HEM1PTERA HETEROPTERA. 57 



with two minute subapical spines. Hind femora slightly incrassated. 

 Hind tibia? a little shorter than the hind femora, much dilated above, 

 slightly dilated beneath ; the dilated part convex above, straight and 

 forming a very obtuse angle near the base beneath. Fore wings with the 

 veins of the corium brownish ; membrane aeneous-cinereous. Length of 

 the body 10 lines. 



a. Am. Presented by W. W. Saunders, Esq. 



Genus 11. PIEZOG ASTER. 



Piezogaster, Serv. Hist. Hem. 197 — Physomerus, Group 1, C. H. 412— 

 Phelaus, Stal, Hem. Afr. ii. 49. 



A. Antennae not dilated. 



a. Sides of the prothorax much dilated. 



* Fourth joint of the antennae luteous. - spinipes. 

 ** Fourth joint of the antennae black. - patulus. 



b. Sides of the prothorax hardly dilated. 



* Body dark. ------ terminalis. 



** Body pale. ------ pallens. 



B. Second and third joints of the antennae dilated. - dilaticornis. 



1. Piezogaster terminalis. 



Physomerus terminalis, C. H. 412 — Phelaus terminalis, Stal, [Hem. Afr. 

 ii. 52. 



a. South Africa. Presented by the Earl of Derby in 1843. 



I — (I. South Africa. Presented by Sir A. Smith. 



e. Cape. From M. Drege's collection. 



/, g. Natal. From M. Gueinzius' collection. 



2. Piezogaster spinipes. 



Physomerus spinipes, C. H. 412 — Phelaus spinipes, Stal, Hem. Afr. ii. 51. 

 a. West Africa. Presented by B. Frend, Esq. 



3. Piezogaster patulus. 



Mas et fcem. Niger, piceus aut fnlvus ; antennae corpore multo breviores, 

 articulo 4o nonnunquam fulvo ; prothorax scaber, angulis posticis 

 latis dilatatis valde rotundatis ; abdomen dilatatum ; femora 

 incrassata ; tibia posticm maris dimidio basali subdilatato ; tarsi et 

 fcem. tibice quatuor anteriores fulva ; membrana nigra. 



Male and female. Black or piceous or tawny. Head small ; its 

 length slightly exceeding its breadth. Eyes rather prominent. Third 

 joint of the rostrum a little shorter than the second and than the fourth, 

 which rests in a groove between the fore coxae and the middle coxae. 

 Antennas much shorter thau the body; first and second joints nearly equal 

 in length ; third shorter than the second ; fourth sometimes tawny, very 

 little longer than the third. Prothorax scabrous; longitudinal furrow very 



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