified 175 times 

 linear. 



Fig. 7. Inflato-acerate tension spiculum. Magnified 108 times linear. 



Fig. 8. Large atttenuato-rectangulated hexradiate interstitial spiculum. Mag- 

 nified 90 times linear. 



Fig. 9. Small attenuato-rectangulated hexradiate interstitial spiculum. Mag- 

 nified 90 times linear. 



Figs. 10, 11, 12, 13, 14. Various states of development of the cylindro-cruciform 

 interstitial spicula, common to the basal mass of sponge and the co- 

 riaceous investment of the spiral column of the cloacal system. Mag- 

 nified 175 times linear. 



Fig. 15. Attenuato-rectangulated triradiate tension spiculum, occasionally found 

 dispersed among the other tension spicula. Magnified 90 times linear. 



Fig. 16. Asperated or jointed condition of portion of the long acerate spicula of 

 the spiral axis of the cloacal system. Magnified 108 times linear. 



Fig. 17. A detiched joint from a specimen similar to that represented by fig. 16, 

 from which a portion has been fractured longitudinally, exhibiting tlie 

 uniform soHdity of the incrusting silex. Magnified 108 times linear. 



Fig. 18. Quadriharaate retentive spiculum. 



5. Note on the Identity of certain Species of Lyccenidte. 

 By Arthur G. Butler, F.Z.S. 



An observation in the second part of Mr. Hewitson's valuable work 

 on ' Diurnal Lepidoptera,' p. 53, has induced me to compare the 

 description of Hesperia freja, in Fabricius's ' Entomologia Syste- 

 matica,' iii. p. 263. n. 19, vFith the numerous specimens of Lyccenidcs 

 in the collection of the British Museum ; and I am now fully satisfied 

 that this species, which Mr. Hewitson has placed provisionally at the 

 end of the genus HypolyccBna, is perfectly identical with the well- 

 known Myrina jaffra of Godart, figured in Horsfield's ' Catalogue,' 

 pi. 3. figs. 5, 5 a. 



The only apparent defects in the description given by Fabricius 

 consist in the misapplication of the term apex to the anal area of the 

 hind wings (a substitution of frequent occurrence in early descrip- 

 tions), and in the somewhat loose account of the position of the 

 transverse lines on the front wings, — the internal discal line, which in 

 some specimens is almost submarginal, being described as central. 

 The corrected description would be as follows : — 



" Magna in hac familia. Antemice atrce. Palpi albi, apice nigri. 

 Corpus fuscum. Alee anticce supra fuscce, immaculatcc, subtus 

 albcE livibo, lineola transversa discali strigaque poslicafulvis. 

 PosticcB fusccB, area anali albce fascia lata nigra. Cauda duce, 

 anterior longissima alba, posterior brevior nigra margine alba. 



" Subtus albce striga postica valde undata atra. Margo strigis 

 fulvis nigrisqne. Apejc al(B prominet fascia lata, Uete ccerulea, 

 qucB utrinqiie terminatur pnncto magna atro." 



