PAEATRITOMA.— MYCOPHTHOKTTS. 73 



good deal in colour and somewhat in size. The elytra in some specimens are more or 

 less infuscate at the base ; in others the base is quite black, but narrowly so, and the 

 red portion is then much narrower on the margin than in the middle and forms a 

 saddle-shaped fascia. The lateral margins of the thorax in some examples are widely 

 yellow ; but in others they are only narrowly so, except at the front angles. We have 

 received many specimens. 



3. Paratritoma caduca. (Tab. I v. fig. 12.) ^ 



Oblongo-ovata, flava ; capitis vertice, prothoracis macula diseoidali transversa, antennaram clava et corpore 

 eubtus ex parte nigro-piceis, elytris nigris ante medium flavo-fasciatis ; capite prothoraceque crebre sat 

 fortiter punctatis. Long. 2|-3 millim. 



Hal. Guatemala, Capetillo, Cerro Zunil (Champion). 



This species differs from P. divisa in colour : the head, thorax, and fascia of the 

 elytra are orange-yellow (instead of blood-red), and the underside is more variegated 

 with the yellow colour. The thorax is yellow, with a central mark which is often 

 divided by a yellow line and has a lateral spot-like projection on each side ; this mark 

 touches the front margin, but though it varies and is sometimes reduced to a mere 

 shade I have not seen any specimen in which it reaches the other margins. P. caduca 

 is very nearly allied to P. divisa, but is smaller and narrower and more feebly built. 

 Five specimens, four of which are from Capetillo. 



4. Paratritoma vivida. 



Oblongo-ovata, nigra ; capite, prothoracis angulis anticis, antennarum articulis duobus basalibus et abdomine 

 aurantiacis ; elytris sanguineis, profunde punctato-striatis. Long. 3| millim. 



Hal. Guatemala, Cerro Zunil (Champion). 



The elytra in this species are entirely blood-red, with the punctures in the striae 

 larger and less numerous than in P. divisa. The head is red, but much clouded with 

 black. The thorax is black, with the front and lateral margins narrowly, and the front 

 angles widely, yellow ; its disc is deeply but rather sparingly punctured. The scutellum, 

 underside (excepting the abdomen), and legs are black. 



A single specimen. 



MYCOPHTHORUS. 



Mycophtorus, Lacordaire, Monogr. Erotyl. p. 198 (1842). 

 Mycophthorus, Crotch, Cist. Ent. i. p. 470 (1876). 



The difference between this genus and Mycotretus is very slight ; it consists chiefly 

 in the antennas having short bead-shaped joints, the third being very little elongate, 

 and the club short, round, and with its joints connate. The general texture is as in 

 Lybas, lucid and with a varnished, shining appearance, at least in the species which I 

 identify with M. pauperculus. 



biol. cente.-amee., Coleopt., Vol. VII., June 1888. L* 



