286 GEO. H. HORN, 



From Cyclonotum it differs in the very narrow prosternuni in front 

 of the coxse, the compact antennal club and slightly convex mentum. 

 From Dactylosternum it differs in the absence of the carina of the 

 prosternum, the form of the antennal club, the slightly curved lateral 

 suture of the metasteruum. 



One species is known in our fauna. 



P. palmariim Schwarz. — Eather broadly oval, convex, piceous black, 

 sbiuing. Auteniiie and palpi pale rufo-testaceous. Head minutely transversely 

 strigose, sparsely punctulale. Thorax minutely alutaceous, sparsely puuctulate. 

 Elytra sparsely, obsoletely punctate, the punctures confused without tendency 

 to form rows, sutural stria moderately well impressed from apex one-third toward 

 base. Body beneath opaque. Legs bright rufo-testaceous. Length .07 inch.; 

 1.75 mm. 



Not very different in form from C. subciipreus, although less dis- 

 tinctly punctured. The anterior part of the head is usually paler. 

 The sides of thorax and tips of elytra are described as sometimes 

 red, but this is rather a translucency than difference of color. 



Occurs at Enterprise, Fla., feeding on the sap of Palmetto. 



PH.ENONOTIJM Sharp. 



Mentum quadrate, a little wider than long, slightly narrowed be- 

 hind, apex broadly emarginate, lower face concave, more or less 

 punctured. Maxillary palpi moderate in length, the last joint 

 slightly longer than the preceding. Antennae 9-j()inted, the club 

 loosely articulated. Elytra confusedly punctate, without trace of 

 stride. Prosternum short in front of the coxse; not carinate between 

 them. Metasternura obtusely elevated along the median line, pro- 

 longed between and in front of the middle coxte, meeting the me- 

 sosternal elevation, which forms but a very small part of the inter- 

 coxal carina. Tarsi 5-jointed, claws simple. 



In addition to the characters given by Dr. Sharp, two others, 

 seemingly of great importance, have been observed. The suture 

 between the metasteruum and its episternum is a curved line convex 

 inwardly so that the episternum is narrower at either end than at 

 middle. The first ventral segment is not carinate. 



The first of these characters is only indicated in the posterior part 

 of the episternum in Cyclonotum orbiculare, and it will be observed 

 at the same time that its first ventral segment is also not carinate. 

 'J'hese characters exhibit the intermediate position occupied by or- 

 biculare in its relation to Dactylosterura and the present genus, and 

 which is further emphasized by the absence of prosternal carina. 



Two species are known in our fauna. 



