68 MALACODERMATA. 
Section II. Elytra with the sides parallel or narrowed towards the apex. 
4. Daiphron proteum. (Tab. V. figg. 14, 15, 16.) 
Nigrum ; capite infra rufo, supra vittis tribus rufis ; prothorace quadrato angulis rotundatis, rufo, plerumque 
nigro-vittato ; elytris rufis vel nigris, vel nigro rufoque fasciatis vel dimidiatis; pedibus nigris, basi sepe 
rufis. Long. 10-14 millim. 
Var. a. Elytris rufis, pedibus nigris. 
Var. (3. Elytris rufis, pedibus basi rufis. 
Var. y. Elytris rufis fascia lata apiceque nigris, pedibus nigris, basi rufis. 
Var. 5. Elytris nigris, humeris et fascia mediana rufis, pedibus vel nigris vel basi rufis. 
Var. e. Elytris basi rufis, sutura prope scutellum et apice late nigris, pedibus vel nigris vel basi rufis. 
Var. ¢. Elytris nigris, humeris tantum rufis, vel totis nigris, pedibus nigris. 
Var. n. Prothorace lete rufo, haud vittato, elytris totis nigris, pedibus vel nigris vel basi rufis. 
Hab. Var. a. Mexico, Cordova (Sallé); GUATEMALA, Capetillo, San Gerdnimo, 
Panzos, Cahabon, Cubulco, Teleman.—Var. B. Mexico, Oaxaca, Cordova (Sallé) ; 
Costa Rica, Volcan de Irazu (Rogers).—Var. y. Mexico, Oaxaca, Cordova (Sallé, 
Boucard); Guaremana, Capetillo, Chacoj, Senahu, Teleman (Champion).—Var. 64. 
Mexico, Cordova, Vera Cruz, Tuxtla (Sal/é) ; GuaTemaLa, Capetillo, Zapote (Champion). 
—Var. ¢«. Muxico, Cordova, Tuxtla (Sallé); GUATEMALA, Capetillo, Duefas, Chiacam 
(Champion).—Var. ¢. Mexico, Orizaba (Sallé); GUATEMALA, Capetillo, San Geronimo, 
Senahu, San Isidro (Champion).—Var. 7. Mexico, Tuxtla (Sal/é) ; British Honpuras, 
river Sarstoon (Blancaneaux); GUATEMALA, Panzos, Teleman, San Geronimo (Champion). 
Figure 14 of the Plate represents a female of var. y, from Capetillo ; figure 15, a female 
of var. «, from San Gerdnimo ; figure 16, a male of var. ¢, from Capetillo. | 
A singularly variable or polymorphic species. The head is very constant in colour, 
as is the black body. Some of the varieties appear to be tolerably distinct segregated 
forms, such as var. n. Var. y is the form mimicked by Photuris fasciata, mentioned at 
page 06 of this volume. 
CH AULIOGNATHUS. 
Chauliognathus, Hentz, Trans. Am. Phil. Soc. new ser. i. p. 460 (1830). 
Chauliognathus is peculiarly a new-world genus of Telephoride. It is pretty evenly 
distributed over the whole of both North and South America; but the species found in 
the temperate parts are more feebly developed than those of the tropics. The genus 
is remarkable for the possession of a thread-like lobe to the maxille, which, according 
to Leconte, can be protruded from the mouth when alive. Between thirty and forty 
species have been already described. 
Section I. Elytra ample, covering the abdomen. 
1. Chauliognathus rex. 
Niger; prothorace elytrisque ochraceis, his triente apicali, illo puncto discoidali, nigris ; abdominis limbo 
laterali, segmentis dorsalibus apiceque flavis. Long. 20-23 millim. ¢ Q. 
