CATHARTUS., 559 
out, so faras Tam aware. Numerous species have since the establishment of the genus 
been referred to it and to Silvanus, but, as it appears to me, in an arbitrary manner. 
I think, perhaps, it would be better to sink the genus altogether; but as a satisfactory 
study of these difficult forms will probably result in the establishment of several genera, 
there can be no harm arising from the course I here adopt of limiting Cathartus to its 
original species and one very closely allied to it. 
I may add that Reitter (Verh. zool.-bot. Ges. Wien, 1879, p. 82) distinguished the 
two genera in question as follows, viz. :— 
Joints of the club of antenna of one width . . . . . . . . Silvanus. 
The first, or the last, joint of the club smaller . . . . . . . . . .) . .) OGathartus. 
1. Cathartus cassie. (Tab. XVII. fig. 25, ¢.) 
Cathartus cassie, Reiche, Aun. Soc. Ent. Fr. 1854, p- 78°. 
Sylvanus gemellatus, Jacq.-Duv. in Sagra’s Hist. fis. polit. y nat. de Cuba, Ins. p. 104.?. 
Cathartus gemellatus, Reitter, Col. Hefte, xv. p. 126°. 
Hab. Mexico!, Tuxtla (Sallé), Tapachula, San Juan Bautista, Teapa (Hoge) ; 
GuatemaLa, El Tumbador, El Reposo, Cahabon, San Juan, Chiacam, Cubilguitz, San 
Geronimo, Senahu (Champion), Coban (Conradt); Nicaragua, Chontales (Janson) ; 
Panama, Volcan de Chiriqui (Champion).—Cura ! 2, 
This species is carried about with the seeds of Cassia fistula *, as reported by Reiche!. 
It varies a great deal in the development of the male, in which sex the hind legs are 
much elongated in the larger individuals. C. gemellatus, Duval, is apparently founded 
on small examples, in which, as is frequently the case in Cucujide, the sculpture is a 
little less definite than it is in the large forms. The elongation of the thorax is also 
an extremely variable character and our series shows that no line can be drawn between 
these two supposed species. 
2. Cathartus annectens, sp. n. 
Parallelus, subdepressus, sordide testaceus; capite prothoraceque obsolete punctatis, hoc lateribus rectis, 
angulis anterioribus minus longe lobatis; elytris densissime punctatis, opacis. 
Long. 3} millim. 
Hab. British Honpuras, Rio Hondo (Blancaneauz). 
Extremely similar to moderate-sized examples of C. cassiw, but with the elytra 
sculptured more like those of Nausibius and the typical Silvani; also with the anterior 
angle of the thorax lobed and exhibiting an impression in front. We have received 
only one example and it is of doubtful sex, the hind legs being short, but with the 
femora a good deal incrassate. The eyes are large, and placed contiguous with 
the thorax. The antenne are formed like those of C. cassiw, the ninth joint being 
* A plant cultivated at Vera Cruz and Campeche (cf. Biol. Centr.-Amer., Botany, i. p. 330). 
