Jn, 
sn 
OXACIS. 155 
tuation of the thorax and the coarser punctuation of the elytra. The elytra are eneo- 
piceous, with a greenish-zneous lustre in certain lights, and have only a narrow space 
along either side of the suture and the extreme lateral margin testaceous. 
A lyaces . 
9. Oxacis dorsalis. 
Nacerda dorsalis, Melsh. Proc. Ac. Phil. iii. p. 55’. 
Asclera dorsalis, Lec. Proc. Ac. Phil. vii. p. 21”. 
Oxacis dorsalis, Lec. New Species Col. pp. 165, 166°. 
Xanthochroa vitiatus, Hald. Journ. Ac. Phil. ser. 2, 1. p. 96 *. 
Hab. Norta America, Carolina! 2, New Orleans +, Texas ?.—Mexico (coll. F. Bates), 
Vera Cruz (f6ége). 
Found in abundance by Herr Hoge on the sea-shore at Vera Cruz. The Mexican 
specimens agree perfectly with others before me from Texas. The eleventh joint of 
the antenne is constricted at the middle in both sexes *; the right mandible is armed 
on the inner upper edge near the tip with asmall tooth; the claws are angularly dilated 
at the base; the thorax is densely and finely punctured; and the elytra have each two 
brown or fuscous longitudinal vittee which are confluent just before the apex, the vitte 
being always distinct. These characters are all present in the Texan examples. 
According to Leconte °, the claws are only very slightly dilated at the base in his genus 
(c Oxe 7 s ) 
10. Oxacis teapensis. (Tab. VII. fig. 12, ¢ .) 
Elongate, opaque, thickly pubescent; the head testaceous at the sides and in front, for the rest brownish or 
piceous, the eyes and the tips of the mandibles black, the palpi piceous; the prothorax pale yellowish- 
testaceous, with the sides and a large ovate patch on the middle of the disc brown or castaneous ; the 
elytra brownish or fuscous, with the suture very narrowly and the lateral margin rather more broadly 
pale testaceous. Head densely and finely punctured; antenne (9) rather short, piceous, the two basal 
joints and the three or four outer ones lighter, the eleventh strongly constricted at the middle; pro- 
thorax a little longer than broad, rather convex, the sides strongly rounded anteriorly, constricted at the 
middle, and gradually converging behind, the apex emarginate in the centre and shallowly grooved within 
at a little distance from the rather prominent margin, the anterior angles slightly projecting, the disc 
transversely depressed in the middle before the base and with traces of a smooth slightly raised central 
line, the surface densely and finely punctured at the sides and more coarsely so on the disc; elytra rather 
broad, densely, shallowly, and finely punctured, the apices very obtuse; beneath densely and finely 
punctured, piceous, with the prothorax (and sometimes part of the venter) testaceous ; legs (including the 
cox) testaceous, with the apices of the tibie and the tarsi piceous-brown, the entire tibiz piceous in one 
example, the claws simple. 
Length 8-83 millim. ( 9.) 
Hab. Muxico, Teapa in Tabasco (Hoge, H. H. Smith). 
Oxacis. 
Two examples, apparently both females. Except for a slight difference in the colour 
* The antenne are described by Melsheimer as having “ two short terminal joints, both together about as 
long as the tenth, in the male.” — 
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