124 GEO. H. HORN. M. D. 



obsoletely pectinate at base. Last ventral segment with a strongly elevated trans- 

 verse carina. Posterior trochanters dentiform at tip. Posterior tarsi slender, not 

 pilose beneath. 



The sexual characters mark this as a very peculiar species. It is allied 

 in many respects to scoporins. The prominence of the hind trochanter 

 has never been observed in any other species. No value is attached to 

 the 9-jointed antennae, as in mucofens it has been observed that speci- 

 mens seem to be indiscriminately nine or teu jointed. 



One male. Arizona. 



PLUSIOTIS Burm. 



P. liW^OOdii n. sp. — Form oval, robust, surface bright brilliant green with a 

 slight golden lustre from the surface, tarsi violaceous. Head sparsely punctate, 

 clypeal margin narrowly reflexed. Antennte piceous, basal joint bright green. 

 Thorax not twice as wide as long, a little narrower at apex, broadest at middle, 

 hind angles nearly rectangular, surface sparsely coarsely punctate with finer punc- 

 tures intermixed, the punctures denser at the sides, especially in front. Scutellum 

 coarsely punctate. Elytra wider at base than the thorax, broadest slightly behind 

 the middle, apical umbones moderately' prominent, surface obsoletely striate, 

 nearly entirely obliterated at the sides, striae punctate, the intervals flat, with 

 course sparsely placed punctures with finer punctures intermixed. Pjigidium 

 rugulose at the sides, closely not coarsely punctate. Body beneath a little more 

 polished than above, sides of metasternum coarsely punctate. Abdomen much 

 more sparsely and finely punctate. Legs bright green, tibiae distinctly golden ex- 

 ternally. Length 1.-1.12 inch: 25-28 mm: 



The male has the anterior claw longer than the posterior on each tarsus 

 as is usual, but that of the front tarsus is suddenly acuminate near the 

 tip. 



This species is easily known from cither of our other species, gloriosu 

 having sulcate elytra, and iyeCoJi^ei deeply striate elytra. The elytral 

 sculpture resembles that of Chrysina. 



Two specimens from the Eio Grande, Texas, collected by my friend, 

 Dr. H. C. Wood, to whom I have great pleasure in dedicating the species. 

 I have seen another specimen in the Museum of the Jardin des Plantes 

 at Paris. 



ORIZ.\BlIS Fairm. 



O. Snowii n. sp. — Dark castaneous, moderately shining, beneath moderately 

 densely clothed with short, reddish brown hair. Head densely punctured and 

 opaque, frontal suture arcuate, clypeus in front reflexed, on each side more ele- 

 vated so as to bebidentate,at middle close to the frontal suture elevated in a slight 

 tubercle. Thorax about one-third wider than long, narrower in front, sides ar- 

 cuate, hind angles broadly rounded, lateral margin fimbriate with short hairs, 

 base with a distinct and entire marginal line, surface coarsely and very densely 

 punctured near the anterior angles from which point the punctures become grad- 

 ually finer, the middle of the disc being very finely and sparsely punctured ; 



