Some Hypermetamorphic Beetles 7 



of the metathorax, tapering to the apex. Head trapezoidal, 

 length and breadth almost equal, and but little narrower than 

 metathorax ; antennae with three joints and a terminal filament, 

 not as long as the head ; labrum produced, entirely covering 

 mandibles, indexed at sides forming a little ridge below, also 

 bearing on each side in front of the mandibles a row of spines ; 

 mandibles simple, short, curved inward; labial palpi short, soft, 

 two-jointed with base covered by mandibles. Legs well-armed 

 with spines ; coxae hollowed out for the reception of the femora. 

 Tarsus apparently three-jointed with a long claw, almost entirely 

 concealed by a large, transparent, fleshy, elliptical sucker which is 

 double its length. Last ventral segment constructed to serve as 

 a clasper or sucker. 



For the comparison of Myodites triunguloids with those of 

 Rhipiphorus, and also of the Meloidae and Stylopidae, the reader 

 is referred to the table at the close of Part I. 



Myodites minimus n. sp. 1 Male, Belmont, Neb., length 4 mm. 



Head depressed, rather coarsely and unevenly punctate, clad 

 with very sparse, whitish pubescence ; antennae doubly flabellate, 

 n-jointed, very finely punctate throughout; vertex between the 

 antennae elevated, rounded, not carinate. Prothorax very un- 

 evenly and coarsely punctate ; laterally, basally, apically, and dis- 

 cally, glabrous, shining; pubescence very sparse; not carinate 

 and but slightly and very broadly grooved mesially toward apex. 

 Mesothorax with scutellum concealed ; apical half coarsely punc- 

 tate ; posterior margin straight. Mesothorax sparsely punctate ; 

 postscutellum shining, glabrous, laterally converging, apically 

 truncate. Abdomen coarsely, sparsely, unevenly punctate ; finely 

 but sparsely pubescent. Body sparsely punctate, pubescent be- 

 neath. Elytra sparsely and shadowy punctate. Posterior tarsi 

 with the first joint not remarkably elongate, as long as second 

 and third joints together, but not equaling the length of fourth, 

 apically thickened, twice as thick as succeeding joints, obliquely 

 truncate, and emarginate behind; second joint over twice as long 

 as third; claws as long as second joint, pectinate. Anterior and 

 median tibiae with the first joint equaling second and third com- 



x See pi. I, fig. 11. 



159 



