104 Journal New York Entomological Society. [Voi.vu. 



Africa and Sticiwlotis of Asia. They are rounded, subglobular insects 

 of small or moderate size, recalling Chilocorini in general appearance 

 but with the formation of the front nearly as in Coccinellini. The 

 minute species of the United States, which we have heretofore desig- 

 nated by the name Cryptognatha, because of prosternal structure, to- 

 gether with CEneis, belong to another taxonomic division of the family 

 characterized by a more compact body and narrow epipleurse. 

 Xestolotis will be characterized in an appendix to the present paper. 



It is possible that Menoscelis and Thalassa may also form either a 

 part of this tribe or a special tribe closely related, but I have seen no 

 examples. 



Chilocorini. 



The genera of this tribe have quite a different general habitus from 

 those of the Coccinellini, being still more strongly convex and even 

 subcompressed, with the outer part of the epipleurse still more Steeply 

 descending ; the prevailing type of ornamentation, also, is different, 

 being black with pale spots, while in the latter it is usually pale 

 with black spots. Besides the radically different structure of the 

 epistoma, the antennae diverge widely from those of the preceding 

 tribes, except some of the Pentiliini, being very short, compact and 

 narrowly clavate. The three American genera represented before me 

 are the following : — 



Tibiae obtusely dentate externally near the base ; pronotum pubescent toward the sides, 

 with a double marginal line laterally at the base ; posterior legs moderately re- 

 tractile, the abdomen and epipleurce concave for the femora t hilvcorus 



Tibiae not dentate externally ; pronotum not pubescent toward the side margins, with 

 tbe double marginal line at the sides of the base not evident ; in Axion, how- 

 ever, with the edge impressed near the sides of the base, forming a closer 



junction with the edges of the elytra 2 



2 — Posterior legs strongly retractile, epipleurte and base of the abdomen deeply con- 

 cave for the femora ; body large, extremely convex or subcompressed and very 



minutely punctulate Axiori 



Posterior legs not retractile, the abdomen and epipleuiLV not concave behind the coxde ; 

 body small, usually with more distinct punctuation ; ornamentation variable. 



Exochomus 

 In Cliiloconts and Axion the upper surface is deep black, the com- 

 bined elytra having two or three red spots ; the former occurs on both 

 sides of the continent but Axion seems to be peculiarly characteristic 



of the Sonoran fauna. 



Chilocorus Leach. 



In this genus the species have a remarkable superficial community 



