468 SEEEICOENIA. 



5. PyrophorUS Clarus. (Tab. XX. fig. 23, genitalia, 6 .) 



Pyrophorus clarus, Germ. Zeitschr. fiir Ent. iii. p. 18 1 ; Cand. Monogr. Elat. iv. p. 19, 1. 1. fig. 5 2 . 

 Pyrophorus angustus, Blanch, in d'Orbigny's Voyage dans l'Amer. merid. vi. 2, p. 139 3 . 



Hab. Costa Rica (Van Patten), Cache (Rogers) ; Panama, Chiriqui (Bibbe).— 

 Colombia, Bogota x 2 ; Venezuela ; Ecuador ; Bolivia 3 . 



We have received ten specimens of this species, nine from Costa Rica and one from 

 Panama. P. clarus is closely allied to P. pellucens, but differs from that insect in its 

 more elongate shape ; the males have the thorax less convex, relatively narrower, less 

 rounded at the sides, the latter being distinctly sinuate before the middle, and the hind 

 angles more divergent. The genitalia of the males are very similar, as will be seen by 

 a reference to our Plate. 



6. Pyrophorus Mgidus. (Tab. XX. fig. 24, genitalia, 6 .) 



Pyrophorus fulgidus, Germ. Zeitschr. fur Ent. iii. p. 24 ( ? ) 1 ; Cand. Monogr. Elat. iv. p. 22 2 . 

 $ . Pyrophorus adumbratus, Germ. loc. cit. p. 27 3 . 



Hab. Costa Rica (Pittier, in Mus. Brit.); Panama, Bugaba, Volcan de Chiriqui 

 (Champion), Chiriqui (Bibbe). — Colombia l 2 ; Venezuela 2 ; Brazil 1 2 3 ; Peru. 



Of this species I have seen nine examples from within our limits. The males are 

 very much smaller than the females. Some of the females have a small laterally 

 compressed tubercle at the base of the thorax in the middle, of which there is little, if 

 any, trace in the males. 



P. fulgidus and the following species, P. sirius, are the only Central-American 

 Pyrophori with the second and third joints of the antennae very short and equal in 

 length. 



7. Pyrophorus sirius. 



$ . Pyrophorus sirius, Cand. Compt.-rend. Soc. Ent. Belg. 1878, p. clxviii (Elat. Nouv. ii. p. 41) \ 

 Pyrophorus syrius, Cand. Cat. Method. Elat. p. 158 2 . 



Hab. Costa Rica 1 2 . 



Dr. Candeze has kindly lent me the type (?) of this species for examination. 

 P. sirius is closely allied to P. fulgidus, from large-sized females of which it may be 

 known by its more elongate shape, the more coarsely and more densely punctured 

 thorax, the laterally compressed tubercle at the base of which is more prominent, and 

 the coarsely punctate-striate elytra. 



8. Pyrophorus caudatus. (Tab. XX. fig. 25, genitalia, 6 .) 



Very elongate, rather narrow, moderately convex, shining, f usco-cinereo-pubeseent ; obscure castaneous, the 

 elytra castaneous ; the prothorax with a rather small, oval, slightly raised, yellow vesicle on either side 

 before the base and distant from the lateral margin ; the propleurae with a large yellow patch behind ; 



