LANTERNFLIES OF LESSER ANTILLES FENNAH 37 



castaneous. Tegmina hyaline, tinged sordid yellow, two spots at 

 apical margin in M and Cu fuscous. 



Anal segment of male as in T. medusa, new species, but with lower 

 lateral margin distinctly more sinuate. Pygofer as in T. medusa. 

 Aedcagus tubular, curved upward distally, in profile with a rather 

 long and narrow process on each side, closely adpressed to aedeagus, 

 directed cephalad and curved dorsad distally, abruptly narrowed into 

 a sinuate spine apically and recurved cephalad. Genital styles sub- 

 triangular in profile, expanding distad, ventral, apical and dorsal mar- 

 gins almost straight, dorsal process subtriangular, a short subhori- 

 zontal flange externally near base, apex rather broadly lobate and 

 twisted so that apical margin is at right angles to axis of body. 



Female genitalia as in T. musca Uhler. Pregenital sternite very 

 shallowly excavate in median portion. 



Specimens examined: 5 males and 7 females, Chance's Mountain, 

 Montserrat, B. W. I., Jan. 18, 1939, Fennah (holotype male, allotype 

 female, USNM 62008). 



This species superficially resembles T. medusa but differs in the 

 shape and direction of the aedeagal processes, which distally overlie 

 the aedeagus, whereas they underlie it in T. medusa; it differs also in 

 the shape of the dorsal process of the genital styles, which is acumi- 

 nate in T. medusa, however viewed, but broad and rounded distally 

 in posterior view in the present species. From T. musca it differs in 

 these characters and also in the relatively wider vertex. Of the 

 Greater Antillean species the closest appears to be T. horinquensis 

 Dozier, which is of a much darker hue, and differs strongly in the 

 shape and direction of the lateral processes of the aedeagus and in the 

 shape of the dorsal process of the genital styles, 



Thionia brevior Fowler 



Figure 4,/i-j 



Thionia brevior Fowler in Godman and Salvin, Biologia Centrali-Americana, 

 Rhynchota, Homoptera, vol. 2, pt. 1, p. 123, 1904. 



This species does not occur in the Lesser Antilles, nor, as far as 

 known, anywhere in the West Indies, but the opportunity is taken to 

 publish figures prepared from the type material by Dr. W. E. China 

 for comparison with the preceding species. 



Genus Acanalonia Spinola 



Acanalonia Spinola, Ann. Soc. Ent. France, ser. 1, vol. 8, p. 447, 1839 (haplotype, 

 Acanalonia servillei Spinola, loc. cit., p. 448). 



Acanalonia robiista (Walker) 



Figure 5,m-r 



Poeciloptera robusta Walker, liist of the . . . homopterous insects in the . . . 



British Museum, vol. 2, p. 449, 1851. 

 Acanalonia servillei Van Duzee, Bull. Buffalo Soc. Nat. Sci., vol. 8, No. 5, p. 38, 



1907. 



