a.] RHTNCHOPHOR.V. 427 



I. Protborax plus ou moins gibbeux, nettement vcrruquoux en 



avaut, ponctue en arriere. 



i. Ilanches auterieures isolees de la tete, en avant, par une 

 baude prosternale assez large. Sommet des elytres excave 

 et dentele en dessas, ferine horizontalement derriere 1'abdo- 

 men en dessous IPS = TOMICCS. 



ii. Hancbes anterieures atteignant a pea pros le bord anterieur 

 da sternum. Sommet des elytres simplement retus en dessas, 



' applique centre 1'abdomen en dessoas TAPHROBTCHCS. 



II. P^rothorax non gibbeux, convert de grains ecrases ou cbagrine. 



Elytres obtuses a la declivite posterieure DBTOC^TES. 



For the following extract from LowendaTs work and for its translation 

 I am indebted to the kindness of Mr. "W. F. H. Blandford : 



I. Funiculus of antennae 5-jointed ; club jointed on both sides, 



longer than funiculus TAPHBOBTCHUS. 



II. Funiculus of antenna? 5-jointed ; basal joint of club chitinised 

 on nearly its whole posterior surface, covering closely the 

 remaining softer joints. 



This section contains Xylocleptes, Tomicus and Dryoc&tes, the latter being cha- 

 racterized as follows : Club of antennae chitinised on anterior side at base, softer 

 towards apex, with indistinct cross-sutures. Body cylindrical. Thorax nearly uni- 

 formly granulated or rugose. Elytra behind without depression or spines. 



III. Fuuiculus of antenuao 4-5-jointed; the last (oth) joint 

 more or less rudimentary, generally closely united with the 

 club, which is unjointed on both sides. Body long, cylin- 

 drical. Thorax anteriorly granulated, posteriorly punctured. 



Elytra behind without depression or spines LYJIASTOB. 



In the detailed description it is further stated that the thorax has no 

 elevated border at base ; the prosternum has a prolongation between the 

 anterior coxae ; the tibiae are broad towards apex, obliquely truncate, 

 toothed on outer side, ending on the inner side in a thorn-like prolonga- 

 tion ; and the anterior tarsi fold up into a groove in the tibiae ; it will 

 be seen that with the exception of the rudimentary fifth joint of the 

 funiculus and the absence of sutures in the club (a character often in- 

 distinct in Dryoctftes) and the fact that the thorax is apparently more 

 granulated anteriorily, which is certainly not an important point, the 

 genus agrees entirely with Dryocoetes and can hardly be reasonably 

 separated from it on the characters given by Lowendal. 



HYPOTHENEMUS, Westwood (Stephanoderes, Eichhoff). 



This genus was formed by Professor "Westwood for the reception of a 

 very small insect which he found in some numbers in the binding of an 

 old book ; the locality is therefore uncertain and the species is perhaps 

 identical with the Bostrichus nificollis of Fabricius (Syst. El. ii. p. 388) 

 which is described as from South America ; it has also been identified 

 with Stephanoderes arecc*.e, Horn, by Eichhoff, and with/. (Cryphalus) 

 asperlcoUis, Woll.* by Sharp; the genus may be known, apart from the 



* The former of these species has occurred in Columbia and New Guinea ; I do not 

 know the locality of the latter insect. 



