OHASEMA.— DIOMOEUS. 105 



1. Orasema Stramineipes. (Tab. V. figg. 20, 20 a, $ ; 20 b, scutellum; 20 c, 

 antenna: Tab. VI. figg. 18, 18 a, b, trophi; 18c, d, e, ovipositor.) 



Nigra ; scapo antennarum pedibusque flavis ; alis hyalinis, nervis pallidia. 

 IiOng. fere 5 millim. 



Bab. Panama, Bugaba 800 to 1500 feet (Champion). 



Antennae slender, nearly as long as the thorax, densely covered with depressed hair ; 

 third joint a little longer than fourth. Head closely punctured all over. Antennal 

 groove moderately broad, dilated suddenly Jit the bottom. A narrow furrow, slightly 

 curved in the middle, runs down from each of the antennae, then curves round the 

 clypeus to the base of the mandibles, which are testaceous. Clypeus somewhat 

 triangular, transverse at the apex. The furrow is deepest round the clypeus. Thorax 

 more strongly punctured than the head, the lower and posterior portion of the pleurae 

 Striated. A narrow transverse furrow runs across from the tegulae, and from this two 

 much broader sutures proceed to the pronotum, thus dividing the mesonotum into two 

 somewhat triangular lateral areas and a larger area in front. From the centre of the 

 transverse furrow a short broad longitudinal one runs to the scutellum. Metanotum 

 coarsely rugose, almost reticulated in the centre ; there is a central area bordered by 

 keels which converge sharply at the top. Petiole rugose-punctured, thick, shorter than 

 ventral surface of the abdomen. Coxae blackish or greenish, closely puncture d^ 

 Abdomen not laterally compressed, triangular as seen laterally, dilated at the apex. 



Subfam. TOBYMW2E. 



This group contains some of the most elegant forms among the Chalcididae. All or 

 nearly all have the ovipositor long, and are parasites on Gall-flies, Aculeate Hymeno- 

 ptera, or Lepidoptera, The group is very numerous in species, especially in temperate 

 climates ; but little is known about the tropical species. 



DIOMOEUS. 



Diomorus, Walker, Ent. Mag. ii. p, 159 (1834) ; Mayr, Verh. z.-b. Ges. Wien, xxiv. p. 73. 



This is a genus of small extent, only two European species being known. They are 

 parasites on the Aculeate Hymenoptera living in bramble-stems. 



1. Diomorus rufipes. 



"Viridis, cupreo variegatus ; scapo pedibusque rufis ; antennarum flagello nigro, subtus testaceo ; alis hyalinis. 

 Long. 3 millim. 



Hab. Guatemala, Cerro Zunil 4000 to 5000 feet (Champion). 



The mesonotum, metanotum, and head are for the most part of a golden coppery 

 tint ; the apex of the abdomen is also coppery. The scape is narrow compared to the 

 biol. cente.-amek., Hymenopt., July 1884. pp 



