148 
Psyche 
[December 
2. Anterior tarsi of $ scarcely dilated, sole of first 
joint with spongy pubescence confined to apical 14 . 
Elytral striae confused from about the 9th to the 
11th striae, the zone of confusion separated from 
the marginal area of confused punctuation by 
several regular striae. Size larger, all specimens 
seen over 22 mm. long 3 
Anterior tarsi of $ more dilated, sole of first joint 
with spongy pubescence covering at least apical 
i/ 2 > sometimes nearly whole sole. Elytra usually, 
but not always, without a zone of confused striae 
separated from the margin by regular striae. Size 
smaller, usually under 22 mm. 4 
3. Prothorax both actually and proportionately wider, 
almost exactly twice as wide as head S. guyoti 
Prothorax narrower, about 1.6 times as wide as 
head. Upon direct comparison the lateral margin 
of the prothorax is seen to be more abruptly and 
more narrowly reflexed, and the eyes to be less 
prominent than in guyoti S. confusus 
4 All other species of Irichroa 
Beutenmuller included confusus in his conception of 
guyoti , and it is possible that he had specimens of confusus 
before him when he described angelli (1918, p. 89). How- 
ever, since the entire description of angelli consists of a 
statement that it is merely a black color form of guyoti, 
since no type seems to have been designated, and since 
Beutenmuller’s material is so scattered that it is impossible 
to say that he did not have a black guyoti in his series, 
it seems best to take his statement at its face value and 
consider angelli as really a black form of Scapkinotus 
guyoti Lee. (It is to be noted that S. guyoti and S. con - 
fusus cannot be separated by color.) By thus interpreting 
Beutenmuller’s inadequate description literally, I think that 
much future confusion may be avoided, especially abroad. 
