[Januaiy, 



4 



COLEOPTERA. 

 STAPHYLINID^. 

 MUSICODERUS. 

 Mnsicoderns, Sharp, Biol. Centr.-Am., Coleopt. i. 2, p. 455 (1885.) 



MUSICODERUS SPINICORNIS, U. Sp. 



Black, the mandibles and fifth tarsal joint piceous, the claws testaceous ; the 

 elytra and hind body clothed with long- scattered decumbent hairs intermixed 

 with very long erect black sets ; the punctures on the head and thorax eacli 

 bearing a long erect seta ; the legs pilose ; the tibia? with a row of spines on 

 their outer edge ; the anterior femora with numerous closely placed long spines 

 beneath in <? , and four spines in ? . Antenna- setulose, rather stout, moderately 

 long ; joints 5-10 subquadrate, becoming shorter outwards ; 6-10 transverse 

 in 9 ; joint 1 armed with three long spines (the intermediate one longer than 

 the othei-s) at the tip beneath in S ■ Mandibles about as long as the head 

 in 9 , much longer in S ■ Head not wider than the thorax in ? , miich broader 

 in S , depressed and obsoletely canaliculate in the centre between the eyes in 

 both sexes, and impressed with scattered coarse pimctures, except along the 

 middle. Thorax with a dorsal series of five punctures and also with other 

 scattered coarse punctures towards the sides. Scutellum coarsely punctate. 

 Elytra broad, much longer than the; thorax, impressed with scattered moderately 

 coarse punctures. Hind body somewhat closely, coarsely punctate... 



Length, 10.\ nnn. 



Hab : Costa Rica, Pitaliaya ; alt. 1400 metres. 



One pair, fotmcl in November. Near If. cejjhalotes. Sharp, from 

 Panama ; but with the antennae and hind body entirely black, the 

 antennoi shorter and stouter, the second joint of the labial palpi not 

 longer than the first, the elytra much longer, the posterior femora 

 without true spines, the anterior femora closely spinose beneath in 

 the male, and the first antennal joint armed with three spines at the 

 tip in that sex. Numerous specimens of M. ceplialott's were captured 

 by myself in Chiriqui, but unfortunately no note was made as to their 

 habits. The diagnosis of Musicoderus requires modification to include 

 M. spinicornis, the long second joint of the labial palpi having been 

 selected as one of the generic characters ; but in the armature of the 

 femora, &c., the present species agrees perfectly with M. cephalotes and 

 M. gracilis. The allied genus Onthodyynus, Sharp, has also been 

 found in Bromeliads, and it is highly probable that Misantlius lives 

 in similar plants. 



CALANDRID^. 



Metamasius. 

 Metamn ius, Horn, Proc. Am. Phil. Soc. xiii, pp. 408, 410 (1873) ; 

 Cliampion, Biol. Centr.-Am., Coleopt. iv, 7, p. 103 (1910). 



