220 LYGiEINA. 



in the centre, the sides of the opening divergent and rounded. 

 Genital segments ; the 1st, short, lies in the angular opening of the 

 last abdominal segment, resting on the 3rd genital segment, which 

 is large, round, convex, and deeply cleft in the centre ; the 2nd 

 segment appears as a short and triangular plate at each side of 

 the 3rd. 



Species 1. — Ischnodemus sabuleti.* 



LYGiEus SABULETi, Fall. Hem. Suec. 62, 23 (1829). 



Ischnodemus quadbatus, Tieb. Weit. Beitr. 338, 1-5, t. 2, fig. 11 



(1836). 

 Pachymerus becurtatus, H. Schf. Wanz. iv, 10, t. 113, fig. 355 (1839). 

 — PARALLELUS, Costa, Ann. Soc. Ent. Prance, x, 290, pi. 6, 



fig. 5 (1841). 

 MiCKOPUs SABULETI, Si.g7i. Ann. Soc, Ent. France, 3me ser. v 29, 8, 



pi. 2, fig. 7, 8 (1857). 

 Ischnodemus sabuleti, Fieb. Europ. Hem. 163, 2 (1 861) ; Stal, K. Vet. 

 Akad. Eorh. 212, 1 (1862). 



Black, dull, clothed with very fine, short, whitish hairs. 



Head very minutely punctured. Antennce | black, with sliort 

 whitish hairs ; ajoex of the 2nd and 3rd and base of the 3rd and 4th 

 joints narrowly yellow. Bostnim yellow-brown, last joint piceous. 



Thorax. — Pronotum very short, nearly as broad as long, very 

 finely punctured, the hairs at the sides very fine, longish, and 

 appressed; posterior margin with a dull ochreous line, narrow in 

 the centre and wider at the ends. Scutelltmi strongly punctured at 

 the sides. Elytra; Clavus whitish, posterior margin and apex 

 piceous ; the nerve brown, punctured ; Corium whitish, slightly 

 shining ; anterior margin dull ochreous ; posterior margin broadly 

 piceous, except the apex ; disk clear, nerves brown or piceous, punc- 

 tured. (In undeveloped examples the Corium is abbreviated, and 

 rounded posteriorly, the Membrane being represented by a narrow 

 whitish border.) Membrane slightly shining, opaque, fuscous-brown, 

 with darker nerves ; base clear whitish, except on the 2nd and 3rd 

 nerves, where a piceous spot reaches over from the posterior margin 



* In the 'Oefvcrs af K. Vet. Akad. Forh.,' 1862, Dr. Stal has referred this 

 species to the Family B/issida, Stai. 



