1338 FAMILY LXII. ANTHICIIXE. 



north of Marion and Putnam counties, though probably occurs in 

 fewer numbers. January 21-December 8. Most common in spring 

 and fall beneath chips, mullein leaves, stones, etc., and hibernates 

 in similar places. T. interruptiis Laf. is a mere form in which the 

 basal portion of elytra is more extended, with the rows of punctures 

 less regular. Intergrades between the two are common in the col- 

 lection at hand. 



IX. MALPORUS Casey. 18!),"). (Gr., "bad + walker.") 



Rather slender, ant-like species, possessing the characters men- 

 tioned in generic key and having the head more strongly rounded 

 and the last .joint of maxillary palpi smaller than in Lappus. 

 Three closely allied species may occur in Indiana, though but two 

 have been taken. 



KEY TO INDIANA SPECIES OF MALPORUS. 



. Elytral punctures distinct throughout the disk, fine and remote toward 



apex, closer and coarse before the middle. 



It. Thorax very strongly constricted ; body throughout more sparsely 



punctate; elytra without an apical pale spot. FOKMICARIUS. 



lib. Thorax much less strongly constricted; body more densely punctate; 



elytra more parallel, the pale crossbaud less basal, each with an 



apical pale spot. 2484. CINCTUS. 



(ta. Elytral punctures limited to the sub-basal transverse impression, which 



is strong. 2485. PROPERUS. 



2484 (7941). MALPORUS CINCTUS Say, Journ. Phil. Acad. Nat. Sci., III. 



1824, 278; ibid. II, 165. 



Dark reddish-brown, shining; elytra black or piceous. reddish at base, 

 and with a pale, narrow crossbaud, interrupted at suture, in front of mid- 

 dle, and usually a faint pale spot at margin of tips. Thorax narrower 

 than head, much longer than wide, strongly constricted on sides behind the 

 middle; the larger front lobe globose and sparsely punctured, the hind one 

 rather coarsely and densely punctured. Elytra with disk feebly, trans- 

 versely impressed on basal third, each with a distinct hump near suture 

 in front of pale bar; surface punctured and with erect set* as mentioned 

 in keys. Length 3-3.8 mm. 



Throughout the State; scarce. February 11-July 24. Occurs 

 beneath logs and rubbish, especially in sandy places near water. 

 Several dark specimens with apical pale spot lacking may be for- 

 nticarius Laf., but I am unable to satisfactorily separate them as 

 distinct. That species is said to occur from Rhode Island to Iowa. 



2485 ( -). MALPORUS PROPKKUS Casey. Ann. N. Y. Acad. Sci.. VIII. is'.i'i. 



653. 



More slender and somewhat paler than duct 11.9; eyes larger and more 

 convex; antenna? more slender. Elytra with basal transverse impression 



