Mr. T. \'. Wollaston on t/i>- Coleoptera of St. Ihltna. 403 



t<ri(»rly with minute cinereous pubescence. Instead of being 

 opufjue, alutai'i'ous, an<l tubeirulati'<l, like the hici rtosutiy it is, 

 as in the ease ot" the /ucif'ii./KSj t'aintlv shininij: and punctured. 

 Its j)unetures, however, are not so iiensely crowiU'u to_>,^ether, 

 or so coarse, as in the hitter species ; and its elytra (which are 

 scarcely so long as the anterior portion ot" the body) are more 

 consj)icuously striate, and with a single row of punctures 

 down each interstice. Its legs are exceedingly short, like 

 those of the A/fr/-^as'».s ; and its prothorax is very largely deve- 

 loj)ed — indeed, more so, perhaps, in proportion to the size of 

 the insect, than in any of the other nienibcrs of the genus 

 which have hitherto been brought to light. 



Microxylohhi^ angustu^^ n. sp. 



M. angustus, siibcylindricus, aeneiis (interdum subvirescenti-fcncus), 

 nitidulus, calms ; capitc punctate, rostro densius ac profiindius 

 punctato, oculis prominulis ; prothorace sat dense et profunde 

 punctate, ad latcra parum rotimdato, basi evidentor angusto mar- 

 ginato ; ch^tris elongatis, subparallclis, posticc gradatim attenuatis 

 ct ibidem (ociilo fortissime aniiato) mimitissinic sed puree pubes- 

 centibus, sat profunde substriuto-piuictatis. 



Long. Corp. lin. circa 2. 



Judging from three examples now before me, which were 

 taken by Mr. Melliss, the present species appears to be rather 

 larger than the }f. dehilis^ as also relatively longer, narrower, 

 and more cylindrical, the elytra (instead of being considerably 

 rounded outwards behind the middle) being very little ex- 

 panded at the sides. Its punctation likewise is altogether 

 deeper and closer, its eyes are appreciably more prominent, 

 its prothorax is more evidently margined behind, its elytra 

 have less indications of minute asperities at their base, and its 

 surface is a little less shining*. 



Microxylohius cossonoides, n. sp. 



M. elongatus, fusiformis, aeneus (aut subvirescenti-Kncus), nitiduhis, 

 minute et parce (in elytris evidentius ac seriatim) cinereo-pubes- 

 cens ; capite dense et argute pimctato, rostro elongato gracili ; 

 prothorace ovate, basi truncate et ibidem evidenter marginato, 



* I may just mention that five individuals from the late collection of 

 Mr, Melliss, and -whicli I have no hesitation in referring to the same spe- 

 cies as the single example which 1 formerly described under the name of 

 M. di'btlis, are a frijle less evidently punctured (at any rate, on tlie pro- 

 thorax) than my type of the latter, and the minute asperities at the base 

 of their elytra are not quite so developed. In all probability, however, 

 the two forms represent but very slightly modified or local races of a 

 single species. Judging from these live examples, also, the M. debilis 

 would appear occasionally, like most of the brassy forms, to become 

 darker in hue — indeed nearlv black. 



