TYCHINI 265 



HARMOMIMA (Raffray, 1904) 



This neotropical genus holds two species of montane Bolivia. It is related to 

 Harmophorus, having two basal foveae and a subepipleural sulcus on each 

 elytron, but is readily distinguished from the allied genera by having the median 

 pronotal fovea transversely dilated only, lacking a transverse subbasal sulcus 

 and therefore the pronotal base has three free foveae. The two species may be 

 separated as follows: 



Antennal segment II briefly ovate, III-VIII moniliform, with the 

 seventh slightly larger than sixth, and the eighth slight transverse, 

 IX and X strongly transverse and with the lateral face slightly cres- 

 centric ; XI ovate ; 1.2 mm grandiceps 



Antennal segment II globose, III-X moniliform with the third to 

 eighth globose, ninth and tenth slightly transverse ; XI oblong-ovate ; 

 1 mm impressicollis 



grandiceps Raffray. 1904, Yuracaris, Bolivia. Genotype. 

 impressicollis Raffray. 1904. Yuracaris, Bolivia. 



DALMOMIMA (Raffray, 1908) 



This is a monotypic genus which has a habitus veiy similar to Batrybraxis 

 but differs from this genus in having the flanks of the elytra longitudinally 

 sulcate ; Dalmomima is similar to the five preceding genera in having the elytral 

 flanks longitudinally sulcate, but of these five only Dalmomima and Bythino- 

 physis have no basal elytral foveae; it is distinct from Bythinophysis in that 

 the latter genus has widely separated posterior coxae, whereas Dalmomima has 

 the posterior coxae only slightly separated. 



The male has the head with the dorsal surface excavated anteriorly and 

 elevated and subauriculate laterally, while the female lacks this modification. 



caviceps (Raffray). 1896. Colonia Alpina, Brazil. (Batrybraxis) . Geno- 

 type. 



This concludes the section of neotropical Tychini having the flank of each 

 elytron longitudinally sulcate. The next section holds five neotropical genera in 

 which the flank of each elytron has either (1) a subhumeral fovea and an entire 

 longitudinal carina (Buris) ; (2) no subhumeral fovea but an entire longitudinal 

 carina (Batriphysis, Dalmoburis) ; (3) no subhumeral fovea but the apical half 

 of each elytron with a longitudinal carina, or (4) no subhumeral fovea, but with 

 each elytron having a longitudinal carina for the apical third of its length. This 

 is not a proposed evolutionary arrangement, and the differences between these 

 genera are many and basic, as will be noted, but is given here as a convenient 

 grouping in which neotropical tychines are divided into three sections, the 

 sulcate group, the carinate group, and the unmodified group with respect to the 

 flanks of the elytra. 



