458 SERRICOKNIA. 



differs in the very small fourth joint and the lamellate third joint of the tarsi. The 

 present species agrees structurally with Atkous, but it possesses a very different facies 

 from any member of that genus known to me ; the elongate, upturned hind angles of 

 the thorax is a character common to some of the other Central-American forms. 

 From Pyrophorus it may be known by the form of the tarsi and the prominent 

 front. The pubescence on the thorax is combed as it were in different directions, and 

 velvety in appearance, appearing golden in certain lights. The coloration of the 

 abdomen suggests the possibility of the insect being luminous, but this is probably 

 not the case. In Dr. Cardeze's opinion A. photinoides should form the type of a 

 new genus. 



2. Athous campanulatus. (Tab. XX. fig. 11, $ .) 



$ . Very elongate, rather broad, shining, reddish brown, sparsely and finely pubescent. Head densely, some- 

 what coarsely punctate, triangularly depressed in front ; the front moderately prominent, truncate at the 

 apex ; the eyes moderately large ; antennae slender, extending to a little beyond the humeri, joint 

 3 as long as 4. Prothorax distinctly longer than broad, slightly narrowed in front, moderately rounded 

 at the sides, the latter strongly sinuate behind ; the hind angles very elongate, narrow, and strongly 

 divergent, acute and recurved at the tip, with indications of a fine carina anteriorly ; the surface closely 

 and somewhat coarsely punctate, the punctuation becoming denser and umbilicate at the sides and base, 

 the disc with a narrow longitudinal space down the median third and a small space on either side of it 

 about the middle impunctate. Elytra three times the length of the prothorax, and a little wider than 

 it, subparallel to about the middle, and gradually narrowing beyond, flattened on the disc, the apices 

 subtruncate ; finely punctate-striate, the interstices moderately convex, rather sparsely punctured, and 

 transversely rugulose, granulate at the base. Beneath thickly punctured, the metasternum smoother, 

 the punctures rather coarse on the prosternum, coarse and umbilicate on the propleurae, and fine elsewhere. 

 Third tarsal joint sublamellate, the fourth very small. 



Length 13, breadth 3j millim. 



Hah. Guatemala, Totonicapam 10,000 feet [Champion). 



One specimen, probably found under pine-bark. It has, unfortunately, the right 

 elytron abnormally formed. It is allied to A. mexicanus, of which the male only is 

 known, but differs from that insect in having the thorax more coarsely punctured, 

 with the hind angles more elongate and strongly recurved at the tip. The thorax 

 is elongate-campanuliform in shape. 



3. Athous mexicanus. (Tab. XX. fig. 12, <* .) 



Athous mexicanus, Cand. Monogr. Elat. iii. p. 433 (cJ) 1 . 



Hab. Mexico, Jacale in Vera Cruz (Salle 1 ), Jalapa (H'dge). 



The type of this species is contained in the Salle collection, and we have also received 

 an example of it from Herr Hoge ; both are males. In this insect the hind angles of 

 the thorax are very greatly produced, narrow, and divergent, and obliquely, obsoletely 

 carinate anteriorly ; the third tarsal joint is lamellate, the basal joint nearly as loner as 

 the four others united. 



