EUTHORAX.—OCYOTA. 163 
opinion as to the structure of the other, owing to its being covered with gum traga-. 
canth. The middle coxe are distinctly separated; and the union between the 
mesosternal and metasternal processes is very intimate, indeed so that the suture is 
obliterated. 
EUTHORAX. 
Euthoraz, Solier in Gay’s Hist. fis. y pol. Chile, Zool. iv. p. 845; Lac. Gen. Col. ii. p. 156. 
Myrmecochara, Kraatz, Linn. Ent. xi. p. 40 (1857). 
This genus has been merged in Oxypoda, but is pretty certainly entitled to distinct 
rank, and will comprise, besides the Chilian species of Solier, and the North-American 
insect described by Kraatz, the Amazonian Oxypoda aliena, Sharp. 
1. Euthorax pictipennis. 
Myrmecochara pictipennis, Kraatz, Linn. Ent. xi. p. 41". 
Hab. Nortu America, Louisiana!, Texas (fawvel).—Mexico, Jalapa (L6ge). 
This species is reputed to inhabit the nests of Termites. Mr. Hoge has only 
captured a single individual. 
OCYOTA. 
Tarsi omnes 5-articulati, posteriores articulo basali elongato, sequentibus duobus simul sumtis sequali. Pro- 
thoracis pars lateralis parum abrupte inflexa. Coxee intermedie subdistantes ; metasternum inter eas sat 
productum, cum mesosterni apice acuminato contiguo. 
This genus is established for an insect having quite the appearance of the large 
species of Homalota, of the H. xanthoptera group, but having the intermediate coxe 
more separated, and the metasternum produced far forward between the coxe, so that 
its truncate apex touches the acuminate extremity of the mesosternum, and the basal 
joint of the hind tarsi elongate. The front tarsi are, I believe, five-jointed ; but the division 
between the fourth and fifth joints, in the unique and badly preserved individual at my 
disposition, is obscure, and on this point I may be wrong. ‘The genus may be placed 
near Oxypoda; but should the front tarsi prove to be only four-jointed, it will be trans- 
ferred to a position between Myrmedonia and Homalota, where its facies would lead 
one to expect its natural position should be. 
1. Ocyota dubia. 
Nigro-fusca, elytris fusco-brunneis, antennarum basi pedibusque testaceis ; antennis crassis, setulosis, articulis 
penultimis transversis ; prothorace transversim subquadrato, basin versus leviter angustato, sat crebre 
punctulato ; elytris prothorace parum longioribus crebre punctatis; abdomine apicem versus attenuato, 
basi sparsim punctato. 
Long. 6 millim. 
Hab. GuatEMaa, Capetillo (Champion). 
Similar in appearance to the European Homalota xanthoptera, but with the hind 
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