ABS PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
Lateral styles of ovipositor expanding distally, bluntly rounded 
apically, a short spine, directed posteriorly, on dorsal margin at 
apex, apical margin setose; first and second valvulae thin, mem- 
branous, rather narrow, with sides subparallel, the former consisting 
of two lobes, the dorsal pointed apically, the ventrolateral obliquely 
truncate, the second valvulae simple, rounded apically. 
Described from two females taken by Dr. J. G. Myers on the Upper 
Hssequibo River, British Guiana (Nov. 22, 1985). One specimen in 
B.M.N.H., the other in the collection of the Imperial College of Tropi- 
cal Agriculture, Trinidad. W. E. China has indicated that the above 
differ from British Museum material in the presence of fuscous 
suffusions over the red area at the base of the wings, but states that 
semilimpida 18 a somewhat variable species. 
7b. Cephalic process present, directed anteriorly. 
Subfamily FULGORINAE 
Genus LATERNARIA Linnaeus 
Laternaria LINNAEUS, Museum Ludovicae Ulricae Regiae, p. 152, 1764. (Geno- 
type, Cicada laternaria Linnaeus, Systema naturae, ed. 10, vol. 1, p. 484, 
1758, fixed by tautonymy.) 
Trinidad specimens examined by the writer fall into two species 
agreeing reasonably with Z. laternaria Linnaeus, as interpreted by 
Da Fonseca and more doubtfully with Z. servillet Spinola as inter- 
preted by him. The writer feels constrained to leave these species 
unnamed for the present; figures are given of their male and female 
genitalia (pl. 12, figs. 316, 8319, 8320-325, respectively). 
Genus CATHEDRA Kirkaldy 
Cathedra KirKAtDY, Entomologist, vol. 36, p. 179, 1908. (Genotype, Phrictus 
serrata (Fabricius) Stoll, Natuurlyke en narr’t Leeven Naauwkeurig... 
Cicaden, pl. 29, figs. 170 and A, 1788.) 
Vertex produced anteriorly into a simple elongated cephalic proc- 
ess, hexagonal in section, directed anteriorly for most of its length, 
curved upward near apex, a short blunt spine above and below pos- 
terior half of eyes, a stout spine a short distance before eyes, a pair 
of spines dorsally about middle of cephalic process and a second pair, 
directed obliquely upward, near apex; frons with a row of eight or nine 
spines along each lateral margin, lateral carinae of frons with a similar 
row of nine spines, the anterior (basal) spine minute and the posterior 
five crowded, median carina distinct, lateral margins of frons exca- 
vated near antennae, a deep impression near frontoclypeal suture; 
elypeus rather small, slightly tumid with median carina percurrent and 
lateral margins raised; antennae set in a narrow rim, first segment 
