2OO MEMOIRS ON THE COLEOPTERA 



the basally constricted head in Leptalia occurs also in Toxotus 

 cylindricollis and lateralis. 



Hapalosalia n. gen. 



The type of this genus is Leptura vibex Newm. This species, with 

 a number of others more or less closely allied, such as sph&ricollis 

 and ruficollis Say, scripta Lee., and aurata Horn, have hitherto been 

 placed in Leptura, with which they have no great affinity, either in 

 structure or general habitus. The metasternal episterna are very 

 much narrower than in any Lepturid type and the form of the 

 prothorax, nature of the ornamentation and structure of the head, 

 eyes and antennae, show unmistakably that they are allied to Lep- 

 talia and Centrodera rather than to Leptura. Some individuals 

 have the prothorax red and others black, but I am unable to say 

 whether this is fortuitous chromatic dimorphism, as there seem to be 

 no intermediates, whether it may be sexual in some cases, or whether 

 it denotes specific standing. In a series of eight examples of scripta 

 before me, the prothorax is normally black in seven and in the 

 eighth, which happens to be the only female in the series, it is red 

 but black anteriorly, at the sides beneath and with a large rounded 

 central black spot. In three examples, male and female, of sphceri- 

 collis, the color is uniformly black throughout the body and elytra, 

 and in a single female of ruficollis, where the entire prothorax is red, 

 the form of the body and prothorax is so much stouter than in the 

 females of sphcericollis, that I am disposed to give it a subspecific 

 status, at least under the only available source of inference. The 

 species are rather numerous and may be known by the following 

 characters : 



Elytra with irregular ornamentation, somewhat as in Centrodera picta; 

 body black or piceous-black, the legs pale, the hind femora black 

 apically, the antennae and elytra pale luteous, the latter with some 

 short disconnected black dashes externally and one from the middle 

 of the base, all sometimes wanting; prothorax elongate almost as 

 in Thesalia or certain Centrodera but only very finely, sparsely 

 punctate. Length (cf 9 ) 6.2-7.5 mm.; width 1.4-2.1 mm. Oregon 



and Washington State scripta Lee. 



Elytra black, with median vitta and lateral margin pale 2 



Elytra wholly black 6 



2 Elytra with the median vitta greatly expanded, so that the color is 

 luteous with rather narrow sutural and lateral black vittas; prothorax 



