658 DESCRIPTION OF PLATES, 22, 23. 



specimen, segment n, bore a single cirrus. The posterior 

 thoracic segment, o, bearing the sixth pair of cirri, o' } is 

 very small and obscure, and can be seen only by separating 

 the fit'th and sixth pairs of cirri ; or by longitudinally 

 bisecting the thorax, and viewing the inner side ; n', fifth 

 cirrus ; «, lower segment, b, upper segment of pedicel ; 

 c, lower, and d, upper segment of the one ramus, the 

 other ramus being represented by the coriaceous boss c' ; 

 o', sixth cirrus, with similar segments ; p, caudal appen- 

 dage. 

 Fig. 14, First cirrus. 



15, Maxillae, with the lower end of the apodeme cut off, showing 

 the curious membranous swelling on the side towards the 

 mandible. 



PLATE 23. 



Alcippe lampas. 



Fig. 16. Pupa of male Alcippe lampas, viewed laterally ; a, antennae, 

 c', eyes attached to the apodemes ; above these the single 

 eye of the mature male may be distinguished. 



17. Abdomen of the same ; p, posterior end of thorax ; q, abdo- 



men ; r, caudal appendages. 



18. Male of Alcippe lampas immediately after the metamor- 



phosis, the ventral surface being uppermost, but the 

 specimen has been in some way distorted, as the lobe (i) 

 ought to project on the opposite side ; a, antennae of the 

 pupa ; (/, h, lateral lobes ; internal organs not yet formed ; 

 orifice at upper end (i) not visible ; scale same as for 

 the pupa, fig. 16. 



19. Male of Alcippe lampas, when fully mature; scale same as 



in last figure (18) and as in fig. 16. 



a, antennae of pupa. 



b, vesicula seminalis. 



c, eye, (seen in fig. 16 above the eyes of the pupa, c'.) 

 c/, testis. 



e, lower transverse muscle. 

 f, upper transverse muscle. 

 ff, h y lateral lobes of the external covering, answering to the 



sides of the peduncle of the female. 

 it terminal lobe on the ventral side of the orifice, probably 



corresponding with a in fig. 1, PI. 22. 

 k, orifice of the tubular sack. 

 I, oblique muscles on the ventral side of the sack. 

 m, probosciformed penis, shown exserted ; m' portion within 



the tubular sack. 



