526 SUPPLEMENT. 
CHOASPES (p. 118). 
This name is preoccupied in Lepidoptera (Moore, 1881) and I propose to change it 
to Choastes. 
RHACIUS (p. 120). 
Rhacius sulcatulus (p. 121). 
Mr. Flohr informs me that he has found specimens of this insect in decaying trunks 
of “casahuate” (Ipomea arborescens) at Cuernavaca. We have received additional 
examples of it from Yucatan (Gawmer), and from Atlixco, Puebla (Hoge). 
BLAPSTINUS (p. 124). 
Blapstinus mexicanus (p. 124). 
Sent in plenty by Mr. Gaumer from Temax in Northern Yucatan, and singly by 
Herr Hége from Villa Lerdo. The male has the anterior tibie thickened, and feebly 
sinuate within, less strongly so than in the same sex of B. tibialis. 
Blapstinus tibialis (p. 125). 
To the localities given, add :—Mexico, Tapachula in Chiapas (Hége). 
4, Blapstinus fortis. 
Blapstinus fortis, Lec. Proc. Am. Phil. Soc. xvii. p. 420 (1878) ; Casey, Ann. N. York Acad. v. 
p. 429. 
Blapstinus interstitialis, huj. op. p. 125, Tab. VI. fig. 16. 
The specimens referred by me to this species consist of three forms, which may 
prove to be distinct :— 
(1) Prothorax more or less rounded at the sides behind, the hind angles rather obtuse, the punctuation dense 
and moderately coarse (=fortis, Lec.).—Texas, Florida, North, Central, and Eastern Mexico, Guatemala, 
Cuba. 
(2) Prothorax parallel, or even sinuate, at the sides behind, the hind angles sharp, the punctuation coarser 
and sparser.—Central Mexico to Panama. 
(3) Larger and more shining, the upper surface with a faint brassy lustre ; the prothorax shaped as in (2), 
coarsely but more sparsely punctured.—Tapachula (Hége): three examples. 
We are indebted to Capt. Casey for a typical male of B. fortis, Lec., for comparison. 
4(a). Blapstinus yucatanus. 
Elongate-oval, rather broad, somewhat depressed, pitchy-black, shining, sparsely clothed with long, decumbent, 
rather coarse hairs. Head coarsely, densely punctate, the punctures between the eyes still coarser and 
longitudinally confluent ; prothorax strongly transverse, moderately convex, widest at one-third from the 
pase, very much wider at the base than at the apex, the sides obliquely and rapidly converging from the 
middle, rounded and distinctly converging behind, the apex very deeply emarginate, the base strongly 
sinuate on either side, the anterior angles sharp and prominent, the hind angles obtuse, the surface 
densely, coarsely punctate, the punctures here and there longitudinally confluent, more distinctly so 
