INSECTA MADERENSIA. ' 19 



in reality they are but offshoots, in like manner, from central groups. Trvie it is 

 that the singular structiu-e of its antenna? (which have nevertheless, however, 

 peculiarities of theii' own in the proportions of then- joints) would tend to identify 

 it T\dth Loricera ; but still there is no reason why that very character may not be 

 typical of a small cluster of collateral forms, in precisely the same manner as is the 

 case with Habrocerus and Tricliophya amongst the StaphyUmdce. To say nothing 

 of the modifications sufficiently evident in some of its antennal articulations 

 (amongst which, however, the very long and trinodose thu'd one should be par- 

 ticularly noticed), our present insect differs from Loricera proper, primarily, in 

 the construction of its mentum, which has no uidication whatsoever of a tooth in 

 the centre of its emargination, and has its lobes moreover externally pilose and in- 

 ternally increased by a small lateral projection.. The oater fissures, likemse, of its 

 maxilljB are different from those of the true Loricera ; its mandibles have a deep 

 external incision at their base ; its upper lip is very distinctly trimcated and emar- 

 ginated at the apex ; and the penultimate joint of its labial palpi is much elongated, 

 subflexuose, and has the rudiments of nodules on its inner edge. In its outward 

 aspect also the insect unquestionably recedes from Loricera, its elliptical elytra 

 and extremely elongated legs giving it a very peculiar appearance. StiE, I have 

 thought it better, in the present instance, not to isolate it ; and have merely pro- 

 posed a subgeneric name, in case that future investigations, as is not improbable, 

 should bring to light other, collateral, forms, ranging beneath a similar type, and 

 so render its separation desirable. 



14. Loricera WoUastomi. (Tab. I. flg. 2.) 

 It. piceo-brunnea, elytris ellipticis impunctato-striatis, antennis pedibusque testaceis. 

 Long. Corp. lin. 4. 



Loricera Wollastonii, Javet, Bull, de la Soc. Ent. ile France (2'*'>'« serie) x. 2.3 (1852). 



Habitat sub lapidibus truncisque arborum prolapsis, vel ad fontes, per regionem Maderse sylvaticam, 

 inde a 3500' s. m., toto anno ; rarissima. 



L. dark piceous-brown, slightly sbining. Head and prothorax with a greenish or seneous tinge ; the 

 former broad, with a depression down the forehead, and constricted behind the eyes, which are 

 prominent ; the latter narrow, cordate, with a deep fovea on each side behind. Elytra elliptical, 

 much rounded off at the shoulders and acuminated posteriorly, flattened, deeply striated, the 

 striffi being impunctate, and with three, sometimes obsolete, depressions down the disk of each. 

 Mouth, legs, and antenna testaceous. 



Apparently extremely rare, although widely distributed thi-oughout the sylvan 

 districts of Madeu-a, above the altitude of about 3500 feet. It occm-s under stones 

 and fallen tunber in moist spots, especially in the immediate vicinity of the minute 

 trickling streams which issue from out of the crevices of the rocks in the dense 

 ravines of a hi^h elevation. I fii-st discovered it, on the 18th of February 1849, 



d2 



