and Species of Coleojitera. 35.'i 



Resembles /?. piisiUitiUj Paso. (Joum. of Eiitoin. i. p. 'A2C), 

 pi. xvi. fin^. 8)*, but it has, inter alia, considi-raljly shorter 

 autenmo, a prothorax about e(jual in length and breadth, and 

 the disk of the elytra with four costa;, the second longer and 

 gradually obliterated bcliiud. 



lifn/pasma nanum. 



li. ferrugincum, indunicnto grisco tectum ; nntcnnis articulo ultimo ut 

 in specie i>riecedonte iramisso : prothorace transverso,confc'rtim gra- 

 nulate, iu medio i)lanato. ad latera panmi explanato, marginibus 

 vix crenatis ; scutcllo semitirculari ; olytris posticelonter angus- 

 tioribus, singulis disco quinquecostatis, ct)sta intcrioro scute llari 

 vel brevi, (juatuor cxterioribus versus apicem coutluentibus, iuter- 

 stitiis biseriatira rugoso-punctatis ; pedibus rufescentibus, tarsis 

 posticis reliquis vix longioribus. Long. 1^ lin. 



Ifab. Amazons (Ega). 



The last joint of the antenna? in this species is nearly as 

 obsolete as it is in Xosoderma; and the prothorax is not longi- 

 tudinally excavated above, as in the other two species. 



EXENIOTIS. 



Caput parvum, retractum ; labrum breve, sub clypeo insertum ; su- 

 tura dypeali nidla ; /o6j* oculares clevati. Ocijj rotundati, fortiter 

 granulati. Antenncr validoe, pilosae, 11-articulata^, art. primo cras- 

 siore, 3 sequentibus lougioribus, ca;teris ad octavum quadrangulari- 

 bus, 9., 10., 11. clavam Ibrmantibus, duobus primis transvcrsim tri- 

 angularibus, ultimo rotundato. Prothorax oblongus, antice utrin- 

 que calloso-Iobatus. ScutelJum invisum. Elytra elongata, postice 

 gradatim angustiora. Femora linearia ; tihioi recta), haud calca- 

 rata) ; tarsi validi, cylindrici, subtus parce pdosi, articulo ultimo 

 caeteris conjunctim fere sequali. Prosternum latum, depressum, 

 postice angulatum. Mesosternum latum, antice emarginatum. Me- 

 tasternum elongatum. Coxce anticse parva>, modice distantes. 



The only exponent of this genus is a singular-looking insect 

 covered, in a fresh state, Avith a crust, masking much of its 

 sculpture. The mentum, as it appears in situ, appears to be 

 large, transverse, hiding the maxillae, as in E/ii/pasma, to 

 which it is allied, and Avith a broad peduncle attaching it to 

 the jugulum ; the palpi and mandibles are deeply seated, and 

 the labium is very small and transverse. 



* In this figure the costae are not connected behind, and the short one 

 (second from the suture) only exists in the shape of a few rather more 

 elevated granules. The sculpture of the three species, however, is masked 

 by the remains of the crustaceous substance with which, probably, they 

 are entirolv covered in a fresh state. 



