SPEUEROPHTHALMA. 325 



28. Sphaerophthalma amphissa. (Tab. XIV. fig. 11, $ .) 



Long. 9-12 millim. $ , 



Hab. Mexico, Temax in North Yucatan (Gaumer). 



Head very slightly wider than the thorax, coarsely punctured, from the base of the 

 antennae thickly covered with golden pubescence ; the apex of the clypeus rounded ; 

 the mandibles broadly ferruginous in the middle ; the antennal tubercles ferruginous 

 on the outside. Behind the eyes the head projects very little, and is there about one 

 and a half times their length ; it is slightly, but distinctly, concave posteriorly ; the 

 sides are rounded. The scape of the antennae is shining, and is covered with white 

 hair ; the flagellum is covered with a dense pale down ; the third joint is one half 

 longer than the fourth. The mesonotum is coarsely punctured ; there is a broad patch 

 of golden pubescence on the sides, originating from a little behind the middle, and 

 continued down the sides of the median segment as a narrower band ; the base of the 

 mesonotum rounded ; the sides in the middle broadly incised, with a tooth at the base 

 and a blunt shining tubercle in the centre, there being also a sharp tooth before the 

 tooth at the base of the incision ; the middle of the incision acute. The apex of the 

 median segment is semiperpendicular. The pleurae are impunctate, glabrous, and 

 shining ; a semioblique crenulated keel before the middle. The abdomen closely 

 coriaceous, thickly covered with stout, stiff, depressed hair ; the basal segment with 

 long white hair ; on the second segment are two oval, shining, orange maculae ; the 

 third and following segments are densely covered with silvery pubescence ; the pygi- 

 dium densely covered with long, stiff, golden hair. The basal ventral segment has a 

 straight keel, and there are two oblique keels on the sides, and also a few punctures on 

 them ; the second segment is covered with large punctures, and with long pale fulvous 

 hair ; the other ventral segments are finely punctured and fringed with white hair. 

 The legs covered with white hair, it being especially long on the tibiae ; the tibial 

 spines are short; the apices of the tarsal joints with ferruginous hairs. 



In two examples the maculae on the second abdominal segment are shining and 

 without golden hair — in the others the golden pubescence is thick and hides the 

 sculpture — and the silvery patch on the sides of the mesonotum is wanting ; but this 

 is perhaps due to abrasion. The hinder portion of the pro pleurae may be punctured, 

 and it does not project. The hair on the apical ventral segments may be silvery 

 or golden. 



29. Sphaerophthalma orithyia. 



Long. 13-5 millim. $ . 



Hab. Mexico, Paso del Macho (Edge). 



Head slightly, but distinctly, broader than the thorax and not much shorter than it ; 

 coarsely punctured, the punctures On the front running almost into reticulations ; the 



