TYRINI 325 



the others with this and previously recognized species. Such a course not only 

 saves space but it introduces the comparative method more strongly. This is 

 valuable in itself since the subgenus as a whole has a deceptively common 

 habitus, as demonstrated by Schaufuss, Reitter, and Raffray and therefore the 

 several species populations must be separated with great care to avoid con- 

 fusion. 



Hamotus (Hamotoides) veracruzensis new species 



Holotype Male. Measurements: Head 0.40 x 0.40 mm.; pronotum 0.38 

 X 0.43 mm.; elytra 0.56 x 0.80 mm.; abdomen 0.70 x 0.77 mm. Total length 

 2.04 mm. (PI. VI, XVII) 



Elongate, graceful body of a shining reddish-brown color. Integument 

 uniformly and distinctly punctate, with the elytra having the punctures 

 asperate and the antennal club granulate. Pubescence an opaque reddish-yellow 

 color, moderately short, subappressed, and not unusually sparse or abundant. 



Head with oblique tempora slightly longer than the eyes. Eyes median, 

 very large and prominent, convex and subreniform, each composed of about 

 48 large facets. Occiput and posterior half of vertex convex; a pair of very 

 large, deep vertexal foveae placed on a line passing through eye-centers. Each 

 vertexal fovea is close to an eye, separated from the eye by the united 

 diameters of two ocular facets, and each with a diameter of three facets. Just 

 anterior to each eye the side of the head is abruptly narrowed by an angulation 

 which then expands to form an antennal tubercle. The antennal tubercles are 

 separated by a deep longitudinal sulcus, the posterior end of which forms 

 the median fovea. This pubescent circular fovea thus has its lumen directed 

 apically instead of dorsally. Front narrow and vertical between antennae, 

 descending to the simple clypeus. Clypeus and labrum as in costaricensis. 

 Base of mandibles with abundant golden setae; left mandible crossed dorsal 

 to right. Ventral surface of head simple and flattened. 



Maxillary palpi large; first segment minute; second elongate, gently 

 arcuate and slightly obconical, the base much thicker and the apex much less 

 inflated than usual in the genus, apex not twice as wide as base and with the 

 internal face longitudinally sulcoid (for repose of distal palpomere?) ; third 

 segment as usual short and triangular, wider than second and about one- 

 third as long, with an acute-angular internal and a longitudinally convex outer 

 face. Fourth (distal) segment as long as eleventh antennal segment (0.234 

 mm.), one-fourth longer than second, slightly more than twice as wide as 

 second, elongate-oval, with a very obliquely truncate base and blunt apex. 

 The internal face of this last segment is entirely sulcate ; this palpal sulcus is 

 narrow, apically its margin circles the apex, enclosing the unusually apical 

 palpal cone, and basally the sulcus margins flair along the truncate base to 

 form its basal margin and hence enclose the peduncle or articular neck of the 

 segment. The palpal cone is exceptionally thick, blunt, translucent, slightly 



