SOSYLUS.—PROLYCTUS. 485 
remotely punctate. Elytra with broad costz, the first abbreviated before the apex, and 
at its extremity surmouuted with two or three short sete, the broad intervals quite 
destitute of sculpture. 
This is another extremely distinct species, of which only one example has been 
obtained. It has the peculiarity that the anterior coxe are prolonged externally so as 
to form a short free angle. This peculiarity occurs, though not to so marked an ex- 
tent, in S. salvini, and I have little doubt these two remarkable insects will ultimately 
form a distinct genus, of which S. crassus, Pascoe, may possibly also be a member. 
- Subfam. BOTHRIDERINA. 
The great separation of all the coxe is characteristic of this group, and in conjunction 
with the insertion of the antenne, and with the absence of the aciculate palpi of the 
Cerylinee and Lapethine, is sufficiently distinctive. 
PROLYCTUS. 
Prolyctus, Zimmermann, Trans. Am. Ent. Soc. ii. p. 254 (1869). 
Machlotes, Horn, Proc. Am. Phil. Soc. xvii. p. 585 (nec Pascoe). 
This genus appears to range from the southern parts of the United States to the 
southern limits of our region, but I am not acquainted with any South-American 
species belonging to it. Machlotes, Pascoe, may perhaps be retained as distinct with 
advantage. 
These appear, even when met with, to be always rare insects. 
1. Prolyctus dorsalis. 
Prolyctus dorsalis, Reitter, Stett. ent. Zeit. 1877, p. 346°. 
Hab. Mexico!, Jalapa (Hoge, M. Trujillo), Esperanza (Hoge); Guatemana, Mirandilla, 
Balheu (Champion). 
_ If I am correct in my interpretation of Reitter’s very brief description, P. dorsalis is 
a species very similar indeed to the North-American P. exaratus, but having the margin 
of the discoidal depression on the thorax less costate-elevate, the elytral coste rather 
less elevated, and no trace of any costation or punctuation on the second interval of the 
elytra. P.(Bothrideres) latus, Pascoe, is extremely similar to P. dorsalis, but in it the 
two median convergent lines on the anterior part of the thorax are entirely wanting. 
2. Prolyctus sculpticollis, sp.n. (Tab. XV. fig. 15.) 
Fusco-niger, opacus, prothorace acute, intricater multicostatis ; elytris argute costatis, intervallis omnino 
esculpturatis. 
Long. 5-7 millim. . 
Hab. Mexico, Temax in North Yucatan (Gaumer); British Honpvuras, Belize 
(Blancaneauaz) ; GuatemaLa, San Gerénimo, San Joaquin, Zapote (Champion). 
