RHINOTMETTTS.— TETRAGONOTES. 457 



elytra have an elongate dark spot placed close to the suture below the middle, but 

 whether this is accidental or normal I am unable to say. 



5. Ehinotmetus parvulus. 



Black, clothed with yellow pubescence ; legs fulvous ; head strongly, the thorax more finely and closely, punc- 

 tured ; elytra finely punctate-striate, sparingly clothed with yellow hairs. 



Length 1^-2 lines. 



Head strongly and closely punctured at the vertex, sparingly clothed with yellow hairs ; the anterior portion 

 of the face divided by a longitudinal ridge ; antennae less than half the body in length, piceous, the lower 

 joints fulvous below, all the joints short and robust, the terminal ones somewhat thickened ; thorax scarcely 

 longer than broad, the sides slightly narrowed and deflexed anteriorly, the surface rather flattened, closely 

 and finely punctured, clothed with yellow pubescence which does not hide the punctuation ; elytra closely 

 and distinctly punctate-striate anteriorly, the punctuation quite obsolete towards the apices, similarly 

 pubescent to the thorax ; legs fulvous ; posterior tibiae with a single spur. 



Eab. Panama, Volcan de Chiriqui {Champion). 



Smaller than any other described species of Ehinotmetus, with all of which the present 

 one agrees in the shape of the thorax and the single spur to the posterior tibiae ; the 

 black colour, yellow pubescence, and the fulvous legs, will help in the recognition of 

 B. parvulus. 



TETRAGONOTES. 



Tetragonotes, Clark, Cat. of Halticidse, p. 53 (1860). 



The long and narrow shape, and also the elongate and laterally subangulate thorax, 

 help in distinguishing the species placed in Tetragonotes from those of most other 

 genera, and make it comparatively easy of recognition. Seven species from different 

 parts of Tropical South America have been described by Clark; two have been described 

 from Guatemala by Harold, and I now add two others (one of which is described 

 as new) from our country. 



l. Tetragonotes oculata. (Tab. XXV. figg. 21, 22.) 



Tetragonotes oculata, Harold, Coleopt. Hefte, xiii. p. 10 (1875) 1 . 

 Hob. Guatemala 1 ; Panama, Volcan de Chiriqui 3000 feet {Champion). 



The description of the author agrees with the typical form, in which the elytra have 

 an obscure spot at the base and another below the middle ; there are, however, quite 

 as many specimens before me in which the elytra are without spots ; the thorax and 

 the antennae are also subject to changes in colour, being either of light or darker tint. 

 The species will be recognized by the opaque general colour of its upper surface, caused 

 by the very short and close pubescence, and the subangulate sides of the thorax. Many 

 specimens were obtained by Mr. Champion by beating herbage on the margins of the 

 coffee plantations on the slopes of the Volcan de Chiriqui, at the commencement of the 



rainy season. 



biol. CENTK.-AMER., Coleopt., Vol. VI. Pt. 1, June 1886. 3 n 



