Mar., 1908.I LENG : NOTES ON COCCINELLID^E. 33 



NOTES ON COCCINELLIDiE III. 



By Charles W. Leng, 



New York City. 

 (Plate I.) 



In the preparation of the following notes, the material in the 

 National Museum, loaned through the favor of Dr. L. O. Howard, 

 has been of the greatest assistance. The fine collections of Prof. H. F. 

 Wickham and Mr. Charles Schaeffer have also supplied series which 

 have been helpful ; and examples of several species have been received 

 from Messrs. Blanchard, Fall and Nunnenmacher. I am glad to 

 express my thanks to all these friends for their kindness. 



The drawing of the underside of Anatis 15-punctata in Vol. XI, 

 December number, was made by Mr. Louis H. Joutel and should have 

 been credited to him in the explanation of the plate. 



Tribe III. Chilocorini. 



Body very convex, rounded in outline ; legs short, femora not extending beyond 

 sides of body ; antennas very short, club with four connate joints ; base of antennae 

 concealed by the broadly dilated epistoma ; epipleura? wide, concave, strongly 

 descending externally ; front coxal cavities closed, middle coxse widely separated ; 

 head deeply inserted, pronotum covering part of the eyes ; surface glabrous above, 

 finely pubescent beneath ; tarsi beneath densely spongy pubescent ; abdomen with live 

 segments 9 , six in the $ , the sixth being very small. 



The insects included in this tribe strongly resemble the Coccinel- 

 lini but they are sharply defined by the form of the epistoma, which 

 is dilated on each side so as completely to margin the eyes in front 

 and conceal the antennae. 



The males can always be distinguished by the presence of the 

 small sixth abdominal segment ; the fifth segment also differs in form 

 from that of the females, being either truncate, broadly emarginate or 

 even quite deeply emarginate. In many species the males also differ 

 by the paler color of the head, of the front angles of the thorax and of 

 the legs ; but in other species the sexes are alike in color. 



Four genera have been proposed, but in these notes one is treated 

 as a subgenus because the characters used for its separation become 

 evanescent in some of the species now known. Three genera may be 

 separated as follows : 



