288 Mr. T. V. Wollaston on Additions to Madeiran Coleoptera. 



the head — a fact which causes the neck to seem thick and un- 

 constricted ; with the two frontal sulci deep and much curved. 

 Prothorax quadrate, though, if amjthing, perhaps a trifle wider 

 behind than before ; with the anterior angles slightly porrected 

 and rather acute, but with the posterior ones right angles ; di- 

 stinctly channeled down the disk, and impressed on either side 

 at the base with a deep unpunctured fovea. Elytra rather convex 

 and somewhat deeply striated, the stria? being scarcely, or at all 

 events most obscurely, punctured ; with two very large and deep 

 impressions on the third interstice of each. Antennce rather 

 short and rufo-testaceous, with the subapical joints rounded and 

 moniliform. Legs testaceous. 



In the more acute ultimate articulation of its maxillary palpi, 

 which is extremely long and with its terminal half almost acicu- 

 lated, as well as in its excessively minute eyes (which, being also 

 completely sunken or depressed, give the head a remarkably oval 

 and posteriorly-unconstricted appearance) and the rather short 

 and moniliform subapical joints of its (abbreviated) antenna?, 

 the single specimen from which the above diagnosis has been 

 compiled might almost be regarded as generically distinct from 

 the other Trechi which have hitherto been detected in these 

 islands. Nevertheless it cannot be a Trechicus (to which I am 

 informed by Dr. Schaum the Trechus fimicola of the 'Ins. Mad/ 

 should be referred) ; for it has the flexuose frontal furrows and 

 the ordinary recurved first elytral stria (emptying itself, as usual, 

 into the fifth), which do not appear to obtain in that group ; 

 and I am compelled therefore to cite it as a Trechus. But, as 

 the example now before me is unfortunately a female, I am un- 

 able to state whether the anterior male feet present anything pe- 

 culiar in their mode of dilatation, whilst the fact of the specimen 

 being unique prevents me from dissecting it in order to observe 

 the exact structure of its lower lip ; so that, until further mate- 

 rial is obtained, I would desire to assign it to this genus merely 

 provisionally. 



Assuming it, however, to be a true Trechus, it may at once be 

 known by its somewhat narrow oblong outline and pale rufo- 

 ferruginous hue, by its extremely diminutive eyes and square 

 prothorax, and by its rather short and submoniliform antenna?. 

 In general facies, indeed, it has a good deal in common with the 

 T. quadricollis (hitherto unique) ; but its much smaller bulk 

 and different antenna? and eyes will easily separate it from that 

 insect. 



It is to Senhor Moniz that we are indebted for the discovery 

 of the T. minyops, — two specimens, one of which he has kindly 

 presented to the collection of the British Museum, having been 

 taken by him at S. Antonio da Serra. 



